Precision Rolling Bearings

R Pecision Rolling Beaings CAT. No. 226-^/E

C O N T E N T S Technical Data NTN PRECISION ROLLING BEARINGS Main Spindle Beaings Ball Scew Suppot Beaings NTN PRODUCTS APPENDIX

1. Classification of Pecision Rolling Beaings fo Machine Tools 2 2. Beaing Selection and Shaft & Housing Design 5 3. Load Rating and Life 16 4. Allowable Speed 21 5. Beaing Aangements and Stuctues of Beaings fo Main Spindles 22 6. Handling of Beaings 27 7. Lubication of Beaings 39 8. New Technologies 48 9. Angula Contact Ball Beaings fo Radial Loads 55 1. Cylindical Rolle Beaing 29 11. Angula Contact Ball Beaings fo Axial Loads 241 12. Tapeed Rolle Beaings 267 13. Ball Scew Suppot Beaings 275 14. NTN Poducts Cam followes fo pallet change 3 15. Appendix 34

Waanty NTN waants, to the oiginal puchase only, that the deliveed poduct which is the subject of this sale (a) will confom to dawings and specifications mutually established in witing as applicable to the contact, and (b) be fee fom defects in mateial o fabication. The duation of this waanty is one yea fom date of delivey. If the buye discoves within this peiod a failue of the poduct to confom to dawings o specifications, o a defect in mateial o fabication, it must pomptly notify NTN in witing. In no event shall such notification be eceived by NTN late than 13 months fom the date of delivey. Within a easonable time afte such notification, NTN will, at its option, (a) coect any failue of the poduct to confom to dawings, specifications o any defect in mateial o wokmanship, with eithe eplacement o epai of the poduct, o (b) efund, in pat o in whole, the puchase pice. Such eplacement and epai, excluding chages fo labo, is at NTN's expense. All waanty sevice will be pefomed at sevice centes designated by NTN. These emedies ae the puchase's exclusive emedies fo beach of waanty. NTN does not waant (a) any poduct, components o pats not manufactued by NTN, (b) defects caused by failue to povide a suitable installation envionment fo the poduct, (c) damage caused by use of the poduct fo puposes othe than those fo which it was designed, (d) damage caused by disastes such as fie, flood, wind, and lightning, (e) damage caused by unauthoized attachments o modification, (f) damage duing shipment, o (g) any othe abuse o misuse by the puchase. THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. In no case shall NTN be liable fo any special, incidental, o consequential damages based upon beach of waanty, beach of contact, negligence, stict tot, o any othe legal theoy,and in no case shall total liability of NTN exceed the puchase pice of the pat upon which such liability is based. Such damages include, but ae not limited to, loss of pofits, loss of savings o evenue, loss of use of the poduct o any associated equipment, cost of capital, cost of any substitute equipment, facilities o sevices, downtime, the claims of thid paties including customes, and injuy to popety. Some states do not allow limits on waanties, o on emedies fo beach in cetain tansactions. In such states, the limits in this paagaph and in paagaph (2) shall apply to the extent allowable unde case law and statutes in such states. Any action fo beach of waanty o any othe legal theoy must be commenced within 15 months following delivey of the goods. Unless modified in a witing signed by both paties, this ageement is undestood to be the complete and exclusive ageement between the paties, supeceding all pio ageements, oal o witten, and all othe communications between the paties elating to the subject matte of this ageement. No employee of NTN o any othe paty is authoized to make any waanty in addition to those made in this ageement. This ageement allocates the isks of poduct failue between NTN and the puchase. This allocation is ecognized by both paties and is eflected in the pice of the goods. The puchase acknowledges that it has ead this ageement, undestands it, and is bound by its tems. NTN Copoation. 215 Although cae has been taken to assue the accuacy of the data compiled in this catalog, NTN does not assume any liability to any company o peson fo eos o omissions.

Pecision Rolling Beaings Page TECHNICAL DATA CONTENTS 1. Classification of Pecision Rolling Beaings fo Machine Tools 2 4 q Main spindle beaings 2 w Ball scew suppot beaings 4 2. Beaing Selection and Shaft & Housing Design 5 15 q Beaing selection 5 w Beaing accuacy 7 e Beaings and igidity 11 Designing beaing and housing 14 3. Load Rating and Life 16 21 q Beaing life 16 w Static load ating and allowable axial load 2 4. Allowable Speed 21 5. Beaing Aangements and Stuctues of Beaings fo Main Spindles 22 26 q Beaing aangement fo main spindles 22 w Beaing selection based on beaing aangement fo main spindle 24 e Adjustable peload beaing unit 25 Beaing jacket cooling system 26 6. Handling of Beaings 27 38 q Cleaning and filling with gease 27 w Mounting 28 e Tightening of inne ing 3 Elastic defomation of space esulting fom tightening foce 31 t Font cove dive-up 31 y Checking axial igidity 32 u Cleaance adjustment fo cylindical olle beaing 33 i Cylindical olle beaing tapeed boe and main spindle tape angle 37 o Running-in opeation fo main spindle beaing 38 7. Lubication of Beaings 39 47 q Gease lubication 4 w Ai-oil lubication 41 e Jet lubication 47 8. New Technologies 48 53 q The new seies of supe-high-speed pecision beaings fo machine tool main spindles "ULTAGE Seies" 48 w New mateial and new suface modification technology 48 e Envionmentally conscious technology 5 1

Technical Data 1. Classification of Pecision Rolling Beaings fo Machine Tools 1 Main spindle beaings Table.1 Types of pecision olling beaings fo machine tools Beaing type Angula contact ball beaing Double-ow cylindical olle beaing Standad High-speed Supe high-speed HSE with Lubication hole Eco-fiendly High-speed Standad Coss section Non-contact sealed type Non-contact sealed type Beaing type Beaing boe mm Contact angle Remaks Page 78C 79 (U), 5S-79 (U) 7 (U), 5S-7 (U) 72C 2LA-HSE9U 5S-2LA-HSE9 2LA-HSE 5S-2LA-HSE 5S-2LA-HSF 5S-2LA-HSL9U 5S-2LA-HSL 5S-2LA-HSFL 5S-2LA-HSEW9U 5S-2LA-HSEW 79 LLB 5S-79 LLB 7 LLB 5S-7 LLB 2LA-BNS9 LLB 5S-2LA-BNS9 LLB 2LA-BNS LLB 5S-2LA-BNS LLB BNT9 5S-BNT9 BNT 5S-BNT BNT2 5S-BNT2 NN49 (K) NN3 (K) NN3HS (K) NN3HST6 (K) NN3HSRT6 (K) NNU49 (K) 117 12 113 517 51 517 51 51 15 451 165 17 18 132 256 1446 6513 15 15 15, 25, 3 15, 25, 3 15 15, 2, 25 25 2, 25 2517 25 2, 25 15, 25 15, 2, 25 15 A beaing type code containing a suffix U means an ULTAGE seies beaing. Optimized inteio stuctue and esin cage help positively inhibit tempeatue ise (applicable to 79 and 7 types with boe diamete of 1 to 13 mm). Beaings with pefix 5S have ceamic balls. ULTAGE seies Use of special mateial and intoduction of suface modification contibute to much impoved wea esistance and anti-seizue popety. Optimized specifications fo the inteio stuctue lead to highe speed, igidity and eliability. Beaings with pefix 5S have ceamic balls. ULTAGE seies Maintaining the advantages of HSE type, this type has small diamete ceamic balls to achieve highe speed and limited heat buildup. Beaings with pefix 5S have ceamic balls. ULTAGE seies These beaings ae identical to the HSE and HSF types except in that they ae ai-oil lubication designs that have an eco-fiendly nozzle. Featuing lowe noise, educed ai and oil consumption, they positively impove opeating envionments and educe enegy consumption. Beaings with pefix 5S have ceamic balls. ULTAGE seies High speed angula contact ball beaings with lubication hole on oute ing, designed especially fo ai-oil lubication based on HSE type. These beaings have an effect on compact design and high igidity of spindle. Ai flow ate and oil consumption can be educed. Beaings with pefix 5S have ceamic balls. ULTAGE seies Featuing a two-side non-contact seal design and a special gease, these beaings ae a dedicated gease lubicated type that has achieved limited heat buildup though optimization of the inteio stuctue. Beaings with pefix 5S have ceamic balls. ULTAGE seies Maintaining the advantages of HSE type, this dedicated gease lubicated type has an impoved inteio design (gease esevoi, both -side non-contact seal and special gease) to extend gease life. Beaings with pefix 5S have ceamic balls. Angula contact ball beaing seies fo ginding machines/motos. All vaiants ae flush gound. Beaings with pefix 5S have ceamic balls. The beaing cleaance can be eithe intechangeable adial cleaance o non-intechangeable adial cleaance. A vaiant (K) is available with a tapeed boe to accommodate a tapeed shaft. 84 111112 135136 137138 147156 155172 171148 195196 27224 229 2

Technical Data Beaing type Coss section Beaing type Beaing boe mm Contact angle Remaks Page Standad N1HS (K) 316 The bounday dimensions of the N1HS(K) high-speed single-ow cylindical olle beaing ae the same as those of the N1(K). Only the beaing cleaance is non-intechangeable. A ceamic-olle-type (5S-N1) is available on equest. 23 233 Single-ow cylindical olle beaing High-speed Eco-fiendly N1HSR (K) N1HSL (K) 551 551 ULTAGE seies Optimized intenal design allows highe speed and esults in lowe tempeatue ise. The cage is made of a special esin to cope with a high-speed opeation. The allowable maximum speed is highe than that of the conventional high-speed cylindical olle beaing N1HS(K). ULTAGE seies This is a dedicated ai-oil lubicated type identical to the N1HSR(K) type except in that it incopoates an eco-fiendly nozzle. Still maintaining the high-speed pefomance of the N1HSR(K) type, this type boasts lowe noise, educed ai and oil consumption, and positively impoves opeating envionments and educes enegy consumption. 234 235 236 237 Plug gage Ring gage Tape gage Plug gage TA Ring gage TB 316 316 Tape gage fo N1-HS(K) single-ow cylindical olle beaing and NN3(K) double-ow cylindical olle beaing. 238 SB 3516 Cleaance gage fo N1-HSK(K), N1-HSR(K) single-ow cylindical olle beaing and NN3(K), NN3HS(K) double-ow cylindicalolle beaing. 239 Cleaance adjustment gauge Adjustable peload beaing unit Adjustable peload beaing unit Fixed position adjustable peload beaing unit. Incopoation of an adjustable peload sleeve and a duplex angula ball beaing allows the use to adjust the peload of an angula ball beaing in a wide ange fom a light peload to a heavy peload. Fixed position peload leads to a geate igidity. Double-diection angula contact thust ball beaing 5629 (M) 562 (M) Small-size 132 Lage-size (M) 1433 Small-size 2532 Lage-size (M) 2733 6 The small beaing is used on a cylinde boe o smalle-diamete side of a tapeed boe of the NNU49, NN49 o NN3 double-ow cylindical olle beaing; the lage beaing (suffix M) is used on the lage hole side of a tapeed boe. 25 253 Angula contact ball beaing fo axial load HTA9U HTAU 5S-HTAU 132 2532 2513 3, 4 HTA9DB seies beaings ae fully compatible with 5629 seies beaings. HTADB seies beaings ae fully compatible with 562 seies beaings. 254 265 Tapeed olle beaings 329 32 519 217 Nominal contact angle of 1 o geate, 17 o smalle Thin-wall type, ISO-compatible metic seies. 27 273 3

Technical Data 2 Ball scew suppot beaings Beaing type Beaing type Beaing boe mm Contact angle Remaks Page Angula contact thust ball beaing fo ball scews BST 2A-BST Open type BST LXL/L588 2A-BST LXL/L588 Light-contact sealed type 1755 6 Coss section ULTAGE seies Suface modification teatment on the beaing ing aceways has led to a longe beaing life and much impoved fetting esistance. 288 Owing to pelubication with a special gease, the sealed type boasts a longe beaing life and simple maintenance wok. All vaiants ae flush-gound and ae povided with a standad peload. 293294 HT 64 3 The allowable axial load of this beaing type is geate owing to the impoved inteio design. Angula contact ball beaing fo ball scews Needle olle beaings with double-diection thust needle olle beaing Cylindical olle beaings with double-diection thust needle olle beaing AXN ARN 25 27 A cleaance emains between the inne ing of adial beaing and the inne ings of both thust beaings, allowing the use to detemine the peload by, fo example, tightening a nut etc. The tageted peload is attained based on the stating toque. The beaing cleaance on cetain peloaded beaings is contolled in advance so that an intended peload is attained by fully tightening the inne ings on both thust beaing with nuts, o equivalent means. 295296 297298 299 4

Technical Data 2. Beaing Selection and Shaft & Housing Design 1 Beaing selection Geneally, the optimal beaing must be selected to suit the natue of the machine, the aea within the machine, the spindle specification, beaing type, lubication system and dive system of the intended machine though consideations of the design life, pecision, igidity and citical speed, etc. of the beaing. Table 2.1 summaizes a typical beaing selection pocedue, and Table 2.2 gives an example flowchat accoding to which consideations ae made to select an optimal main spindle beaing fo a machine tool. Table 2.1 Beaing selection pocedue Step Items being consideed Items being confimed Confim opeating conditions of beaing and conside beaing type. Function and constuction of components to house beaings Beaing mounting location Dimensional limitations Magnitude and diection of beaing load Magnitude of vibation and shock load Shaft speed Beaing aangement (fixed side, floating side) Noise and toque of the beaing Beaing opeating tempeatue ange Beaing igidity Installation / disassembly equiements Maintenance and inspection Cost-effectiveness Allowable misalignment of inne/oute ings Detemine beaing type and aangement. Select beaing dimensions. Design life of components to house beaings Dynamic/static equivalent load conditions Safety facto So Allowable speed Allowable axial load Detemine beaing dimensions. Select beaing toleances. Shaft unout toleances Toque fluctuation High-speed opeation Decide beaing gade. Select beaing intenal cleaance. Mateial and shape of shaft and housing Fit Tempeatue diffeence between inne and oute ings Allowable misalignment of inne/oute ings Magnitude and natue of load Amount of peload Decide beaing intenal cleaance. Select cage. Rotational speed Noise level Vibation and shock load Lubication Cage type Select lubication method. Opeating tempeatue Rotational speed Lubication method Sealing method Maintenance and inspection Decide lubication method, lubicant, and sealing method. Conside special specifications. Opeating conditions (special envionments: high o low tempeatue, chemical) Requiement fo high eliability Decide special beaing specifications. Select installation and disassembly pocedues. Mounting dimensions Installation and disassembly pocedues Decide installation and disassembly pocedues. 5

Technical Data Table 2.2 Beaing selection pocedue Use s equiements Max. speed Main spindle size Lubication system Beaing size. Consideation of allowable dmn value. Consideation of fit. Consideation of tightening foce fo inne ing space. Consideation of dive-up of font cove. Estimation of beaing intenal peload at maximum speed and consideation of beaing initial cleaance accoding to NTN s beaing selection guideline. Finalization of beaing specifications. NG Consideation of igidity of beaing and main spindle. Consideation of beaing life. OK Finalization of main spindle specifications The aticles necessay fo basic consideations in selecting an optimal main spindle beaing fo machine tool ae summaized in Table 2.3. Table 2.3 Selection pocedue fo beaings fo main spindles of machine tools (1) Type of Machine (2) Main spindle oientation (3) Diamete and size of main spindle NC Lathe, machining cente, ginding machine, etc. Vetical, hoizontal, vaiable-diection, inclined, etc. #3, #4, #5, etc. F d1 d2 d3 d4 Beaing type/beaing numbe Rota (Weight m) F 1 Pulley d7 (4) Shape and mounting-elated dimensions of main spindle Fa Fm Main spindle inne diamete d5-1 Main spindle oute diamete d5 Main spindle inne diamete d6-1 Main spindle oute diamete d6 Fig. 2.1 Main spindle shape and mounting-elated dimensions (example) (5) Intended beaing type, beaing size, and peloading method (6) Slide system fee side (7) Lubication method (8) Dive system Pesence/absence of jacket cooling (9) aangement on beaing aea (1) Jacket cooling conditions Font (angula contact type, cylindical olle type) o ea (angula contact type, cylindical olle type) peloading system (fixed-position peloading, fixed-pessue peloading) Cylindical olle beaing, ball bushing (availability of cooling) Gease, ai-oil, oil mist (MiconLub) Built-in moto, belt dive, coupling Yes/No Synchonization with oom tempeatue, machine-to-machine synchonization, oil feed ate (L/min) Max. speed (min -1 ) (11) Opeating speed ange Nomal speed ange (min -1 ) Opeating speed ange (min -1 ) Load cente Applied load Radial load F (N) Axial load Fa (N) (12) Load conditions (machining conditions) Speed Machining fequency Intended beaing life 6

Technical Data 2 Beaing accuacy Beaing accuacy Accuacies of olling beaings, that is, dimensional accuacy and unning accuacy of olling beaings ae defined by applicable ISO standads and JIS B 1514 standad (Rolling beaings - Toleances) (Tables 2.4 and 2.5). The dimensional accuacy govens the toleances that must be satisfied when mounting a beaing to a shaft o housing, while the unning accuacy defines a pemissible un-out occuing when otating a beaing by one evolution. Methods fo measuing the accuacy of olling beaings (optional methods) ae descibed in JIS B 1515 (Measuing methods fo olling beaings). Table 2.6 summaizes some typical methods fo measuing unning accuacy of olling beaings. Table 2.4 Beaing types and applicable toleance Beaing type Applicable standad Toleance class Angula contact ball beaings Cylindical olle beaigns Needle olle beaings JIS B 1514 ISO492 Class Class Class Class 6 class 6 class 6 Class 5 Class 4 Class 5 Class 4 Class 5 Class 4 Class 2 Class 2 Tapeed olle beaings Metic Inch J seies JIS B 1514 ANSI/ABMA Std.19 ANSI/ABMA Std.19.1 Class,6X Class 4 Class K class 6 Class 2 Class N Class 5 Class 3 Class C Class 4 Class Class B Class Class A Double ow angula contact thust ball beaings NTN standad Class 5 Class 4 Table 2.5. Compaison of toleance classifications of national standads Standad Japanese industial standad (JIS) Intenational Oganization fo Standadization (ISO) Deutsches Institut fu Nomung(DIN) Applicable standed JIS B 1514 ISO 492 ISO 199 ISO 578 ISO 1224 DIN 62 Ameican National Standads Institute (ANSI) ANSI/ABMA Std.2 Ameican Beaing Manufactue's Association ANSI/ABMA Std.19.1 (ABMA) ANSI/ABMA Std.19 Toleance Class Class,6X Class 6 Class 5 Class 4 Class 2 Nomal class Class 6X Class 6 Class 5 Class 4 Class 2 Nomal Class Class 6 Class 5 Class 4 Class 4 Class 3 Class Class Class 5A Class 4A P P6 P5 P4 P2 ABEC-1 RBEC-1 Class K Class 4 ABEC-3 RBEC-3 Class N Class 2 ABEC-5 RBEC-5 ABEC-7 ABEC-9 Class C Class B Class A Class 3 Class Class 1 "ABEC" is applied fo ball beaings and "RBEC" fo olle beaings. Notes 1: JIS B 1514, ISO 492 and 199, and DIN 62 have the same specification level. 2: The toleance and allowance of JIS B 1514 ae slightly diffeent fom those of ABMA standads. 1 All type Radial beaings Thust ball beaings Beaing Types Tapeed olle beaings (Inch seies) Pecision instument beaings All type Radial beaings (Except tapeed olle beaings) Tapeed olle beaings (Metic seies) Tapeed olle beaings (Inch seies) 7

Technical Data To attain a highe level of unning accuacy equied of a main spindle of machine tool, a high-pecision beaing that satisfies the use's main spindle specifications must be chosen. Usually, a highpecision beaing pe JIS accuacy class 5, 4 o 2 is selected accoding to an intended application. In paticula, the adial un-out, axial un-out and nonepetitive un-out of a main spindle beaing geatly affect the unning accuacy of the main spindle and theefoe have to be stictly contolled. With the ecent supe high-pecision machine tools, the contol of N.R.R.O. (Non-Repetitive Run-Out) has inceasing impotance, and the main spindle on a tuning machine o machining cente incopoates an N.R.R.O. accuacy contolled beaing. Fo futhe infomation about N.R.R.O., efe to the following section. Note that to attain a highe accuacy with a main spindle, caeful consideations need to be execised fo the accuacies (ciculaity, cylindicity, coaxiality) of machine components othe than a beaing (shaft, housing) as well as machining method and finish accuacy of the shaft and housing. Fo the infomation about the accuacies of shaft and housing, efe to a section given late. Table 2.6 Measuing methods fo unning accuacies Chaacteistic toleance Measuement method Inne ing adial unout (Kia) Measuing load Measuing load Radial unout of the inne ing is the diffeence between the maximum and minimum eading of the measuing device when the inne ing is tuned one evolution. Oute ing adial unout (Kea) Measuing load Measuing load Radial unout of the oute ing is the diffeence between the maximum and minimum eading of the measuing device when the oute ing is tuned one evolution. Inne ing axial unout (Sia) Measuing load Measuing load Axial unout of the inne ing is the diffeence between the maximum and minimum eading of the measuing device when the inne ing is tuned one evolution. Oute ing axial unout (Sea) Measuing load Measuing load Axial unout of the oute ing is the diffeence between the maximum and minimum eading of the measuing device when the oute ing is tuned one evolution. Inne ing side unout with boe (Sd) Inne ing side unout with boe is the diffeence between the maximum and minimum eading of the measuing device when the inne ing is tuned one evolution togethe with the tapeed mandel. Oute ing outside suface inclination (SD) 1.2s max 1.2s max Reinfocing plate Oute ing outside suface inclination is the diffeence between the maximum and minimum eading of the measuing device when the outside ing is tuned one evolution along the einfocing plate. 8

Technical Data N.R.R.O. (Non-Repetitive Run-Out) of beaing Accuacies of olling beaings ae defined by applicable ISO standads and a JIS (Japanese Industial Standad) standad, wheein the accuacies ae discussed unde the desciptions of adial un-out (Kia), axial un-out (Sia), etc. Accoding to the methods fo measuing unning accuacies in Table 2.6, un-out is ead by tuning a beaing by only one evolution (each eading is synchonized with the evolution of the beaing being analyzed). In fact, howeve, a olling beaing fo machine tool is used in a continuous evolving motion that involves moe than one evolution. As a esult, the actual un-out accuacy with a olling beaing includes elements that ae not synchonous with the evolution of the beaing (fo example, a diffeence in diamete among olling elements involved, as well as oundness on the aceway sufaces of inne ing and oute ing), causing the tajectoy of plotting with unning accuacies to vay with each evolution. The un-out of an element not in synchonization with the evolutions of beaing is known as N.R.R.O. (Non- Repetitive Run-Out) and is equivalent to the amplitude in the Lissajous figue illustated in Fig. 2.3. The effect of N.R.R.O. on a olling beaing onto the accuacies is illustated in Fig. 2.4 by taking a main spindle of tuning machine as an example. This diagam illustates a machining pocess whee the outside suface of a wok piece mounted to the main spindle is shaved by a tuning opeation. If the outside suface is cut with a new tajectoy with evey evolution, the outside shape of wok piece will be distoted. Futhemoe, if the accuacies of shaft and housing ae not high enough o beaings ae assembled onto the shaft and/o housing impopely, the beaing ing can be defomed, possibly leading to a un-out that is not in synchonization with the evolutions of beaing. 1st evolution 2nd evolution 3d evolution Revolution-synchonized vibation only Fig. 2.2 Non-evolution-synchonized vibation only Cutting tool Distotion of wok piece shape Fig. 2.4 Model of cutting opeation Non-epetitive un-out Fig. 2.3 Lissajous figue 9

Technical Data Accuacies of shaft and housing Depending on the fit of a beaing to a shaft and a housing, the beaing intenal cleaance can vay. Fo this eason, an adequate beaing fit has to be attained so that the beaing can pefom as designed. (Refe to the ecommended fit section.) Also, the axial tightening toque on a beaing needs to be consideed. To avoid defomation of beaing aceway suface owing to axial tightening of the beaing, it is necessay to caefully detemine the dimensions of components associated with a tightening foce the magnitude of tightening foce and the numbe of tightening bolts. The cleaance on a tapeed boe cylindical olle beaing is adjusted by changing the dive-up to the tape. Because of this, the citical factos associated with an appopiate fit of a beaing to a shaft and/o a housing ae the dimensional accuacies of the tape, contact suface on the tape, and the squaeness of the end face of the inne ing elative to the shaft centeline duing the dive-up pocess. Typical accuacy values fo a spindle and housing ae summaized in Tables 2.7 and 2.8. Typical accuacy fo spindle Typical accuacy fo housing Table 2.8 Fom accuacy of housing 1 t3 t t1 AB AB A Da AB 2 A Fundamental pemissible toleance IT Accuacy Symbol Toleance3 P5 P4 P2 Deviation fom cicula fom Angulaity Run out t t1 t3 IT3 2 IT3 2 IT3 B Db IT2 2 IT2 2 IT3 t3 t t1 t4 AB IT1 2 IT1 2 IT2 Table 2.7 Fom accuacy of spindle 1 A da t3 t t1 AB B AB t2 AB t db t4 2 A Eccent icity t4 1 The fom toleance, symbol and efeence face of the housing ae in accodance with ISO R111. 2 The length of the beaing fit suface is often too small to measue concenticity. Theefoe, this citeion applies only when the fit suface has a width sufficient as a efeence face. 3 Housing boe diametes Da and Db ae the efeence dimensions used when the toleance fo pemissible fom accuacy ae detemined. Fo example, when a JIS class 5 beaing is used fo a housing with a 5 mm inside boe, the toleance of oundness is t = IT3/2 = 5/2 = 2.5m. IT5 IT4 IT3 Accuacy Deviation fom cicula fom Angulaity Run out Eccent icity Symbol Toleance 3 Fundamental pemissible toleance IT P5 P4 P2 t t1 t2 t3 t4 1 The fom toleance, symbol, and efeence face of spindle ae in accodance with ISO R111. 2 The length of the beaing fit suface is often too small to measue concenticity. Theefoe, this citeion applies only when the fit suface has a width sufficient as a efeence face. 3 When detemining a toleance fo pemissible fom accuacy, the efeence dimensions used ae shaft diametes da and db. Fo example, when using a JIS class 5 beaing fo a dia. 5 mm shaft, the toleance of oundness is t = IT3/2 = 4/2=2 m. 4 IT is pefeed if the diamete toleance of the beaing fit suface is IT3. IT3 2 IT3 2 IT3 IT5 IT2 2 IT2 2 IT3 2 IT3 IT4 IT 2 IT 2 IT2 2 IT2 IT3 4 4 Fundamental toleance IT Table 2.9 Fundamental toleance IT Classification of nominal dimension mm ove 6 1 18 3 5 8 12 18 25 315 4 incl. 1 18 3 5 8 12 18 25 315 4 5 Fundamental toleance IT value m IT IT1 IT2 IT3 IT4.6.8 1 1 1.2 1.5 2 3 4 5 6 1 1.2 1.5 1.5 2 2.5 3.5 4.5 6 7 8 1.5 2 2.5 2.5 3 4 5 7 8 9 1 2.5 3 4 4 5 6 8 1 12 13 15 4 5 6 7 8 1 12 14 16 18 2 1

Technical Data 3 Beaings and igidity The igidity of the main spindle of a machine tool is associated with both beaing igidity and shaft igidity. Beaing igidity is typically govened by the elastic defomation between the olling elements and aceway suface unde load. Usually, beaings ae peloaded in ode to incease the igidity. Unde same loading conditions, a olle beaing has a highe igidity than a ball beaing of the same size. Howeve, having sliding potions, a olle beaing is disadvantageous in suppoting a high-speed shaft. Shaft igidity is geate with a lage shaft diamete. Howeve, the suppoting beaing must have a sufficient size and its dmn value (pitch cente diamete acoss olling elements dm [mm] multiplied by speed [min -1 ]) must be accodingly geate. Of couse, a lage beaing is disadvantageous fo high-speed applications. To sum up, the igidity equied of the shaft aangement must be consideed befoe the beaing igidity (beaing type and peload) and shaft igidity ae detemined. Beaings igidity The igidity of a beaing built into a spindle diectly affects the igidity of the spindle. In paticula, a high degee of igidity is equied of the main spindle of a machine tool to ensue adequate poductivity and accuate finish of wokpieces. Beaing igidity is govened by factos such as the following: (1) Types of olling elements (2) Size and quantity of olling elements (3) Mateial of olling elements (4) Beaing contact angle (5) Peload on beaing Type of olling elements (olle o ball) The suface contact patten of the olling element and aceway is line contact with a olle beaing, while a ball beaing is point contact. As a esult, the dynamic defomation of a beaing elative to a given load is smalle with a olle beaing. Size and numbe of olling elements The size and numbe of olling elements of a beaing ae detemined based on the tageted pefomance of the beaing. Lage olling elements lead to a geate beaing igidity. Howeve, a beaing having lage olling elements tends to be affected by gyatoy sliding centifugal foce, and, as a esult, its high-speed pefomance will be degaded. Incidentally, a geate numbe of olling elements helps incease beaing igidity, but at the same time ceates an inceased numbe of heat geneation souces, possibly leading to geate tempeatue ise. Fo this eason, smalle size of olling elements ae used fo high-speed applications. To achieve both "high speed" and "high igidity", each type of the NTN angula contact ball beaing fo a machine tool is manufactued accoding to optimized specifications fo inteio stuctue. Axial displacement (m) Axial displacement (m) 2LA-HSE2C 72UC Axial load (N) Fig. 2.5 Mateial of olling element (ceamic and steel) Cetain NTN beaings incopoate ceamic olling elements. As Young's modulus of silicon nitide (315 GPa) is geate than that of beaing steel (21 GPa), the igidity with this type of beaing is accodingly geate. Axial displacement (m) Beaing steel ball Ceamic ball Axial load (N) Fig. 2.6 Beaing contact angle A smalle contact angle on an angula contact ball beaing esults in geate adial igidity. When used as a thust beaing, this type of beaing should have a geate contact angle to enable geate axial igidity. 2LA-HSE2CDB/GL=15 2LA-HSE2DB/GL=2 2LA-HSE2ADDB/GL=25 Axial load (N) Fig. 2.7 11

Technical Data Peload on beaing A geate peload on a given beaing esults in geate igidity (Fig. 2.8). Howeve, too geat of a peload on a beaing can lead to oveheating, seizue, and/o pematue wea of the beaing. It is possible to use beaings in thee- o fou-ow configuations in ode to achieve inceased axial igidity (Fig. 2.9). Axial displacement (µm) 2LA-HSE2DB/GL 2LA-HSE2DB/GN 2LA-HSE2DB/GM Axial load (kn) Fig. 2.8 Peloading technique and peload Beaing peloading techniques can be categoized as definite position peloading and constant pessue peloading (Fig. 2.1). Definite position peloading is useful in enhancing the igidity of a beaing unit, as the positional elationship acoss individual beaings can be maintained. On the othe hand, as peloading is achieved with sping foce, the constant pessue peloading technique can maintain a peload constant even when the beaing-to-beaing distance vaies due to heat geneation on the spindle o a change in load. The basic peload fo a duplex beaing is given in the elevant section fo each beaing. If an angula contact ball beaing is to be used fo a high-speed application, such as fo the main spindle of a machine tool, detemine the optimal peload by consideing the incease in contact suface pessue between olling elements and the aceway suface that esults fom gyatoy sliding and centifugal foce. When consideing such an application, consult NTN Engineeing. Definite position peloading Axial displacement (µm) 2LA-HSE2DB/GL 2LA-HSE2DBT/GL 2LA-HSE2DTBT/GL Axial load (kn) Fig. 2.9 Constant pessue peloading Fig. 2.1 Peload and igidity The effect of peloading fo an incease in beaing igidity is summaized in Fig. 2.11. When the inne ings in the diagam ae tightened to bing them togethe, beaings!and!ae each axially displaced by dimensionδo, theeby attaining a peload Fo. In this situation, if an axial load Fa is futhe exeted fom outside, the displacement on beaing!inceases byδa, while the displacement on beaing!deceases. At this point, the loads on beaings!and!ae F!and F!, espectively. When compaed with δb (the displacement occuing when an axial load Fa is exeted onto a non-peloaded beaing!), displacementδa is small. Thus, a peloaded beaing has highe igidity. Fo Beaing@ Beaing! δo δo Fa Fo (1) Fee fom peloading (2) Unde peloading Fo (3) Unde peloading with axial load applied δo δa F2 δo Oute ing Ball Inne ing δo δa Inne ing axial δo displacement Fo : peload Inne ing axial δa displacement F1=F2Fa Beaing@ Axial load δb Fo δ1 δo δa δo Fa δ2 Beaing! Fa F2 F1 Axial displacement Fig. 2.11 Peload gaph 12

Technical Data Gyatoy sliding Evey olling element M (ball) in an angula contact A ball beaing evolves on the axis of otation A-A' as illustated in Fig. 2.12. A evolving object tends to A' M foce the axis of otation to a vetical o hoizontal attitude. As a esult, the Fig. 2.12 Gyatoy sliding olling element develops a foce to alte the oientation of the axis of otation. This foce is known as a gyatoy moment (M). When the foce due to the gyatoy moment is geate than the esistance foce (olling element load multiplied by the coefficient of fiction between the aceway and olling element), gyatoy sliding occus on the aceway suface. This leads to heat geneation, wea and seizue. Theefoe, it is necessay to povide a sufficient esistance foce to inhibit gyatoy sliding. NTN's ecommended peload is based on this theoy. The gyatoy moment that will occu can be calculated by the fomula below. Mkbcsin 1 2 k mdw 1.45dw 5 M dw 5 n 2 sin M Gyatoy moment bautootation angula velocity of olling element cangula velocity of evolution m Mass of olling element Density of olling element dw Diamete of olling element Angle of axis of otation of olling element n Speed of inne ing Spin sliding Evey olling element (ball) in an angula contact ball beaing develops spin sliding that is unavoidable owing to the stuctue of the beaing, elative to the aceway suface of eithe the inne ing o oute ing (Fig. 2.13). Usually, at a lowe speed Fig. 2.13 Spin sliding ange, pue olling motion occus between an inne ing aceway and olling elements and spin sliding develops between an oute ing aceway and olling elements (this state is known as inne ing contol). At a highe speed ange, pue olling motion occus between an oute ing aceway and olling elements and spin sliding develops between an inne ing aceway and olling elements (this state is known as oute ing contol). A point whee tansfe fom inne ing contol to oute ing contol occus is known as contol tansfe point. An amount of spin sliding and contol tansfe point can vay depending on the beaing type and beaing data. Geneally, the amount of spin sliding will be geate with an oute ing contol state. Accoding to J. H. Rumbage and J. D. Dunfee, when the amount of spin sliding exceeds 4.2 1 6 (N/m m 2 -mm/s), incease of heat geneation and wea stat. Geneally, it is necessay fo a beaing of a highspeed main spindle to have a peload that can pevent spin sliding. The example of wea on a beaing owing to spin sliding is given in Fig. 2.14. The magnitude of spin-deived wea is govened by a PV value (amount of spin sliding) duing opeation of the main spindle. Theefoe, the optimum beaing fo main spindle must be selected. Though the possibility of spin-deived wea occuence vaies depending on the beaing type, model numbe and specifications, we caefully detemined a contol tansfe point in an opeating aangement fo NTN angula contact ball beaings fo main spindles of machine tools. Thus, we believe that the amount of spin sliding with this beaing categoy is not vey lage. Additionally, the magnitude of spin-deived wea is significantly affected by how well the aceway suface is lubicated. Regadless of the type of sliding, even mino sliding can lead to wea if oil film is not fomed well. Fo this eason, a eliable lubication aangement needs to be incopoated. The fom of wea on the beaing aceway deived fom spin sliding appeas as. The wea on the aceway suface on inne ing that esulted fom spin sliding is given below. 2.5m Possible causes fo Rolling contact aea (1) Contact ellipse and diection of spin sliding (3) Beaing pessue within ellipse (P) (5) Wea on aceway suface Beaing: 726T1 Thust load: 2 kn Speed: 5 min -1 Lubication: Gease Run time: 5 h type wea (2) Sliding velocity (V) (4) PV value owing to spin PVmax 2.14 Mechanism of wea on beaing owing to spin sliding 13

Technical Data 14 4 Designing shaft and housing In designing a beaing and housing, it is vey impotant to povide a sufficient shoulde height fo the beaing and housing so as to maintain beaing and housing accuacies and to avoid intefeence with the beaing elated cone adius. The chamfe dimensions ae shown in Table 2.1 and the ecommended shoulde height and cone adii on the shaft and housing ae listed in Table 2.11. Table 2.1 Allowable citical-value of beaing chamfe (1) Radial beaings (Except tapeed olle beaings) (2) Metic tapeed olle beaings Unit mm s min 1 Nominal s maxo1s max s min 2 Nominal boe 3 boe diamete diamete of beaing o d o "d" o nominal Radial Axial outside diamete "D" Radial 1s min ove incl. diection diection 1s min ove incl. diection.5.1.2 4.7.3.8.16.3 4.9.1.2.4 4 1.1.6.15.3.6 4 1.3.2.5.8 5 1.6 1 4.6 1 5 1.9.3 4.8 1 12 2.3 4 1 2 1.5 12 25 2.8.6 4 1.3 2 25 3.5 5 1.5 3 12 2.8 1 5 1.9 3 2 12 25 3.5 12 2 3.5 25 4 1.1 12 2.5 4 12 3.5 12 2.3 4 2.5 12 25 4 1.5 12 3 5 25 4.5 8 3 4.5 12 4 2 8 22 3.5 5 12 25 4.5 3 22 3.8 6 25 4 5 28 4 6.5 4 5.5 2.1 28 4.5 7 12 5 1 3.8 6 12 25 5.5 4 2.5 1 28 4.5 6 25 4 6 28 5 7 4 6.5 28 5 8 18 6.5 3 5 28 5.5 8 18 7.5 4 6.5 9 18 7.5 6 5 8 1 18 9 6 1 13 7.5 12.5 17 9.5 15 19 12 18 24 15 21 3 19 25 38 1 These ae the allowable minimum dimensions of the chamfe dimension "" o "1" and ae descibed in the dimensional table. Beaing cone adius dimensions s max o1s max s min o 1s min Boe diamete face s min o 1s min of beaing o oute diamete face of s max o 1s max beaing (Axial diection) Fig. 2.15 Unit mm Axial diection 1.4 1.6 1.7 2 2.5 3 3 3.5 4 4 4.5 5 5 5.5 6 5.5 6.5 7 7.5 7 7.5 8 8.5 8 9 1 11 2 These ae the allowable minimum dimensions of the chamfe dimension "" o "1" and ae descibed in the dimensional table. 3 Inne ings shall be in accodance with the division of "d" and oute ings with that of "D". Note: This standad will be applied to beaings whose dimensional seies (efe to the dimensional table) ae specified in the standad of ISO 355 o JIS B 1512. Fo futhe infomation concening beaings outside of these standads o tapeed olle beaings using US customay units, please contact NTN Engineeing. Side face of inne ing o cente washe, o side face of oute ing s min o 1s min (3) Thust beaings Unit mm.5.8.1.15.2.3.6 1 1.1 1.5 2 2.1 3 4 5 6 7.5 9.5 12 15 19 s max o 1s max s min o 1 min 4 (Radial diection) s max o1s max Radial and axial diecition.1.16.2.3.5.8 1.5 2.2 2.7 3.5 4 4.5 5.5 6.5 8 1 12.5 15 18 21 25 4 These ae the allowable minimum dimensions of the chamfe dimension "" o "1" and ae descibed in the dimensional table.

Technical Data Abutment height and fillet adius The shaft and housing abutment height (h) should be lage than the beaing's maximum allowable chamfe dimensions (s max), and the abutment should be designed so that it diectly contacts the flat pat of the beaing end face. The fillet adius (a) must be smalle than the beaing's minimum allowable chamfe dimension (s min) so that it does not intefee with beaing seating. Table 2.11 lists abutment height (h) and fillet adius (a). Fo beaings that suppot vey lage axial loads, shaft abutments (h) should be highe than the values in the table. Whee a fillet adius (a max) lage than the beaing chamfe dimension is equied to stengthen the shaft o to elieve stess concentation (Fig. 2.16a), o whee the shaft abutment height is too low to affod adequate contact suface with the beaing (Fig. 2.16b), spaces may be used effectively. Relief dimensions fo gound shaft and housing fitting sufaces ae given in Table 2.12. h h Fig. 2.16 Beaing mounting with space Table 2.11 Fillet adius and abutment height Unit mm h (min).5.8.1.15.2.3.6 1 1.1 1.5 2 2.1 2.5 3 4 5 6 7.5 9.5 12 15 19.5.8.1.15.2.3.6 1 1 1.5 2 2 2 2.5 3 4 5 6 8 1 12 15 Nomal use 1.3.3.4.6.8 1.25 2.25 2.75 3.5 4.25 5 6 6 7 9 11 14 18 22 27 32 42 1 If beaing suppots lage axial load, the height of the shoulde must exceed the value given hee. Note: as max maximum allowable fillet adius. 2.12 Relief dimensions fo gounding 1 1.1 1.5 2 2.1 2.5 3 4 5 6 7.5 t t Relief dimensions b t 2 2.4 3.2 4 4 4 4.7 5.9 7.4 8.6 1 b b.2.3.4.5.5.5.5.5.6.6.6 1.3 1.5 2 2.5 2.5 2.5 3 4 5 6 7 15

Technical Data 3. Load Rating and Life 1 Beaing life Even in beaings opeating unde nomal conditions, the sufaces of the aceway and olling elements ae constantly being subjected to epeated compessive stesses which causes flaking of these sufaces to occu. This flaking is due to mateial fatigue and will eventually cause the beaings to fail. The effective life of a beaing is usually defined in tems of the total numbe of evolutions a beaing can undego befoe flaking of eithe the aceway suface o the olling element sufaces occus. Othe causes of beaing failue ae often attibuted to poblems such as seizue, abasions, cacking, chipping, scuffing, ust, etc. Howeve, these so called "causes" of beaing failue ae usually caused by impope installation, insufficient o impope lubication, faulty sealing o impope beaing selection. Since the above mentioned "causes" of beaing failue can be avoided by taking the pope pecautions, and ae not simply caused by mateial fatigue, they ae consideed sepaately fom the flaking aspect. Usually, the load exeted on the main spindle of a machine tool is elatively small compaed to the dynamic ated load on the beaing. Theefoe, the fatigue life of a beaing seldom poses a poblem. The following opeating conditions, athe than a beaing's ating life, can significantly affect the beaing functions (unning accuacy, igidity, heat geneation, etc.) and equie special consideation. (1) High speed opeation. (2) Heavy peload. (3) Lage bending of the shaft. (4) Lage tempeatue diffeence between the inne and oute ings. Fo futhe infomation, please consult NTN Engineeing. Basic ating life and basic dynamic load ating A goup of seemingly identical beaings when subjected to identical load and opeating conditions will exhibit a wide divesity in thei duability. This "life" dispaity can be accounted fo by the diffeence in the fatigue of the beaing mateial itself. This dispaity is consideed statistically when calculating beaing life, and the basic ating life is defined as follows. The basic ating life is based on a 9% statistical model which is expessed as the total numbe of evolutions 9% of the beaings in an identical goup of beaings subjected to identical opeating conditions will attain o supass befoe flaking due to mateial fatigue occus. Fo beaings opeating at fixed constant speeds, the basic ating life (9% eliability) is expessed in the total numbe of hous of opeation. Basic dynamic load ating expesses a olling beaing's capacity to suppot a dynamic load. The basic dynamic load ating is the load unde which the basic ating life of the beaing is 1 million evolutions. This is expessed as pue adial load fo adial beaings and pue axial load fo thust beaings. These ae efeed to as "basic dynamic load ating (C)" and "basic dynamic axial load ating (Ca)." The basic dynamic load atings given in the beaing tables of this catalog ae fo beaings constucted of NTN standad beaing mateials, using standad manufactuing techniques. The elationship between the basic ating life, the basic dynamic load ating and the beaing load is given in the fomula below. Fo ball beaings: L1 =( C ) 3 (3.1) P L1h = 16 ( C ) 3 (3.2) 6n P Fo olle beaings: L1 =( C ) 1/3 (3.3) P L1h = 16 ( C ) 1/3 (3.4) 6n P whee, L1 : Basic ating life, 1 6 evolutions L1h : Basic ating life, h C : Basic dynamic load ating, N {kgf} (C: adial beaings, Ca: thust beaings) P : Equivalent dynamic load, N {kgf} (P: adial beaings, Pa: thust beaings) n : Rotational speed, min -1 When seveal beaings ae incopoated in machines o equipment as complete units, all the beaings in the unit ae consideed as a whole when computing beaing life (see fomula 3.5). 1 L=( 1 + 1 + 1 (3.5) ) 1/e L 1 e L 2 e whee, L : Total basic ating life of entie unit, h L1, L2 Ln: Basic ating life of individual beaings, 1, 2, n, h e = 1/9...Fo ball beaings e = 9/8...Fo olle beaings When the load conditions vay at egula intevals, the life can be given by fomula (3.6). L n e Lm =( Φ1 + Φ2 + Φ j ) -1 (3.6) L1 L2 L j 16

Technical Data whee, L m : Total life of beaing Φ j : Fequency of individual load conditions (ΣΦ j = 1) L j : Life unde individual conditions Adjusted ating life The basic beaing ating life (9% eliability facto) can be calculated by the fomula (3.2) mentioned. Howeve, in some applications a beaing life facto of ove 9% eliability may be equied. To meet these equiements, beaing life can be lengthened by the use of specially impoved beaing mateials o manufactuing pocess. Beaing life is also sometimes affected by opeating conditions such as lubication, tempeatue and otational speed. Basic ating life adjusted to compensate fo this is called "adjusted ating life," and is detemined by using the fomula (3.7). Lna = a1 a2 a3 L1 (3.7) whee, Lna : Adjusted ating life in millions of evolutions (1 6 ) a1 : Reliability facto a2 : Beaing chaacteistics facto a3 : Opeating conditions facto Life adjustment facto fo eliability a1 The value of eliability facto a1 is povided in Table 3.1 fo eliability of 9% o geate. Table 3.1 Reliability facto a1 Reliability % 9 95 96 97 98 99 L L L L L L L Reliability facto a1 1..62.53.44.33.21 Life adjustment facto fo mateial a2 Beaing chaacteistics concening life vay accoding to beaing mateial, quality of mateial and use of special manufactuing pocesses. In this case, life is adjusted by the beaing chaacteistics facto a2. The basic dynamic load atings listed in the catalog ae based on NTN's standad mateial and pocess, theefoe, the adjustment facto a2 =1. a2>1 may be used fo specially enhanced mateials and manufactuing methods. If this applies, consult NTN Engineeing. Life adjustment facto fo opeating conditions a3 Opeating conditions facto a3 is used to compensate fo when the lubication condition wosens due to ise in tempeatue o otational speed, lubicant deteioates, o becomes contaminated with foeign mattes. Geneally speaking, when lubicating conditions ae satisfactoy, the a3 facto has a value of one. And when lubicating conditions ae exceptionally favoable and all othe opeating conditions ae nomal, a3 can have a value geate than one. a3 is howeve less than 1 in the following cases: Dynamic viscosity of lubicating oil is too low fo beaing opeating tempeatue (13 mm 2 /s o less fo ball beaings, 2 mm 2 /s fo olle beaings) Rotational speed is paticulaly low (If multiplication of otational speed n min -1 and olling element pitch diamete Dpw mm is Dpw n< 1,) Beaing opeating tempeatue is too high Lubicant is contaminated with foeign matte o moistue 17

Technical Data New beaing life fomula By damatic impovement in beaing mateials and beaing manufactuing techniques, beaings can offe a life seveal times as long as that calculated fom the fomula (3.7) as long as they ae mounted with minimal mounting eos ae fully fee fom foeign matte and adequately lubicated. This finding was obtained by a seies of expeiments pefomed by NTN. NTN's new beaing life calculation theoy is based on a fatigue limit theoy accoding to which unde clean and efficient lubication conditions, beaing life can be indefinite at a paticula contact suface pessue. Fo this pupose, NTN pefoms calculations based on the contact suface pessue at a fatigue limit of 1.5 GPa that is defined in ISO281: 199/Amd2: 2. Incidentally, if foeign matte entes into a beaing, depending on the size and amount of foeign matte, the actual life of that beaing can be much shote than the ating life that is calculated by fomula (3.7). Also, poo lubicating conditions can cause the actual beaing life to be shote than the ating life. NTN's new beaing life calculation is designed to detemine a new life coection facto a NTN by the following fomula. C p Lnm=a1 a NTN ( ) (3.8) P Beaing life theoy (1) Conventional Lundbeg-Palmgen (L-P) theoy Accoding to this theoy, a stess that govens olling fatigue is consideed, that is, a maximum dynamic shea stess τo that is exeted, at a depth of Zo fom the olling contact suface, in a plane paallel with the olling contact suface. Refeing to a theoy of Neube, et. al. which claims that the duability of a mateial deteioates as the volume being subjected to a stess application deceases, the L-P theoy assumes that a fissue occuing at a weak point of mateial at aound the depth Zo eaches the suface and leads to develop flaking. The pobability of suvival S of a volume V that is subjected to N times of stess application is detemined by the fomula below accoding to the Weibull theoy. 1 N e τ c V Rn (3.9) S z h whee, S :Pobability of suvival of stess volume V N :Numbe of epeated stess applications e :Weibull slope (index to epesent vaiation in life) τo :Maximum shea stess Zo :Depth fom suface at which maximum shea stess occus c,h:indexes Fom the basic fomula fo the beaing life elative to olling fatigue (3.9), a geneic life fomula below is obtained: C P p L1= ( ) (3.1) whee, L1:Basic ating life C :Basic dynamic load ating P :Dynamic equivalent load p :(c h+2)/3e (point contact) (c h+1)/2e (line contact) Z 2a Fig. 3.1 Stess volume esulting fom olling contact accoding to L-P theoy (2) NTN's new beaing life theoy While the L-P theoy intends to define intenally occuing flaking owing to the shea stess within a mateial that esults fom hetzian contact, NTN's new beaing life theoy is designed not only to evaluate suface-initiated flaking but also to detemine life of each small segment (ΔL1) based on a local stess (σ1). This is done by dividing an aea fom the inteio to the contact suface of the mateial into small segments as illustated in Fig. 3.2, and finally obtaining the oveall beaing life L by the fomula (3.13). 1 ΔN e i σc iδvi Rn (3.11) ΔS i z h i ΔLi=ΔNi (σ -c i ΔV -1 i z h i ) 1/e (3.12) n -1/e L= { Σ ΔLi -e } (3.13) i=1 whee, ΔSi:pobability of suvival of stess volumeδvi of divided segment L :Oveall beaing life Zi :Depth of divided small stess volumeδvi fom the suface n :Numbe of segments σ u :Fatigue limit stess A stess below which a beaing does not develop failue (flaking) unde ideal lubication conditions. ISO 281: 199/Amd2: 2 specifies 1.5 GPa as a the maximum contact suface pessue at a fatigue limit. NTN uses it as a Von Misses stess equivalent to the maximum contact suface pessue 1.5 GPa. When σi is smalle than σ u (fatigue limit), the life of a egion in question (ΔL1) will be infinitely long. 18

Technical Data NTN's new beaing life fomula The coelation between the NTN's life coection facto a NTN and coected ating life Lnm is defined by the fomula (3.14) below. C p Lnm=a1 a NTN ( ) (3.14) P whee, Pmax Z Fig. 3.2 Calculation model Lnm :Coected ating life a1 :Reliability coefficient a NTN :Life coection facto that eflects mateial popeties, fatigue limit stess, contamination with foeign matte and oil film paamete (Λ) (.1 a NTN 5) C :Basic dynamic load ating P :Dynamic equivalent load p :Index 3 (ball beaing) 1/3 (olle beaing) (1) Effect of fatigue limit NTN's new beaing life fomula intoduces a concept of fatigue life accoding to which the beaing life is infinitely long at a paticula contact suface pessue as illustated in Fig. 3.3 assuming no foeign matte is tapped in the beaing and the beaing is eliably lubicated. y (2) Effect of foeign matte The effect of foeign matte is teated as sufaceinitiated flaking that stats fom a dent esulting fom tapped foeign matte. NTN pefoms a beaing life calculation, assuming that the size of foeign matte and the stess concentation aea in the middle potion (the size of this aea coesponds with that of the foeign matte) in the suface laye as well as the amount of foeign matte significantly affect the beaing life. Dented aceway Nomal aceway Fig. 3.4 Contact suface pessue distibution esulting fom dent (3) Effect of oil film paamete (Λ) The oil film paamete can be used to calculate beaing life. The oil film paamete, designated byλ, is the atio of the oil film thickness to the oughness of the suface. It can be used to calculate the aveage stess acoss the suface laye of two contacting sufaces, such as a olling element and aceway. Fom this suface laye stess, the contact suface pessue can be detemined. Beaing life is then calculated fom the contact suface pessue. Conditions of two objects on suface laye Calculation model Object having composite oughness of two objects Smooth suface Contact suface pessue equivalent to fatigue limit Contact stess Rating life Life eflecting fatigue limit Life Fig. 3.3 Basic concept of fatigue limit Oil film Fig. 3.5 Model of stess load onto the suface laye New life calculation fomula chat Vaious statuses of contamination with foeign matte ae defined in Table 3.2. The values of ISO codes and NAS classes ae those fo ball beaings that ae subjected to moe sevee opeating conditions. Table 3.2 Status of contamination Condition of contamination Extemely clean Clean Nomal Lightly contaminated Modeately contaminated Highly contaminated Seveely contaminated Contamination coefficient 1.8.5.4.3.2.1 Guideline fo application ISO cleanliness code (ISO 446) NAS class Filteed Less than 1 µm 13m 35m 57m 71m 1 µm o moe No filte Ingess of much dust 13/1 15/12 17/14 19/16 21/18 23/2 25/22 3 6 8 9 1 12 19

Technical Data (1) Effect of foeign matte on coelation between load (P/C) and life coection facto a NTN antn antn antn 1 5 Nomal 15 1 Lightly contaminated Modeately contaminated 1.9 1 Highly contaminated.5 Seveely contaminated.1.1.1 1 5 35 16 1 2.5 1.3 Extemely clean Clean Nomal Highly contaminated 1.1 Seveely contaminated Extemely clean Clean.1 1 P/C Fig. 3.6 Coelation between P/C and antn (effect of foeign matte in ball beaing).1.1 1 P/C Fig. 3.7 Coelation between P/C and antn (effect of foeign matte in olle beaing) 1 5 1 5.4 1.6.1 =1 =.5 =.1 =1.5 =2 =3.1.1.1 1 P/C antn Lightly contaminated Modeately contaminated (2) Effect of oil film paamete (Λ) on coelation between load (P/C) and life coection facto a NTN Fig. 3.8 Coelation between P/C and antn (effect ofwith ball beaing) 1 =3 5 =2 =1.5 1 =1 5.4 =.5 1.6 =.1.1 2 Static load ating and allowable axial load Basic static load ating When stationay olling beaings ae subjected to static loads, they suffe fom patial pemanent defomation of the contact sufaces at the contact point between the olling elements and the aceway. The amount of defomity inceases as the load inceases, and if this incease in load exceeds cetain limits, the subsequent smooth opeation of the beaings is impaied. It has been found though expeience that a pemanent defomity of.1 times the diamete of the olling element, occuing at the most heavily stessed contact point between the aceway and the olling elements, can be toleated without any impaiment in unning efficiency. The basic static load ating efes to a fixed static load limit at which a specified amount of pemanent defomation occus. It applies to pue adial loads fo adial beaings and to pue axial loads fo thust beaings. The maximum applied load values fo contact stess occuing at the olling element and aceway contact points ae given below. Fo ball beaings 4 2MPa{428kgf/mm 2 } Fo self-aligning ball beaings 4 6MPa{469kgf/mm 2 } Fo olle beaings 4 MPa{48kgf/mm 2 } Refeed to as "basic static adial load ating" fo adial beaings and "basic static axial load ating" fo thust beaings, basic static load ating is expessed as Co o Coa espectively and is povided in the beaing dimensions table. Allowable static equivalent load Geneally the static equivalent load which can be pemitted is limited by the basic static ating load as stated above. Howeve, depending on equiements egading fiction and smooth opeation, these limits may be geate o lesse than the basic static ating load. This is geneally detemined by taking the safety facto So given in Table 3.3 and fomula (3.13) into account. So =Co/Po (3.13) whee, So:Safety facto Co:Basic static load ating, N {kgf} adial beaings: Co, thust beaings: Coa Po:Static equivalent load, N {kgf} adial beaings: Po, thust beaings: Poa.1.1 P/C 1 Fig. 3.9 Coelation between P/C and antn (effect ofwith olle beaing) 2

Technical Data Table 3.3 Minimum safety facto values So Opeating conditions Ball beaings Rolle beaings High otational accuacy necessay 2 3 Nomal otating accuacy necessay (Univesal application) Slight otational accuacy deteioation pemitted (Low speed, heavy loading, etc.) 1.5 1.5 1 Note: When vibation and/o shock loads ae pesent, a load facto based on the shock load needs to be included in the P max value. Allowable axial load A geate axial load can be exeted on a main spindle beaing on a machine tool allowing fo tool changes while the machine is stationay. When an angula contact ball beaing is subjected to a lage axial load, the contact ellipse between its olling elements and aceway suface can oveflow the aceway suface (Fig. 3.1). Futhemoe, even if the contact ellipse emains within the aceway suface, ovestessing can cause poblems such as denting. The maximum allowable load that does not cause such poblems is defined as the "allowable axial load." The allowable axial load is eached when eithe of the following conditions occus. The end of contact ellipse on the aceway suface eaches the shoulde of eithe an inne o oute ing. The contact suface pessue on the aceway suface eaches 365 MPa in eithe the inne o oute ing aceway. Note that the contact suface pessue of 365 MPa on the aceway suface is a value that leads to a pemanent defomation of.2 to.5 times as much as the olling element diamete and has been detemined though many yeas of expeience. The allowable axial load fo each beaing is found in the associated dimensions table. 4. Allowable Speed High beaing speed leads to high tempeatue ise on the beaing owing to fictional heating within the beaing. When the tempeatue of the beaing exceeds a paticula limit, the lubicant pefomance deteioates significantly, possibly leading to beaing oveheating o seizue. The factos that can affect the maximum allowable beaing speed include: (1) Beaing type (2) Beaing size (3) Lubication system (gease lubication, ai-oil lubication, jet lubication, etc.) (4) Intenal cleaance o peload on the beaing (5) Beaing aangement (2-ow, 3-ow, 4-ow) (6) Beaing load (7) Accuacies of shaft, housing, etc. The maximum allowable speeds listed in the beaing dimensions tables ae efeence values and ae applicable only to individual beaings that ae adequately lubicated and coectly peloaded unde a condition whee the heat is eliably emoved fom the beaing aangement. In the case of gease lubication, these speeds ae attainable only when the beaing is filled with an adequate amount of high-quality gease as given in Table 7.3, the beaing is sufficiently un in, and heat is emoved by an aangement such as a cooling jacket. In the case of oil lubication, these speeds ae attained only by an ai-oil lubication system if an adequate amount of VG1 o 32 spindle oil is supplied and the heat is emoved by an aangement such as a cooling jacket. When using a lage amount of lubicant, a jet lubication system excels in lubication and cooling pefomance, and can pemit opeation at the maximum allowable speed. Howeve, this lubication system involves a high powe loss and should be employed caefully. Fa a H Speed facto The maximum allowable speed of a paticula beaing can vay depending on the elation between heat geneation and heat dissipation in the beaing as well as how well the beaing is lubicated. The beaing aangements (2-ow to 4-ow) and speed eduction atios (speed factos) fo maximum allowable speed due to post-assembly peloads ae summaized in Table 4.1. H Shoulde height of beaing a Semimajo of contact ellipse Fa Axial load Fig. 3.1 Table 4.1 Speed facto by beaing aangement and peload Beaing aangement Matching DB DBT GL.85.7 GN.8.6 GM.65.5 DTBT.8.75.6 21

Technical Data 5. Beaing Aangements and Stuctues of Beaings fo Main Spindles 1 Beaing Aangement fo Main Spindles Typical examples of beaing aangements fo main spindles of machine tools ae summaized in Table 5.1. An optimal beaing aangement must be detemined though consideations about the popeties equied of the main spindle in question (maximum speed, adial and axial igidities, main spindle size, equied Table 5.1 Typical examples of beaing aangements fo main spindles accuacies, lubication system, etc.). Recently, an inceasing numbe of new machine tool models incopoate built-in moto type main spindles. Howeve, heat geneation on a built-in moto can affect the accuacy of the main spindle and pefomance of lubicant, so a main spindle beaing should be selected vey caefully. Beaing aangement fo main spindle Beaing type Typical applications Gea-diven configuation [Type!] Tapeed olle beaing + Tapeed olle beaing + Double-ow cylindical olle beaing Lage tuning machine Oil county lathe Geneal-pupose tuning machine Typical lubication Gease lubication Belt-diven configuation Belt-diven configuation [Type@] Double-ow cylindical olle beaing + Double-diection angula contact thust ball beaing + Double-ow cylindical olle beaing [Type#] Double-ow cylindical olle beaing + High-speed duplex angula contact ball beaing fo axial load + Single-ow cylindical olle beaing NOTE: high-speed vaiant of type@ CNC tuning machine Machining cente Boing machine Milling machine Typical lubication Gease lubication CNC tuning machine Machining cente Milling machine Typical lubication Gease lubication Belt-diven configuation Built-in moto-diven configuation [Type $] Duplex angula contact ball beaing (DBT aangement) + Double-ow cylindical olle beaing NOTE: high-speed vaiant of type@o # [Type %] Double-ow cylindical olle beaing + High-speed duplex angula contact ball beaing fo axial load + Single-ow cylindical olle beaing NOTE: high-speed vaiant of type#with built-in moto-diven configuation CNC tuning machine Machining cente Milling machine Typical lubication Gease lubication CNC tuning machine Machining cente Milling machine Typical lubication Gease lubication Ai-oil lubication 22

Technical Data Beaing aangement fo main spindle Beaing type Typical applications Built-in moto-diven configuation Built-in moto-diven configuation Built-in moto-diven configuation [Type ^] Single-ow cylindical olle beaing + High-speed duplex angula contact ball beaing fo axial load + Single-ow cylindical olle beaing NOTE: high-speed vaiant of type % [Type &] Duplex angula contact ball beaing (DTBT aangement) + Single-ow angula contact olle beaing (w/ ball slide) NOTE: supe high-speed vaiant [Type *] Duplex angula contact ball beaing (DTBT aangement) + Duplex angula contact olle beaing (w/ ball slide) NOTE: supe high-speed vaiant CNC tuning machine Machining cente Typical lubication Gease lubication Ai-oil lubication Machining cente <vetical> Typical lubication Gease lubication Ai-oil lubication Machining cente <vetical> Typical lubication Gease lubication Ai-oil lubication Built-in moto-diven configuation Built-in moto-diven configuation [Type (] Duplex angula contact ball beaing (DTBT aangement) + Single-ow cylindical olle beaing NOTE: supe high-speed vaiant [Type )] Adjustable peload beaing unit + Duplex angula contact ball beaing (DBT aangement) + Single-ow cylindical olle beaing NOTE: high-igidity/supe high-speed vaiant Machining cente Typical lubication Gease lubication Ai-oil lubication Machining cente Typical lubication Ai-oil lubication Built-in moto-diven configuation [Type)!] Duplex angula contact ball beaing (DT aangement) + Duplex angula contact ball beaing (DT aangement) Machining cente Small tuning machine Ginding machine Typical lubication Gease lubication Ai-oil lubication Belt-diven configuation [Type )@] Duplex angula contact ball beaing (DT aangement) + Duplex angula contact ball beaing (DT aangement) Ginding machine Typical lubication Gease lubication Ai-oil lubication Oil-mist lubication 23

Technical Data 2 Beaing selection based on beaing aangement fo main spindle An optimal beaing poduct that best suits the application is selected by efeing to the beaing selection table in Table 5.2, which contains the possible beaing aangements fo main spindles. Designate the fee side and fixed side. Select the beaing aangement type (I to XII) on the fee o fixed side. Select a set of beaing specifications applicable to the selected aangement type. Choose a lubication system suitable fo the selected beaing specifications. Select a poduct goup that satisfies the abovementioned consideations. Table 5.2 Beaing selection table Fix side Duplex angula contact ball beaing o adjustable peload beaing mechanism + Duplex angula contact ball beaing Fee side Single-ow angula contact ball beaing o duplex angula contact ball beaing (w/ ball bush) Beaing aangement Beaing aangement [Type &, *, )!, [Type $&*( o )@] )!o )@ Cylindical olle beaing + Duplex angula contact ball beaing Beaing aangement [Type@,#,% o ^] Tapeed olle beaing + Cylindical olle beaing Beaing aangement [Type!] Double-ow cylindical olle beaing o single-ow cylindical olle beaing Beaing aangement [Type!, @, #,$, %, ^, (, o )] Beaing specifications Angula contact ball beaing fo adial load Contact angle 3 o smalle Cylindical olle beaing Angula contact ball beaing fo axial load Contact angle less than 6 Thust contact ball beaing Cylindical olle beaing Lubication system Ai-oil lubication Oil lubication Gease lubication Gease lubication Gease lubication Sealed Applicable poduct goups/ultage Steel balls/ceamic balls 15 78C, 72C 15, 25, 3 79U/5S-79U7U/5S-7U 15, 2, 25 2LA-HSE9U/5S-2LA-HSE9U 2LA-HSE/5S-2LA-HSE Ginding machine main spindle/ moto shaft seies 15 BNT9/5S-BNT9 BNT/5S-BNT BNT2/5S-BNT2 Supe high-speed/dedicated ai-oil lubication seies 25 5S-2LA-HSF Eco-fiendly type 2, 25 5S-2LA-HSL9U 5S-2LA-HSL 5S-2LA-HSFL With e-lubicating hole on the oute ing 2, 25 5S-2LA-HSEW9U 5S-2LA-HSEW Double-ow Single-ow 15, 25 79 LLB/5S-79 LLB 7 LLB/5S-7 LLB 15, 2, 25 2LA-BNS9 LLB/5S-2LA-BNS9 LLB 2LA-BNS LLB/5S-2LA-BNS LLB NN3/NN3K NN3HS/NN3HSK NN3HST6/NN3HST6K NN3HSRT6/NN3HSRT6K NN49/NN49K NNU49/NNU49K N1HS/N1HSK N1HSRT6/N1HSRT6K Eco-fiendly type N1HSLT6/N1HSLT6K 3 HTA9A HTAA/5S-HTAA 4 HTA9U HTAU/5S-HTA 6 5629/5629M 562/562M 329XU 4T-32X/32XU Inch seies tapeed olle beaing Consideations fo selection pocedue Beaing selection High-speed pefomance (geneal) HighLow Contact angle 15, 2, 25, 3 Rigidity Radial igidity HighLow Contact angle 15, 2, 25, 3 Axial igidity LowHigh Contact angle 15, 2, 25, 3, 4, 6 Complex igidity (adial and axial) High (4-ow) Medium (3-ow) Low (2-ow) Recommended aangement 4-ow (DTBT) o 2-ow (DB) Recommended lubication specifications Standad main spindle : Gease High-speed main spindle : Ai-oil Low-noise : Gease o eco-fiendly ai-oil Pesence of cooling jacket aound the beaing. In paticula, gease lubication is ecommended. 24

Technical Data 3 Adjustable peload beaing unit A ecent tend in the machine tool industy is a steady incease of opeating speeds. The maximum dmn value (pitch cicle diamete acoss olling elements dm[mm] multiplied by speed n[min -1 ]) eached by main spindles with ai-oil lubicated lubication can be as high as 2.5 to 3.8 1 6. At the same time, main spindles ae equiing inceased igidity. Theefoe, main spindle beaings must be capable of both high-speed opeation and high igidity. This can be achieved though optimal peloading. A fixed peload (sping peload) system is usually employed to satisfy both these high speed and high igidity equiements. A spindle unit with fixed-position peload that is adjustable fo diffeent speed conditions is advantageous fo optimizing the igidity of the unit. The NTN Adjustable Peload Beaing Unit is a highspeed, high-igidity unit that featues fixed position peload that can be adjusted fo diffeent speed conditions. The NTN Adjustable Peload Beaing Unit is illustated in Fig. 5.1. Hydaulic pessue is used to shift the position of the adjustable peload sleeve situated in the ea beaing section of the unit. This changes the peload on the beaings. A spindle incopoating a 3-step adjustable peload beaing unit is illustated in Fig. 5.2. The sleeve in the adjustable peload section is compised of two hydaulic pessue chambes, A and B, as well as a spial goove fo sliding motion. The peload can be adjusted to one of thee settings by changing the hydaulic pessue in each of the chambes. To achieve instantaneous and eliable adjustment, high-pessue oil (at the same pessue as in the hydaulic chambes) is supplied to the spial goove on the outside of the sleeve. This oil povides lubication so that the sleeve can move smoothly. Angula contact ball beaing with ceamic balls Adjustable peload section Adjustable peload sleeve Hydaulic pessue chambe A Hydaulic pessue chambe B Hydaulic pessue in spial goove (fo sliding motion) Adjustable peload unit Wok piece side Locating side beaing Peload adjustment side beaing Dive side Beaing box Main spindle Angula contact ball beaing with ceamic balls Fig. 5.1 Adjustable peload beaing unit Low speed ange (high peload) Medium speed ange (medium peload) High speed ange (low peload) Spial goove Hydaulic pessue ON (Positive sign means cleaance, while negative sign means peload.) Hydaulic pessue ON (Positive sign means cleaance, while negative sign means peload.) Hydaulic pessue OFF (Positive sign means cleaance, while negative sign means peload.) L2 L1 Fig. 5.2 Typical spindle configuation incopoating 3-step Adjustable Peload Type Beaing Unit Opeating mechanism Fig. 5.3 shows the hydaulic opeation of the unit fo thee peloading conditions as well as the associated motion of the adjustable peload sleeve. Low speed opeation(high peload): Chambe A is pessuized. Component 1 moves to the ight by a peset cleaance L1 and contacts component 3. The axial cleaance is δ1. Medium speed opeation(medium peload):chambe B is pessuized. Components 1 and 2 move to the ight by a peset cleaance L2, causing Component 2 to contact Component 4. The axial cleaance isδ2. High speed opeation(low peload):chambes A and B ae not pessuized. Components 1 and 2 etun to the left due to the eaction foce on the beaing. This causes Component 2 to contact Component 5, theeby etuning the axial cleaance to the initial setting ofδ3. NOTE: The etun motion of the components 1 and 2 is achieved by the eaction foce of beaing o a sepaately povided sping. Fig. 5.3 Opeating mechanism of Adjustable peload 25

Technical Data 4 Beaing jacket cooling system With a built-in moto dive system, the main spindle is diectly diven by a moto and is theefoe suitable fo apid acceleation o deceleation. Howeve, this system can be advesely affected by tempeatue ise. A cooling jacket with a spial goove aound the housing allows cooling oil to flow though the unit. If heat geneated by the moto affects the beaing, oveheating of the beaing as well as degadation of the gease can occu. This situation must be stictly avoided. When designing a cooling system with jacket cooling, the following should be consideed. Consideations about cooling of jacket A typical beaing aangement is shown in Fig. 5.4 and 5.5, compising a double-ow cylindical olle beaing and an angula contact ball beaing set. The cooling goove on the jacket in Fig. 5.4 stats at aound an aea above the angula contact ball beaings and does not cool the double-ow cylindical olle beaing effectively. (Note that the fit of the angula contact ball beaings with the boe of the housing is a cleaance fit-the beaings ae not in diect contact with the housing) In the configuation in Fig. 5.5, the cooling goove extends to the egion above the double-ow cylindical olle beaing, and cools both the angula contact ball beaings and the double-ow cylindical olle beaing effectively. IN OUT Cooling goove on jacket IN Cooling goove on jacket OUT Fig. 5.4 Inadequate cooling goove on jacket Fig. 5.5 Adequate cooling goove on jacket Test conditions Test beaing Peload afte assembled Lubication system 5S-2LA-HSE14DB 1N (Fixed position peloading) Ai-oil lubication Test conditions Test beaing Mounted adial cleaance Lubication system NN328HST7-5µm Gease lubication Tempeatue incease on oute ing C 7 6 5 4 3 2 1 6 w/ jacket cooling w/o jacket cooling 1 14 18 22 Speed min -1 Tempeatue incease on oute ing C 7 6 5 4 3 2 1 w/ jacket cooling w/o jacket cooling 1 2 3 4 5 Speed min -1 1 15 dmn value 1 4 Fig. 5.6 Vaiation in beaing tempeatue depending on pesence/absence of jacket cooling (angula ball beaing) 25 5 75 dmn value 1 4 Fig. 5.7 Vaiation in beaing tempeatue depending on pesence/absence of jacket cooling (cylindical olle beaing) 26

Technical Data 6. Handling of Beaings 1 Cleaning and filling with gease To achieve maximum speed and limited tempeatue ise with a pecision olling beaing, it is vital to handle the beaing coectly. The handling of beaings involves cleaning, dying, filling with gease (if necessay), and the unning-in opeation. Fo each step, follow the pecautions and instuctions. A sealed beaing contains pefilled gease. Do not clean (inse) and dy this type of beaing. Only wipe away ustpeventive oil with a clean cloth befoe assembling the beaing. Cleaning (emoval of ust-peventive oil) Immese the beaing in keosene o a highly volatile solvent such as naphthesol and wash it by hand. Then emove the keosene using benzene o alcohol. Use clean compessed ai to blow away the insing fluid. (The beaing may be used as deliveed fo the ai-oil lubication. Howeve, we ecommend that afte cleaning, the beaing eithe be coated with the lubicant to be used o a less viscous oil, o be immesed in the lubicant o othe low-viscosity oil.) Dying If the beaing is to be used with gease lubication, it is necessay to thooughly dy the beaing to avoid leakage By using an injecto o small plastic bag, fill gease between balls in equal amounts, aiming at the olling suface of the inne ing. of gease. Afte dying, be sue to immediately fill the beaing with gease. Dying can be pefomed by blowing hot ai onto the beaing o placing the beaing in a chambe at constant tempeatue. When dying by hot ai, be sue to conside the cleanliness of the ai. Filling with gease The pocedues fo geasing ball and olle beaings can be found below. Afte filling with gease, tun the beaing by hand to unifomly distibute the gease to the whole olling suface. <Ball beaings> See Photo 6.1 By using an injecto o small plastic bag, fill gease between balls in equal amounts, aiming at the inne ing olling suface. Fo a beaing with a ing-guided cage, also apply gease to the guide suface of the cage using a spatula o simila tool. If gease cannot be filled into the inne ing olling suface because of a small gap between the cage and the inne ing add gease to the oute ing olling suface. In this case, caefully tun the beaing so that the gease is fully spead on the inne ing side. <Rolle beaings> See Photo 6.2 Apply gease to the oute (inne) side of olles, and while tuning the olles with finges, spead the gease to the inne ing (oute ing) side. Apply gease to the oute cicumfeence of cage. Afte completion of filling Apply gease to the oute side of the olles, and while tuning the olles with finges, spead the gease to the inne ing (oute ing) side. Tun the beaing by hand while applying an appopiate load in the contact angle diection so that the any aea in the inteio of beaing is sufficiently lubicated with gease. (Afte applying gease) If a lump of gease emains on the oute face of cage ib, the unning-in opeation can take a longe time. With finges, spead the gease deposited on the oute suface of the ib on the cage. Photo. 6.1 Filling gease into angula contact ball beaing Photo. 6.2 Filling gease into cylindical olle beaing 27

Technical Data Running-in opeation (1) Ai-oil o oil-mist lubication The unning-in opeation is elatively simple with oil lubication because no peak tempeatue occus and the beaing tempeatue stabilizes within a elatively shot time. NTN ecommends that the speed of beaing is to be inceased in steps of 2 to 3 min -1 until the maximum speed is eached. Evey speed setting should be maintained fo about 3 minutes. Howeve, fo the speed ange whee the dmn (pitch cicle diamete acoss olling elements multiplied by speed) exceeds 1,,, incease the beaing speed in steps of 1 to 2 min -1 to ensue the stable unning. (2) Gease lubication Fo a gease-lubicated beaing, a unning-in opeation is vey impotant in attaining stable tempeatue ise. Duing a unning-in opeation, a lage tempeatue ise (peak) occus while the beaing speed is inceased, and then the beaing tempeatue eventually stabilizes. Befoe tempeatue stabilization, a cetain lead time will be needed. Ball beaing NTN ecommends that the beaing speed be inceased in steps of 1 to 2 min -1 and be futhe inceased only afte the tempeatue has stabilized at the cuent speed setting. Howeve, fo the speed ange whee the dmn exceeds 4,, incease the beaing speed in steps of 5 to 1 min -1 to ensue the stable unning. Rolle beaing Compaed with contact ball beaings, the time to peak tempeatue o satuation in unning-in opeation of olle beaings tends to be longe. Also, thee will be tempeatue ise due to whipping of the gease and the tempeatue ise may be unstable. To cope with this poblem, un the olle beaing in the maximum speed ange fo a polonged peiod. Incease the beaing speed in steps of 5 to 1 min -1 only afte the beaing tempeatue has stabilized at the cuent speed setting. Fo the speed ange whee the dmn exceeds 3,, incease the beaing speed in steps of 5 min -1 to ensue safety. 2 Mounting When mounting a beaing to a main spindle, follow eithe of the mounting techniques descibed below (1) Pess-fitting with hydaulic pess (2) Mounting by heating beaings With eithe technique, it is impotant to minimize the advese effects of the mounting pocess to maintain beaing accuacy. (1) Pess-fitting with hydaulic pess Befoe pess-fitting a beaing with a hydaulic pess o hand pess, the pess-fitting foce due to the intefeence between the shaft and inne ing must be calculated. A hydaulic pess having a capacity geate than the equied pess-fitting foce must used. Next, using an inne ing pess-fitting jig, the inne ing is coectly pess-fitted to the shoulde of shaft. Please be caeful not to exet a foce on the oute ing. Afte the pess-fitting opeation, it is impotant to measue the accuacies of vaious potions of the beaing to veify that the beaing has been coectly mounted to the shaft. When using a multi ow beaings, measue the unout afte assembly and coect misalignment acoss the oute ings as necessay. Hydaulic pess Pess-fitting jig Fig. 6.1 Pess-fitting pessue Shaft otation Fig. 6.2 Checking fo face unout of inne ing Measuement of concenticity of oute ing Fig. 6.3 Checking fo concenticity of oute ing Calculation of pess-fitting foce The pess-fitting foce occuing fom the intefeence between the shaft and inne ing can be detemined by the fomula given below. Accoding to the calculated pess-fitting foce, a hydaulic pess having a sufficiently lage capacity must be used to mount the beaing. The vaiations in dimensional eos among the beaings should be consideed. The foce needed to pess the inne ing to the shaft can be obtained with the following fomula (6.1). Foce to pess-fit inne ing to shaft Kd=μ P π d B (6.1) whee, Kd: Foce fo pess-fitting o extacting an inne ing N P : Suface pessue on fitting suface MPa (see Table 6.1) d : Shaft diamete, inne ing boe diamete mm D : Oute ing outside diamete mm B : Inne ing width μ: Sliding fiction coefficient (when pess-fitting inne ing ove cylindical shaft:.12) 28

Technical Data Table 6.1 Fitting conditions and calculation fomulas Symbol (unit N [kg]-mm) Fits between solid steel shaft and inne ing d : Shaft diamete, inne ing boe P E deff d 2 16.2 do : Hollow shaft boe 2 d Di diamete diamete Di :Inne ing aveage aceway goove Fits between hollow steel shaft and inne ing diamete 2 2 E deff1dodi 1doddeff : Effective P 2 intefeence 2 d 1doDi MPa E : Modulus of Kgf mm 2 6.3 longitudinal elasticity = 21 GPa Fitting suface pessue d Δdeff = Δd (6.4) d+2 (In the case of a gound shaft) Δd : Theoetical intefeence fitting 4d+D D i=1.5 (6.5) 5 d Fig. 6.4 Example of calculation fo pess-fitting foce The calculation fo pess-fitting foce fo tight fit of 2 μm intefeence between the shaft and inne ing fo the standad angula contact ball beaing is as summaized below: 72UC (φ1 φ15 24) Intefeence fit of 2μm (solid shaft) 1 Δdeff=.2=.196 12 4 1+15 Di=1.5 =115.5 5 21.196 1 P= [1 ( ) 2 ]=.52 MPa 2 1 115.5 Kd=.12.52 π 1 24=47 N B d Di (2) Mounting by heating beaings When mounting a beaing to a shaft using a constant tempeatue chambe, beaing heate o the like, follow the instuctions below. Heat the beaing at a tempeatue that eflects the intefeence between the shaft and inne ing (see Fig. 6.5). Assuming linea expansion coefficient 12.5 1-6, heating tempeatueδt, inne ing boe diamete φd, and intefeence fit δ=12.5 1-6 d ΔT Ex.) If φd = 1 mm, and δ=.3 (3 μm, tight fit), then the equied heating tempeatue ΔT = 23.8 C. Theefoe, the beaing should be heated to appoximately oom tempeatue + 3 C. Note that in pactice, the lowe-tempeatue shaft will cool the beaing, causing it to shink. Consequently the beaing may need to be heated by moe than 3 C fo assembly. NOTE If a esin mateial is used fo the cage of angula contact ball beaing, do not excessively heat the beaing (appox. 8 C max.). As a esult of heating beaings afte cooling, the inne ing will axially shink, and thee will be cleaance between the beaing side face and shaft shoulde (Fig. 6.6). Fo this eason, keep the beaing and shaft foced togethe with a pess o the like afte the unit etuns to nomal tempeatue. Afte cooling, check that the beaing is mounted to the shaft coectly. When using a beaing heate, be sue to avoid oveheating. To pevent beaing fom being magnetized, use equipment that has a demagnetizing featue. Diametic expansion of inne ing boe m 28 26 24 22 2 18 16 14 12 1 8 6 4 2 Diffeence in tempeatue befoe and afte heating the beaing 9 C k5 j5 8 C 7 C 6 C 5 1 15 2 25 3 35 4 45 5 55 6 Beaing boe diamete mm Fig. 6.5 Requied heating tempeatue fo mounting by heating inne ing Remaks: The maximum intefeence amounts ae intefeence values associated with class beaings. 6 p6 n6 m6 5 C 4 C 3 C 28 26 24 22 2 18 16 14 12 1 8 6 4 2 Max. intefeence amount m To accommodate fo vaiation in the lubication conditions, incopoate a safety facto of 2 to 3. As a esult, the equied pess-fitting foce is: 47 (2 to 3) = 94 to 141 N Afte cooling Shinkage Fig. 6.6 Cooling afte mounting by heating beaings 29

Technical Data 3 Tightening of inne ing When mounting and secuing a beaing to a main spindle, the inne ing side face is usually clamped with a stepped sleeve o pecision beaing nut, and the font cove situated on the oute ing side face is bolted down. When utilizing a stepped sleeve o pecision beaing nut to clamp the inne ing, the following pecautions must be followed. Tightening with stepped sleeve The stepped sleeve is designed that the hydaulically expanded sleeve is inseted ove the shaft, and a pedetemined dive-up foce (tightening foce) is applied to the shaft. Then the hydaulic pessue is eleased in ode to secue the sleeve onto shaft and povide a tightening foce to the beaing. This technique is a elatively simple locking method (Fig. 6.7). Note howeve afte being locked in position by intefeence with the shaft, the sleeve can come loose because of deflection of the shaft o a moment load applied to the shaft. Fo this eason, in many cases, a stepped sleeve is used togethe with a beaing nut as illustated in Fig. 6.8. Stepped sleeve Application of tightening foce Hydaulic pessue Fig. 6.7 Tightening with stepped sleeve Stepped sleeve Pecision beaing nut Fig. 6.8 Tightening with stepped sleeve + pecision beaing nut Tightening with pecision beaing nut Requied tightening foce is achieved with the pecision beaing nut (pecision locknut) by coectly contolling the tightening toque. Note that when a beaing has been locked with a pecision beaing nut (lock nut), the nut can develop inclination owing to the cleaance on the theaded potions. If this poblem occus, fine adjustment will be necessay to obtain necessay unning accuacy fo the shaft. Locking setscew Pecision lock nut Coelation between tightening toque and tightening foce with pecision beaing nut The coelation between tightening toque and tightening foce with a pecision beaing nut can be defined with the fomula given below. Because the thead face of the pecision beaing nut, the thead face of the shaft and the beaing suface and nut constitute sliding sufaces, the coelation between tightening toque and tightening foce will vay depending on the fiction coefficient. Theefoe, the nut needs to be thooughly un on the shaft thead in advance to ensue smooth and unifom tightening. It is also necessay to detemine the coelation between tightening toque and tightening foce by using a load washe o the like in advance. M F= (6.6) (d/2)tan(β+ρ)+ nμ n F :Thead tightening foce N M :Nut tightening toque N-mm d :Effective diamete of thead mm ρ :Fiction angle of thead face μ tan ρ= (6.7) cos α β :Lead angle of thead tan β=numbe of theads pitch/πd (6.8) n :Aveage adius of beaing nut suface mm μn:fiction coefficient of beaing nut suface μn =.15 μ :Fiction coefficient of thead face μ =.15 α :Half angle of thead Example calculation Beaing nut AN2 (Fig. 6.1) Thead data M1 2 (class 2 thead) Effective diamete d=φ98.71 mm 11 Half angle of thead α= 3 Fig. 6.1 The coelation between a tightening toque and tightening foce with the pecision beaing nut can be calculated as follows:.15 tan ρ= ρ=9.826 cos3 1 2 tan β= β=.37 π 98.71 (11+12)/2 n= =55.25 2 18 M F 98.71 tan.379.82655.25.15 2 M 17.163 12 Fig. 6.9 Tightening with pecision beaing nut 3

Technical Data 4 Elastic defomation of space by tightening foce When incopoating a beaing into a main spindle, the beaing must be coectly foced into a pedetemined position and maintained with a pedetemined beaing pessue in ode to maintain appopiate accuacies, cleaances and igidities of the beaing and main spindle. When axially locating a duplex angula contact ball beaing by using a beaing space the coss-sectional aea of space as well as (depending on the tightening foce) the beaing pessue and elastic defomation by tightening of the space must be consideed. Coelation between inne ing space tightening foce and amount of elastic defomation When secuing an angula contact ball beaing onto a main spindle, the beaing inne ing is tightened and locked by the shoulde of main spindle and a beaing nut and/o stepped sleeve. This inne ing tightening foce causes the space to develop elastic defomation in the axial diection, vaying the axial cleaance on the beaing. In the case of a back-to-back duplex beaing (DB, DTBT o DBT) fo a main spindle in paticula, the inne ing tightening foce will decease the beaing cleaance, possibly leading to an inceased postassembly peload and opeating peload. A possible inne ing tightening foce-deived axial defomation can develop in the fom of defomation of both the inne ing and inne ing space. Howeve, NTN's expeience has shown that only the elastic defomation on inne ing spaces needs to be consideed. Inne ing tightening foce Elastic defomation Fig. 6.11 Elastic defomation of inne ing space The amount of defomation of a space is calculated using the following fomula: P L δ= (6.9) A E δ :Elastic defomation mm P :Inne ing tightening foce N L :Inne ing space width mm A :Inne ing coss-sectional aea mm 2 E :Young's modulus 21, MPa The equie tightening foce exeted onto inne ing spaces vaies depending on the beaing manufactue. Fom its expeience, NTN adopts the typical values listed in Table 6.2. Table 6.2 Nut tightening foce Beaing boe diamete (mm) 68 112 1517 2 25 3 35 4 45 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 14 15 16 17 18 19 2 22 24 26 28 3 Nut tightening foce (N) 147 22 29 29449 4998 98147 147245 245343 343441.1.2 NOTE 1) NTN has specified the nut tightening foces in this table based on expeiences fom eviewing and assessing the dawings fom uses. Howeve, NTN has no poduction ecod fo boe diamete of 22 mm o lage. Thus, the nut tightening foces in paentheses ae estimated values. NOTE 2) Fo ball scew suppot beaings (BST), a tightening toque appoximately 3 times as lage as the peload is ecommended. 5 Font cove dive-up Font cove dive-up (mm) When mounting and secuing a beaing onto a main spindle, the inne ing is usually tightened with a stepped sleeve o pecision beaing nut and the oute ing side is bolted down. When locking the oute ing with a font cove, the following points need to be consideed. Font cove pessing amount The beaing oute ing is tightened and locked between the shoulde of the housing and font cove at the main spindle font section. The font cove is installed by utilizing bolt holes (6 to 8 positions) on its flange. The usual pessing allowance on the oute ing and the font cove, which NTN has adopted though expeience, falls in a ange of.1 to.2 mm. Too lage a pessing amount on the oute ing o a smalle numbe of fastening bolts may lead to poo oundness of the beaing ing. Typical fit and deteioation in oundness of a aceway suface esulting fom a pessing amount of.5 mm on the oute ing ae shown in Fig. 6.14. Also, typical oute ing pessing amount and deteioation of a aceway suface with a fit of 5μm loose ae povided in Fig. 6.15. 31

Technical Data To avoid defomation of the oute ing aceway suface, NTN ecommends that the oute ing be installed to a highly accuate housing in tansition fit with a lage numbe of bolts. 1 12(=.1 to.2 mm is ecommended) 2 Locked with bolt Deteioation in oundness of aceway suface (m) 3 2 1 Fit: 5 m loose Bolt tightening toque: 2 kn-cm Bolts, 2 pos. Bolts, 6 pos..1.2.3.4.5 Pessing allowance on oute ing (mm) Font cove Fig. 6.15 Pessing allowance on oute ing vs. deteioation in oundness of aceway suface Fig. 6.12 Font cove pessing allowance 6 Checking axial igidity In the typical method fo checking fo the axial igidity of a beaing installed to a machine tool, the main spindle itself is pushed with a push-pull gage to measue the esultant axial displacement. A method using a dial indicato is descibed below. Two dial indicato ae placed on two locations (axisymmetic locations sepaated by 18 ) at the leading end of the main spindle. Use magnetic stands to secue the dial indicato to the end face of housing. Then, apply the load onto the main spindle and the esultant axial displacement is measued. Fig. 6.13 Measuing position fo oundness on oute ing aceway suface Shaft end of main spindle Dial indicato Hydaulic cylinde Deteioation in oundness of aceway (m) 8 7 6 5 4 3 2 1 Pessing amount on oute ing:.5 mm Bolt tightening toque: 2 kn-cm Bolts, 2 pos. Bolts, 6 pos. 3 5 9 12 Fitting amount allowance between beaing outside suface and housing (m) Dial indicato Photo 6.3 Fig. 6.14 Effect of fit of oute ing on oundness of aceway suface Measuing load (push-pull gage etc.) Dial indicato Dial indicato Fig. 6.16 Checking fo axial igidity 32

Technical Data 7 Cleaance adjustment fo cylindical olle beaing When incopoating a cylindical olle beaing into a main spindle of a machine tool such as an NC tuning machine o machining cente, and setting the intenal cleaance to zeo o to a negative cleaance, the inne ing of the beaing usually has a tapeed boe. The intenal cleaance is adjusted by fitting the tapeed boe beaing onto the tapeed potion of the main spindle and diving the beaing in the axial diection to expand the inne ing. Fo adjusting the intenal cleaance, two methods ae available: a method consisting of cleaance measuement fo each beaing and adjustment with a space(s), and a method with a post-mounting intenal cleaance adjustment gage. Method with cleaance measuement and adjustment with space (s) Adjust the beaing intenal cleaance by following the pocedue descibed below: (1) Calculation of oute ing shinkage (see Fig. 6.17) Calculate the intefeence at the fitting aea Δdeff between the oute ing and housing. Measue the housing boe diamete fist, and then calculate the intefeence Δdeff fom the oute ing outside diamete listed on the beaing inspection sheet. EX. 1 Beaing oute ing outside diamete φ15 mm (Inspection sheet = -.5) Housing boe diamete D φ15 mm (measuement data = -.7) Intefeence at fitting aea Δdeff =.2 (2 μm tight) Calculate the oute ing shinkage ΔG with the fomula (6.1). Dh D D Housing Fig. 6.17 Fit between oute ing and housing D 1DDh 2 Gdeff 6.1 D 1DD 2 DDh 2 EX. 2 Housing outside diamete Dh=φ2, oute ing outside diamete D=φ15, oute ing boe diamete D = φ137 137 115/2 2 G.2.156.11 15 1137/15 2 15/2 2 (2) Measuement of beaing position and beaing adial cleaance on a tempoaily mounted beaing Mount the beaing inne ing with the cage and olles onto the tapeed shaft (see Fig. 6.18). In this pocess, foce the inne ing until its tapeed boe face is fully seated, and then measue the distance between the shaft shoulde and inne ing side face (L1). NOTE: Afte mounting the inne ing, check that the beaing side face is squae to the main spindle centeline. At this point, mount the oute ing, move the oute ing up and down by hand and then measue the intenal cleaance afte mounting (Δ1)(see Fig. 6.19). Calculate the estimated beaing cleaance Δ1 afte pess-fitting the oute ing into the housing with the fomula (6.12). The esult of the calculation eflects the oute ing shinkage ΔG. Δ1=Δ1 ΔG (6.12) EX. 3 Intenal cleaance afte mounting Δ1=.3 Oute ing shinkage ΔG=.15 Estimated beaing cleaance Δ1 =.3 -.15 =.285 (3) Adjustment of space width between shaft shoulde and inne ing To adjust the beaing cleaance to a pedetemined taget value (δ) afte mounting, detemine the space width Ln with the fomula (6.13) (efe to Figs. 6.2 and 6.21). Ln=L1+f(δ Δ1) (6.13) (n=2,3,4 ) The value f in the fomula (6.13) is found in the table below. L1 1 Ln n Table 6.3 Value f Value dmdi Value f.2 13.2.3 14.3.4 15 Fig. 6.18 Measuement of beaing position Fig. 6.19 Measuement of beaing adial cleaance Fig. 6.2 Cleaance measuement afte insetion of space.4.5.5.6.6.7 16 17 18 di dm Fig. 6.21 Explanation of dmdi 33

Technical Data EX. 4 In the case of NN32K, if d = dia.φ1, width B = 37, and di = d + 1/12 B/2, then di = dia.φ11.54717. If the tageted post-mounting cleaance value δ=.15, L1 = 15, dm = dia.φ6, Δ1 =.285, then dm/di= 6/11.5417 =.599, and, theefoe, f = 17. Thus, the space width Ln between the shoulde and inne ing equivalent to δ=.15 will be the value shown by the fomula below: Ln=15+17 (.15.285)=14.775 (4) Beaing cleaance measuement afte insetion of space (see Fig. 6.2) Inset a space that satisfies the space width Ln between the shoulde and inne ing detemined in the pevious step, and tighten the inne ing until the space does not move. Next, move the beaing oute ing up and down by hand and measue the intenal cleaance afte mounting (post-mounting intenal cleaance) Δn. The estimated beaing cleaance Δn afte pess-fitting of the oute ing into the housing is detemined with the fomula below: (n=2,3,4 ) Δn=Δn ΔG (6.14) (5) Final adjustment fo space width Repeat the steps (3) and (4) above to gadually decease the space width Ln so as to adjust the postmounting beaing cleaance to the tageted cleaance. By plotting the coelation between the space width and post-mounting cleaance as illustated in Fig. 6.22, the space width fo the final tageted cleaance will be moe eadily obtained. Positive cleaance: All olles ae sliding athe than olling. Cleaance = : About half of the olles ae olling but the est ae sliding. Negative cleaance: All olles ae olling. Measuement with mounted intenal cleaance gage The mounted intenal cleaance gage has a cylindical ing, which has a cut-out so that the ing can be opened and closed. The boe suface of the ing is used as a location fo measuement. The cleaance at the location fo measuement is popotional to the eading on the dial indicato. As illustated in Fig. 6.23, the cleaance gage consists of a ing gage, dial indicato, and attachment components. Its fixtue potects the intefeence gage against possible defomation when not in use. Fo the measuing opeation, detach the fixtue. Dial indicato Gage suppot bolt Gage bolt Fixtue Open/close bolt NTN NN3XXK Ring gage Handle Fig. 6.23 Desciptions of vaious components on mounted intenal cleaance measuement gage Usage of mounted intenal cleaance gage (1) Measuement of oute ing aceway diamete (boe diamete) Mount the oute ing into the housing. (Fo easy mounting, heat the housing.) Wait until the tempeatue of the oute ing is same as that of the inne ing, and then measue the oute ing aceway diamete (boe diamete). Take measuements at seveal points and calculate the aveage, and then zeo the gage at this aveage value..4 Assembled cleaancemm.3.2.1 Tageted value Photo 6.4 -.1 14.2 14.4 14.6 14.8 15 Space width Lnmm Fig. 6.22 Coelation between space width Ln and post-mounting cleaance Δn 34

Technical Data (2) Setup of mounted intenal cleaance gage Place the cylinde gage, onto the boe suface of cleaance adjustment gage as shown in Photo 6.5, and adjust it with the open/close bolt so that its dial 1 is set to zeo (see Photo 6.6). When the eading of dial 1 of the cylinde gage is zeo, adjust the gage bolt so that the pointe of dial 2 points at the ed mak (coection amount of the gage). (Photo 6.6) With the gage bolt, adjust the gage so that the shot pointe is situated at the scale 2 position. (With the lage size, inset the pin into the hole of the open/ close bolt and make fine-adjustment.) NOTE 1) Photo 6.6 shows the inne ing and olles. When the coection amount of the gage is adjusted, adjust it only with the thickness gage. NOTE 2) The pointe of dial 2 is diected to the ed mak. The pupose of this is to compensate cleaance eo caused due to the stuctue of mounted intenal cleaance gage. The coection amount can vay fom gage to gage. NOTE 3) When the pointe of dial 2 is in line with the ed mak, the zeo eading on dial 2 coincides with the zeo beaing cleaance. (3) Setting up the mounted intenal cleaance gage on the main spindle Mount the inne ing onto the main spindle, and lightly tighten the beaing nut. Tightening the open/close bolt (see Fig. 6.23) on the cleaance adjustment gage will cause the gage boe to expand. With the gage boe expanded by about.15 mm, inset the gage into the outside diamete potion of the olle set in the inne ing. Be caeful not to damage the olles (Photo 6.7). Loosening the open/close bolt will cause the gage boe to shink. Loosen the open/close bolt to bing the gage boe into contact with the outside diamete of the ball set in the inne ing. Lightly swing the cleaance adjustment gage in the cicumfeential diection to stabilize the pointe on the dial indicato. the distance between the inne ing side face and shaft shoulde (dimensionrin Fig. 6.24). Measue this dimension in at least thee locations, and finally adjust the space widthrto the aveage of thee measuements. Loosen and emove the shaft nut, inne ing space and inne ing fom the main spindle. Dial 2 Photo 6.5 Photo 6.6 Dial 1 (4) Setup of inne ing cleaance Tighten the shaft nut of the main spindle. This should be done gadually to pevent shock loading. Tightening the nut futhe until the eading on the dial of the cleaance adjustment gage becomes zeo in case the cleaance is aimed at μm. Once the eading on gage gets zeo, caefully swing the adjustment gage again to check that the measuement value is coect. Loosen the open/close bolt on the cleaance adjustment gage to expand the gage boe and emove the gage fom the inne ing. R Photo 6.7 Shaft nut (5) Detemination of space width The inne ing should now be in the position whee the eading on the dial of cleaance adjustment gage was zeo in step (4). By using a block gage, measue Fig. 6.24 Space width dimension 35

Technical Data (6) Assembly and check of the mounted olle outside diamete Inset a space of widthr. Then inset the inne ing and mounting space and tighten the shaft nut. Accoding to a pocedue simila to that in steps (3) "Setting up the mounted intenal cleaance gage on the main spindle" and (4) "Setup of inne ing cleaance", check the mounted olle outside diamete and the cleaance setting. Note this pocess is only a e-check pocedue, and may be omitted once the cleaance measuements fall in a smalle ange. Cleaance coection facto and mounted intenal cleaance eading (1) Cleaance coection facto Because of the stuctue of the NTN mounted intenal cleaance adjustment gage, the atio of the cleaance eading on location fo measuement to the eading on dial indicato is 1:2.5 (cleaance indication facto). The cleaance eading on the dial indicato is 2.5 times as lage as the emaining intenal cleaance. Fo efeence, a cleaance eading convesion table is given in Table 6.4. NOTE: Note that the cleaance coection facto of cetain beaing numbes is not 1:2.5. Coection facto is given on the table of inspection esults. (2) Remaining intenal cleaance (whee cleaance indication value 1:2.5) The eading on the dial indicato is conveted into a mounted intenal cleaance in the following manne: CASE 1: The eading elative to the zeo point is in the clockwise diection (CW) (Fig. 6.25). The value of the mounted intenal cleaance (+) is 1/2.5 times as lage as the eading on dial gage. Reading on dial gage in Fig. 6.25 = 2.5 Remaining intenal cleaance = 2.5/2.5 = (+)1μm CASE 2: The eading elative to the zeo point is in the counteclockwise diection (CCW) (Fig. 6.26). The value of the mounted intenal cleaance (-) is Table 6.4 Cleaance eading convesion table Fig.6.25 1/2.5 times as lage as the eading on dial gage. Reading on dial gage in Fig. 6.26 = 5. Remaining intenal cleaance = 5./2.5 = (-)2μm Setup of mounted intenal cleaance When setting the mounted intenal cleaance to a specific negative o positive value, the zeo point on dial indicato by a value [tageted cleaance multiplied by 2.5] may be shifted pio to the setup of the cleaance adjustment gage. (In case that the mounted cleaance value is divided by the coection facto, it is not necessay to the value [tageted cleaance multiplied by 2.5]) (2.5: cleaance coection facto) Fig. 6.27 Adjustment fo negative cleaance (emaining intenal cleaance: -.8 μm) Fig. 6.28 Adjustment fo positive cleaance (emaining intenal cleaance: +1. μm) Pecautions fo using and stoing the mounted intenal cleaance adjustment gage When using the mounted intenal cleaance adjustment gage, follow the pecautions descibed below: When tansfeing the oute ing aceway diamete measued with the cylinde gage to the mounted intenal cleaance adjustment gage, use the adjustment gage in a vetical attitude (Photo 6.8). When not using the mounted intenal cleaance adjustment gage, place it in a hoizontal attitude (Photo 6.9). Also, afte completion of cleaance measuing opeation, apply ust-peventive oil to the intenal cleaance adjustment gage and stoe in a dy location. Fig.6.26 Reading on dial gage (m).5 1. 1.5 2. 2.5 3. 3.5 4. 4.5 5. Remaining intenal cleaance on location fo measuement (m).2.4.6.8 1. 1.2 1.4 1.6 1.8 2. Reading on dial gage (m) 5.5 6. 6.5 7. 7.5 8. 8.5 9. 9.5 1. Remaining intenal cleaance on location fo measuement (m) 2.2 2.4 2.6 2.8 3. 3.2 3.4 3.6 3.8 4. Photo 6.8 Vetical stoage attitude Photo 6.9 Hoizontal stoage attitude 36

Technical Data 8 Tapeed boe cylindical olle beaing and main spindle tape angle In ode fo a pecision beaing to pefom as designed, it must be coectly mounted to a shaft and housing. In paticula, when employing a tapeed boe cylindical olle beaing, accuate finish fo the tapeed main spindle and appopiate fit between the beaing boe and the main spindle ae vey impotant to ensue high accuacy of the main spindle. NTN ecommends that the custome use the NTN tapeed shaft ing gage, which that is finished to same accuacies as the beaing, so that the custome can achieve highe pecision. NTN also offes a plug gage so that the custome can check the accuacy of the ing gage. Tape gage fo pecision olle beaings Each NTN pecision cylindical olle beaing tape gage consists of a female gage and a male gage (plug gage) (Fig. 6.29). Using blue paste o an equivalent as well as a ing gage, check the fit of the beaing boe with the main spindle tape. The coect fit between the main spindle and the beaing leads to highe accuacy of the main spindle. The plug gage is intended to check the accuacy of the associated ing gage. Use the plug gage to veify the tape accuacies of the associated ing gage (Fig. 6.3). d1 B Tape 1/12 Plug gage (TA) d D d1 Fig. 6.29 Tape gage B Tape 1/12 d Ring gage (TB) Usually, Using blue paste between the tapeed boe of a cylindical olle beaing and a plug gage exhibits a stong contact mak on the small diamete side as show in Fig. 6.31. This is because NTN has slightly adjusted the tape angle of the beaing boe to accommodate fo the diffeence in thickness of the inne ing below each ow of olles. Fig. 6.31 Checking main spindle tape with ing gage When checking the main spindle tape angle with a ing gage, pefom the following steps. Thooughly clean the suface of the ing gage, and apply a thin laye of blue paste to fou equally-spaced points. Clean the tapeed suface of the shaft, and gently inset into the ing gage. The ing gage to be lightly tuning it. Check the pattens of blue paste deposited on the shaft suface. At this point, attach a stip of clea adhesive tape onto each blue paste spot, and peel off each stip. Attach stips of adhesive tape onto white pape and check how much blue paste was deposited onto each point. Check that moe than 8% of the applied blue paste was deposited on the tapeed suface. Fig. 6.32 Application of blue paste to ing gage Fig. 6.3 Blue paste on tape gage Tape angle NTN machines the tapeed boe of its cylindical olle beaings and the tape angle of its tape gages accoding to the toleances below: Nominal tape angle 1/12 (4 46' 18.8") Toleance fo pecision olle beaing with 1/12 tape angle is +12"±12" (JIS class 4 and 2) Tageted toleance fo tape gage 1/12 is +9. Table 6.5 Examples of blue paste ecods Region A SmallLage Region B Region C Region D SmallLage SmallLage SmallLage Small: small diamete side Lage: lage diamete side Fig. 6.33 Regions subjected to measuement with blue paste 37

Technical Data 9 Running-in opeation fo main spindle beaings Run-in is impotant fo ensuing smooth opeation of gease-lubicated main spindle beaings. The following two modes of unning-in ae ecommended: (1) The beaing speed is gadually inceased in steps. Afte the tempeatue is satuated at each speed setting, the speed is inceased to the next step (Fig. 6.34). (2) The beaing is un fo one minute at aound the maximum opeating speed of the spindel. This cycle is epeated two o thee times (Fig. 6.35) as needed. (1) is the odinay method used, howeve it takes slightly longe to each the maximum opeating speed of the spindel. In contast, (2) can shoten the unning-in time, howeve highe isk of sudden beaing tempeatue incease is consideable, so that unning speed and its holding time must be set caefully. OR tempeatue OR tempeatue 4 35 3 25 2 6 Beaing Mounted peload Jacket cooling OR tempeatue Room tempeatue Speed 1 2 3 4 5 6 7 8 Timeh Beaing Mounted peload Jacket cooling 5S-76CDLLBDB355132 ows 18NFixed-position peload Yes 5S-2LA-BNS2LLBDB115242 ows 4kNConstant pessue peload Yes 16 12 8 4 12 5 1 4 8 3 6 2 OR tempeatue 4 1 Room tempeatue 2 Speed 1 2 3 4 5 Timeh Speedmin -1 Speedmin -1 Geneally, the tempeatue of a main spindle beaing is measued on the font cove. The tempeatue diffeence acoss the beaing oute ing and font cove eaches 2 to 3 C, and at the same time, the tempeatue diffeence between the hottest olling element and the inne ing aceway suface seems to each 5 to 1 C. Fo this eason, NTN ecommends that the machine is stopped if the tempeatue on font cove eaches appoximately 6 C. The machine should be allowed to cool off befoe the unning-in opeation is estated. OR tempeatue 7 6 5 4 3 2 1 Beaing NN32HSK11537 Mounted adial cleaance -5m Jacket cooling Yes 2 4 6 8 1 12 14 Timeh Fig. 6.34 OR tempeatue Room tempeatue Speed 6 5 4 3 2 1 Speedmin -1 Beaing NN32HSK11537 Mounted adial cleaance -5m Jacket cooling Yes 6 6 OR tempeatue 5 4 3 2 OR tempeatue 1 Room tempeatue Speed.5 1 1.5 2 Timeh 5 4 3 2 1 Speedmin -1 Fig. 6.35 38

Technical Data 7. Lubication of Beaings In a beaing, lubication foms a thin oil film on both olling and sliding sufaces to pevent metal-to-metal contact. The benefits of lubication can be summaized as follows: (1) Alleviation of fiction and wea (2) Removal of heat due to fiction (3) Longe beaing life (4) Rust pevention (5) Potection against contamination by foeign mateial high Tempeatue incease Tempeatue incease Oil volume Fig. 7.1 Fiction loss lage high Fiction loss To achieve the full lubicating effect, it is necessay to use a lubicating system suited to the opeating conditions, select a quality lubicant, emove dust fom the lubicant, and design an appopiate sealing stuctue to pevent contamination as well as lubicant leakage. The main spindle of a machine tool usually uses an extemely low volume of lubicant so heat geneation fom stiing of the lubicant is minimal. Fig. 7.1 summaizes the elationships between oil volume, fiction loss, and beaing tempeatue. The lubication methods available fo beaings in a machine tool include gease lubication, oil mist lubication, ai-oil lubication, and jet lubication. Each method has unique advantages. Theefoe, the lubicating system that best suits the lubication equiements should be used. Tables 7.1 and 7.2 summaize the featues of vaious lubication methods. Table 7.2 Evaluation of vaious lubicating systems Lubication method Citeion Gease lubication Oil mist lubication Ai-oil lubication Jet lubication Table 7.1 Oil volume, fiction loss and beaing tempeatue (Fig. 7.1) Zone Featues With an extemely low volume of oil, patial metal-to-metal contact occus between the olling elements and aceway suface, possibly leading to abnomal wea and beaing seizue. Typical lubication method Handling Reliability Tempeatue incease Cooling effect Sealing stuctue A unifom, uninteupted oil film is fomed. Fiction is minimal and beaing tempeatue is kept low. Gease lubication Oil mist lubication Ai-oil lubication Powe loss Even with a geate oil volume, heat geneation and cooling ae in balance. Ciculating lubication Envionmental contamination Allowable dmn value 1 1.41 6 2.21 6 2.51 6 4.1 6 Tempeatue incease is constant egadless of oil volume. Ciculating lubication LegendExcellentGoodFaiPoo 1The pemissible dmn values ae appoximate values: dmn: pitch cicle diamete acoss olling elements [mm] multiplied by speed [min -1 ] A futhe incease in oil volume contibutes to a significant cooling effect, and the beaing tempeatue dops. Foced ciculating lubication Jet lubication 39

Technical Data 1 Gease lubication Gease lubication is the most common, as it simplifies the main spindle stuctue moe than othe lubicating systems. With an adequate amount of quality gease pefilled, this system can be used ove a wide ange of speed. The allowable maximum speed vaies with the type and size of beaing: fo a highspeed angula contact ball beaing, the dmn value should be 1.4 1 6 as a guideline. Fo applications exceeding this ange, consult NTN Engineeing. Gease types A lithium-based gease, with a mineal oil base, is commonly used as a lubicant fo olling beaings. Its opeating tempeatue ange is -3 C to 13 C. When the tempeatue incease must be limited, as with the main spindle of a machine tool, NTN ecommends the use of a synthetic-oil-based gease (dieste, dieste+mineal oil) which penetation is NLGI gade 1 o 2. Table 7.3 lists technical data fo geases commonly used fo machine tool main spindles. Amount of gease equied Usually, a beaing fo the main spindle of a machine tool equies that gease volume be low so heat geneated by the stiing of the gease duing highspeed opeation is minimal. A guideline fo the amount of gease used fo a main spindle beaing is given below. Angula contact ball beaing (dmn value 65 1 3 ); 15% of beaing fee space (dmn value > 65 1 3 ); 12% of beaing fee space Cylindical olle beaing; 1% of beaing fee space Tapeed olle beaing; 15% of beaing fee space The space in the beaing typically used fo main spindles ae listed in dimension tables. Detemine a fill amount by efeing to the elevant dimension table. Befoe filling a beaing with gease, emove the ustpoof coating fom the beaing with clean wash oil and allow the beaing to dy completely. Then fill and unifomly distibute an appopiate amount of gease in the beaing with an syinge, plastic bag, etc. Table 7.3 Typical geases fo machine tool main spindle beaings Gease band SE-1 MP-1 ISOFLEX NBU15 Stabllugs NBU 8EP Multemp LRL3 Multemp PS2 ISOFLEX LDS18 Thickene Uea Ba complex soap Li soap Base oil Este Synthetic oil Este Mineal oil Synthetic oil Dieste+mineal oil Synthetic oil Base oil viscosity (4 C) mm 2 /S 22 4.6 2 15 37.3 15.3 16 Dopping point C 22 254 2 22 28 19 18 Opeating tempeatue ange C Application NTN gease code 512 Applied to ULTAGE Seies gease-lubicated sealed angula contact ball beaings L749 415 Applied to ULTAGE Seies gease-lubicated sealed angula contact ball beaings L448 613 Most commonly used fo main spindles 15K 3515 Suitable fo olle beaings subject to lage loads L135 415 Wide opeating tempeatue ange 12K 5513 Excellent low tempeatue and fiction chaactei- stics 1K 613 Suitable fo ball beaing 6K 4

Technical Data 2 Ai-oil lubication Ai-oil lubication (also known as oil-ai lubication o oil and ai lubication) is widely adopted fo main spindle beaings in ode to cope with the highe speed and pecision of machine tools and to ensue moe eliable lubication. Ai-oil lubication employs a method by which compessed ai is used to povide lubicating oil in pecisely contolled amounts. Geneally, an ai-oil lubication unit a volumetic piston-type distibuto that accuately metes the equied minimum amount of lubicating oil and povides it at optimal intevals contolled by a time. Special featues of ai-oil lubication Ai-oil lubication has the following advantages ove conventional oil mist lubication: Accuately supplies a minimal amount of oil. Can be adjusted to povide the pope amount of lubicant fo individual beaings. No limitations exist egading lubicant viscosity and exteme pessue additives. Compessed ai helps cool the beaing. Vaiations in the distance and height of lubication points do not affect lubication efficiency. Health hazads of oil mist ae minimized. Low oil consumption. Use of compessed ai can pevent contamination of the beaing by othe coolants. The ecommended oil viscosity is 1 to 32 mm 2 /s. Example of an ai-oil lubication unit Fig. 7.2 shows the stuctue of an ai-oil lubication unit. Ai Ai filte Solenoid valve (fo ai shut-off) Mist sepaato RV Ai-oil lubicating unit Pessue gauge Pump unit Pessue switch (ai) Pessue gauge Time Filte 1 Pessue switch (oil) Mixing valuve Oil/ai Oil Oil egulating valve Ai-oil lubication nozzle space Ai-oil lubication equies a specialized nozzle because it supplies the lubicating oil to the inside of the beaing by means of compessed ai. (Fig. 7.3) A nozzle with a hole diamete of 1. to 1.5 mm and a length 4 to 6 times the hole diamete is ecommended. Beaing Space with nozzle Fig. 7.3 Feed system fo ai-oil lubication Exhaust method fo ai-oil lubication Ai-oil lubication uses a lage volume of ai to feed lubicating oil to the beaing. Theefoe, it is essential that the ai fed into the beaing be allowed to escape. If the ai is not smoothly exhausted, the lubicating oil will emain in the beaing and possibly contibute to beaing seizue. In the design stage, emembe to allow ample space on the exhaust side of the beaing in ode to incease exhaust efficiency and povide a lage oil dain hole to ensue smooth aiflow. In addition, fo types that allow fo epositioning of the spindle, it is ecommended that the shoulde dimensions of all pats is designed to pevent lubicating oil fom flowing back into the beaing afte a change in the attitude of the main spindle. Unnecessay dimensional diffeences can also contibute to stagnancy of the lubicating oil. PSW Oil level switch Fig. 7.2 Ai-oil lubicating system 41

Technical Data Recommended tageted position with nozzle (1) Angula contact ball beaings Table 7.4 Ai-oil/oil mist nozzle space dimensions Note: Space dimensions ae the same fo all contact angles (15, 25 and 3 ). Table 7.5 Ai-oil/oil mist nozzle space dimensions Note: Space dimensions ae the same fo all contact angles (15, 2 and 25 ). Beaing No. A Oute diamete of Inne diamete of inne ing space oute ing space D E 79U 791U 792U 793U 794U 795U 796U 797U 798U 799U 791U 7911U 7912U 7913U 7914U 7915U 7916U 7917U 7918U 7919U 792U 7921U 7922U 7924U 7926U 7U 71U 72U 73U 74U 75U 76U 77U 78U 79U 71U 711U 712U 713U 714U 715U 716U 717U 718U 719U 72U 721U 722U 724U 726U 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 14.6 16.6 19.5 21.5 26.3 31.3 36.3 41.5 48.1 52.8 57.3 64.1 69.1 74.1 8.9 85.9 91.4 97.4 12.4 17.4 113.9 118.9 123.9 135.4 146.9 15.4 18.1 21.3 23.3 28.6 33.1 39.6 44.6 5.4 55.9 6.9 67.4 72.4 77.4 83.9 88.9 95.4 1.4 16.9 111.9 116.9 123.4 129.9 139.9 153.9 12.4 14.4 17.2 19.2 24 29 34 39.2 45.8 5.5 54.3 61.1 66.1 71.1 77.9 82.9 88.4 94.4 99.4 14.4 11 115 12 132 143 13.1 15.8 19 21 25.8 3.5 36.5 41 47 52 57 63 68 73 78 83 9 95 11 16 112 117 122 133 143 13.4 15.4 18.2 2.2 25 3 35 4.2 46.8 51.5 55.8 62.6 67.6 72.6 79.4 84.4 89.9 95.9 1.9 15.9 112 117 122 134 145 14.1 16.8 2 22 26.8 31.5 37.5 42 48 54 59 65 7 75 8 85 92 97 13 18 114 12 125 136 146 18.5 2.5 25 27 32.5 37.5 42.5 5.5 56.5 63 67.5 73.5 78.5 84 93 97.5 13 112 117 122 131 136 141 155 169 22 24.5 27.5 31 37.5 41.5 49.5 56 61.5 67.5 72.5 82 87 92 11 16 115 12 129 134 139 148 157 167 184 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Beaing No. HSE91U HSE911U HSE912U HSE913U HSE914U HSE915U HSE916U HSE917U HSE918U HSE919U HSE92U HSE921U HSE922U HSE924U HSE926U HSE928U HSE93U HSE932U HSE934U HSE1 HSE11 HSE12 HSE13 HSE14 HSE15 HSE16 HSE17 HSE18 HSE19 HSE2 HSE21 HSE22 HSE24 HSE26 HSE28 HSE3 HSE32 HSE34 A Oute diamete of Inne diamete of inne ing space oute ing space D E 15 58.9 55 56 67 1.5 15 64.8 61 62 74 1.5 15 69.8 66 67 79 1.5 15 74.8 71 72 84 1.5 15 81.6 77 79 93 1.5 15 86.6 82 84 98 1.5 15 91.6 87 89 13 1.5 15 98.1 93 95 112 1.5 15 13.1 98 1 117 1.5 15 18.1 13 15 122 1.5 15 115.3 19 111 131 1.5 15 12.3 114 116 136 1.5 15 125.3 119 121 141 1.5 15 136.9 13 132 155 1.5 15 148.4 141 143 169 1.5 15 158.4 151 153 179 1.5 15 172.1 164 166 196 1.5 15 182.1 174 176 26 1.5 15 192.1 184 186 216 1.5 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 61.6 69.7 74.7 79.7 86.9 91.9 99.2 14.2 111.4 116.4 121.4 128.7 135.2 145.2 158.5 17.8 181.5 193.2 27.8 57 63 68 73 76 83 9 95 11 16 112 117 122 133 143 153 165 175 185 59 65 7 75 8 85 92 97 13 18 114 119 126 136 149 16 171 183 197 73 82 87 92 11 16 115 12 129 134 138 148 158 167 187 197 21 225 245 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 42

Technical Data E A D Fig. 7.4 7U, HSE, BNT and HTA types Table 7.6 Ai-oil/oil mist nozzle space dimensions Table 7.7 Ai-oil/oil mist nozzle space dimensions Note: Space dimensions ae the same fo all contact angles (3 and 4 ). Beaing No. BNT9 BNT91 BNT92 BNT93 BNT94 BNT95 BNT96 BNT97 BNT98 BNT99 BNT BNT1 BNT2 BNT3 BNT4 BNT5 BNT6 BNT7 BNT8 BNT9 BNT2 BNT21 BNT22 BNT23 BNT24 BNT25 BNT26 BNT27 BNT28 BNT29 A Oute diamete of Inne diamete of inne ing space oute ing space D E 12 12 12 12 12 12 12 12 12 12 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 14.3 16.3 19.2 21.2 26 31 35.8 41.1 47.1 52.3 15.1 17.7 21 22.9 28.1 32.6 39.1 44 49.8 55.2 17.5 18.9 21.4 24.6 3 34.8 4.9 46.6 52.5 56.9 12.2 14.2 17.1 19.1 23.5 28.5 33.5 38.5 44.4 49 13 15.6 18.6 2.6 25 3.5 35.5 41 47 52 15.4 16.8 19.3 22 26.5 32 37.5 43.5 49 54.5 13.2 15.2 18.1 2.1 24.5 29.5 34.5 39.5 45.4 5 14 16.6 19.6 21.6 26 31.5 36.5 42 48 53 16.4 17.8 2.3 23 27.5 33 38.5 44.5 5 55.5 18.5 2.5 24 26 32.5 37.5 42.5 5 56 61.5 22 24 28 3 37 41.5 49.5 56 61 68 24.5 26.5 29 34 4.5 45.5 54.5 64 71.5 76.5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Beaing No. HTA92 HTA921 HTA922 HTA924 HTA926 HTA928 HTA93 HTA932 HTA934 HTA936 HTA938 HTA94 HTA6 HTA7 HTA8 HTA9 HTA1 HTA11 HTA12 HTA13 HTA14 HTA15 HTA16 HTA17 HTA18 HTA19 HTA2 HTA21 HTA22 HTA24 HTA26 HTA28 HTA3 HTA32 HTA34 A Oute diamete of Inne diamete of inne ing space oute ing space D E 15 15 15 15 15 15 15 15 15 15 15 15 116.4 121.4 126.4 138.7 151 161 174.9 184.9 194.9 28.1 218.1 232.5 11 115 12 132 143 153 165 175 185 197 28 22 112 117 122 134 145 155 167 177 187 199 21 222 13 135 14 153 167 177 195 25 215 233 242 26 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 15 39.5 35.5 36.5 49.5 1 15 44.3 41 42 56 1 15 49.9 47 48 61 1 15 56.1 52 53 68 1 15 61.1 57 59 73 1.5 15 69.3 63 65 82 1.5 15 74.3 68 7 87 1.5 15 79.3 73 75 92 1.5 15 86.4 78 8 11 1.5 15 91.4 83 85 16 1.5 15 98.7 9 92 115 1.5 15 13.7 95 97 12 1.5 15 111 11 13 129 1.5 15 116 16 18 134 1.5 15 121 112 114 138 1.5 15 128.4 117 119 148 1.5 15 134.9 122 126 158 1.5 15 144.9 133 136 167 1.5 15 158.1 143 149 187 1.5 15 17.4 153 16 197 1.5 15 181.2 165 171 21 1.5 15 192.7 175 183 225 1.5 15 27.4 185 197 245 1.5 43

Technical Data (a) When lubicant is supplied between the cage and inne ing E (b) When lubicant is supplied between the cage and oute ing E A D C B D Fig. 7.5 78C, 79C, 7C and 72C types Table 7.8 Ai-oil/oil mist nozzle space dimensions Beaing No. 785C 786C 787C 788C 789C 781C 7811C 7812C 7813C 7814C 7815C 7816C 7817C 7818C 7819C 782C 7821C 7822C 7824C 7826CT1 7828CT1 783CT1 7832CT1 7834CT1 (b) When lubicant is supplied between the cage and oute ing B C Oute diamete of inne ing space Inne diamete of oute ing space D E 32.6 37.6 42.6 47.8 53.2 59.5 66.2 71.7 77.7 82.4 87.8 92.5 11 16 111 115.6 12.7 129.2 139.2 152.3 162.3 175.3 185.5 198.7 33.3 38.2 43.1 48.4 54.3 6.2 67.4 72.8 78.7 83.6 88.8 93.6 12.5 17.3 112.4 117 122 131.1 141.1 154.5 164.5 177.8 188 21.5 28 33 38 43 48.5 54 59 64.5 7.5 75.5 8.5 85.5 91.5 96.5 11.5 16.5 111.5 117.5 127.5 139 149 16.5 17.5 181 29 34 39 44 49.5 55 61 66.5 72.5 77.5 82.5 87.5 93.5 98.5 14 11 115 122 132 144 155 167.5 177.5 188 34 39 44 49 54 6.5 68 73.5 79.5 84.5 89.5 94.5 13.5 18.5 113.5 118.5 123.5 132.5 142.5 156.5 166.5 18.5 19.5 24.5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5 1.5 7928CT1B 793CT1B 7932CT1B 7934CT1B 171.3 187.2 198.3 28.2 176.9 193.8 21.9 211.9 153 165 175 185 163 179 19 2 179 197 25 215 1.5 1.5 1.5 1.5 44

Technical Data 785C 7834CT1,7928CT1B 7934CT1B,72C 7218C B is ecommended. 728CT1B 74CT1B,7219C 7226C A is ecommended. If tageting at A is impossible, B is acceptable. If both A and B ae impossible, tageting fom C is acceptable. Table 7.9 Ai-oil/oil mist nozzle space dimensions Beaing No. 72C 721C 722C 723C 724C 725C 726C 727C 728C 729C 721C 7211C 7212C 7213C 7214C 7215C 7216C 7217C 7218C 7219C 722C 7221C 7222C 7224C 7226C (a) When lubicant is supplied between the cage and inne ing (b) When lubicant is supplied between the cage and oute ing Common to (a) & (b) Oute diamete of Inne diamete of Oute diamete of Inne diamete of A inne ing space oute ing space B C inne ing space oute ing space D E 119.4 126.1 131.6 138.3 149.3 161.3 111.5 117.5 122.5 129 141 152.5 113.5 12 125 131 143 155 23 24.9 28.3 32.4 38.4 43.3 51.1 59.1 65.9 71.3 76.4 84.6 94.4 1.8 16.2 112.2 119.5 128 136.2 144.4 152.7 159.9 168.5 181.5 193 23.8 25.8 29.4 33.7 4.2 44.7 53 61.2 68.3 73.8 78.8 87.4 97.5 14.1 19.6 115.6 123.2 131.8 14.4 149 157.7 165.1 174.1 187.2 199.2 15.5 17.5 2.5 23.5 26.5 32 37.5 43.5 49 54.5 59.5 66 72 77.5 83 88.5 94 1 16 111.5 117.5 122.5 129 141 152.5 17.5 19.5 22.5 26.5 31 36 44 52 58 63 68 76 85 92 96 12 19 117 125 132 141 148 157 169 181 25 27 3 35 41.5 46.5 54.5 64 71.5 76.5 81 9 99.5 18.5 114 118 127 136 146 155 164 173.5 182 196 21 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 728CT1B 73CT1B 732CT1B 734CT1B 736CT1B 738CT1B 74CT1B 162.9 174.4 185.7 199.2 212.2 222.2 235.2 153 165 175 185 197 21 22 157 169 18 193 26 216 229 183.5 196.6 29.8 226 242 252 268 187.4 2.9 214.2 231.3 248 258 275 153 165 175 185 197 21 22 172 185 198 214 23 24 255 197 21 225 245 263 27 29 1.5 1.5 1.5 1.5 1.5 1.5 1.5 45

Technical Data (2) Cylindical olle beaings E E E 1 C D B D A D Fig. 7.6 NN3 and NN3T6 types Fig. 7.7 N1HS type Table 7.1 Table 7.11 Oute diamete of Inne diamete of Beaing No. C inne ing space oute ing space D E NN35 NN36 NN37 NN38 NN39 NN31 NN311 NN312 NN313 NN314 NN315 NN316 NN317 NN318 NN319 NN32 NN321 NN322 NN324 NN326 NN328 NN33 NN332 NN334 NN336 NN338 4.3 47 53.5 59.5 66 71 79 84 9 (89) 98 13 111 116 125 13 135 144 (143) 153 (152) 163 (162) 179 189 22 215.5 232 251 261 31 38 43 48 54 59 65 7 75 82 87 93 98 15 11 115 12 127 137 15 16 172 183 196 29 219 33.8 4.5 47. 53. 59.5 64.5 72.5 77.5 82.5 9 95 13 18 117 122 127 135 144 154 171 181 194 28 224 243 253 42 5 57 63 69 74 83 88 93 12 17 115 12 13 135 14 149 158 168 185 195 21 223 24 259 269 1 1 1 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 NOTE) With cetain poducts, the dimension C of L1 cage diffes fom that of T6 cage. The values in paentheses ( ) ae dimensions C of L1 cages. Othe dimensions of L1 cages ae same as those of T6 cages. Beaing No. N16HS N17HS N18HS N19HS N11HS N111HS N112HS N113HS N114HS N115HS N116HS N117HS N118HS N119HS N12HS N121HS N122HS N124HS N126HS N128HS N13HS N132HS A B Oute diamete of Inne diamete of inne ing space oute ing space D E 86 91 97.5 12.5 11 115 12 125.9 133.1 143.3 157.2 167.2 179.6 191.1 4.4 46.5 51.7 57.7 62.7 69.7 74.8 79.7 37 42 47 52 57 63.5 68.5 73.5 78.5 83.5 88.5 93.5 12 17 112 118 123 133 143 153 165 175 38 43 48 53 58 64.5 69.5 74.5 8.5 85.5 9.5 95.5 14 19 114 12 125 135 145 155 167 177 5 57 63 69 74 83 88 93 12 17 115 12 13 135 14 149 158 168 185 195 21 223 1 1 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 E A D Fig. 7.8 N1HSR type Table 7.12 Beaing No. N111 HSRT6 N112 HSRT6 N113 HSRT6 N114 HSRT6 N116 HSRT6 N118 HSRT6 N12 HSRT6 A Oute diamete of Inne diamete of inne ing space oute ing space D E 71.5 76.6 81.5 89.7 11.3 113.8 123.8 63.5 68.5 73.5 78.5 88.5 12 112 64.5 69.5 74.5 8.5 9.5 14 114 83 88 93 12 115 13 14 1.5 1.5 1.5 1.5 1.5 1.5 1.5 46

Technical Data 3 Jet lubication With this lubicating system, a high-speed jet of lubicant is injected into the beaing fom the side. This is the most eliable lubicating technique and is typically used on the main spindle beaings of jet engines and gas tubines. It is cuently capable of a dmn value of up to appoximately 4. 1 6. When used as a lubicating system fo the main spindle of a machine tool, it can minimize the tempeatue incease of the beaing. Howeve, the esultant toque loss is geat, as a lage amount of oil is supplied to each beaing. Theefoe, this aangement equies a poweful moto to dive the main spindle. Low viscosity oil (2-3 mm 2 /s) is used. Fig. 7.9 shows examples of the tempeatue incease with ai-oil lubication and jet lubication, while Fig. 7.1 gaphically plots test esults of powe loss. Beaing : 2LA-HSE2, boe 1 mm, outside diamete 15 mm Rolling element : Beaing steel Beaing : 2LA-HSE2, boe 1 mm, outside diamete 15 mm Rolling element : Beaing steel Tempeatue incease on oute ing C 6 5 4 3 2 1 Ai-oil (Oil volume:.3 ml/min, ai: 75 NL/min) Jet (Oil volume: 3.1L/min) Powe loss kw / beaing 4 3 2 1 5 1 15 2 Speed min -1 Jet (Oil volume: 3.1L/min) Ai-oil (Oil volume:.3 ml/min ai: 75 NL/min) 1.25 2.5 5 1 15 2 Speed min -1 1.25 2.5 dmn value 1 6 Fig. 7.1 Compaison of powe loss with ai-oil lubication and with jet lubication dmn value 1 6 Fig. 7.9 Compaison of tempeatue incease of oute ing with ai-oil lubication and jet lubication (The tempeatue incease with ai-oil lubication is elative to oom tempeatue; the tempeatue with jet lubication is elative to lubicant tempeatue.) 47

Technical Data 8. New Technologies 1 The new ULTAGE Seies of supehigh-speed pecision beaings fo machine tool main spindles NTN has esponded to need fo impoved efficiency, eliability, quality and envionmental esponsibility fo machine tools by developing the ULTAGE Seies of supe-high-speed pecision beaings. This new line of beaings demonstates excellent pefomance thanks to the optimal intenal design; a new appoach to suface quality; and the use of special mateials, special gease, and seals on both sides. "ULTAGE" is a new wod coined by combining Ultimate and Stage to stand fo NTN s wish to ealize the ultimate level of pecision beaing design. Fom low-speed heavy-duty machining to high-speed light -duty machining Impoved duability 2 New mateial and new suface modification technology The ULTAGE supe high-speed pecision beaing seies fo machine tool main spindles employs a special mateial that boasts excellent anti-seizue popeties and wea esistance, as well as a unique suface modification technique. Life unde nomal tempeatues The test esults obtained fom point contact test pieces unde geate loading ae gaphically plotted in Fig. 8.1. Test conditions Test piece Ball Max. contact stess Loading fequency Lubicant 1222 mm cylindical olle 19.53/4" 5.88 GPa 46,24 cycles/min Tubine VG56 (oil bath) Schematic of test ig Ball Impoved oundness with wok pieces Meets ISO 141 Test piece Concept Ou ideal is to offe a supe high-speed pecision beaing that offes excellent eliability while emaining eco-fiendly. Design The intenal beaing design has been optimized to cope with vaying applications and opeating conditions in ode to ealize high speed and high igidity, limited tempeatue incease, high pecision, enegy saving and low noise emission. It pefoms optimally in a vaiety of situations. Mateial Adoption of special mateial and a special suface modification technique has esulted in geatly enhanced eliability. Lubication Use of unique eco-conscious technology and special gease contibutes to deceased pollution and enhanced enegy savings. Pecision Ou supe high-pecision technology, in conjunction with ou poven pecision beaing technology, will help attain futhe impoved pecision. Cumulative pobability of failue (%) 99 8 5 2 1 5 SUJ2 Special mateial No flaking 1 1 7 1 8 1 9 1 1 SUJ2 Special mateial LifeLoading Cycle L1 (1 7 cycles) 6.3 79.8 Life atio 1 12.7 The olling fatigue life of the special mateial is appoximately 13 times as long as that of SUJ2. Fig. 8.1 Life test esults with point contact test pieces 48

Technical Data Life unde high tempeatue The test esults obtained fom thust-type test pieces at 2 C ae gaphically plotted in Fig. 8.2. Impoved wea esistance Test esults with a Sawin type fiction and wea test machine ae illustated in Fig. 8.3. Test conditions Test piece Ball Max. contact stess Loading fequency Oil tempeatue Lubicant Schematic of test ig 4729t7 flat plate 6.351/4"Ceamic ball 5.5 GPa 3, cycles/min 2 C Ethe-based oil Test conditions Speed Peipheal speed Test duation Max. contact stess Lubicant Rotating test piece Fixed test piece 4775 min -1 1 m/s 1 min 2. GPa VG2 Mateial being tested Si3N4 Schematic of test ig Rotating test piece Fixed test piece Special mateial 231-6 mm 3 Ceamic ball SUJ2 1441-6 mm 3 Cumulative pobability of failue (%) 99 8 5 2 1 5 SUJ2 Special mateial No flaking 1 1 5 1 6 1 7 1 8 SUJ2 Special mateial Life (loading cycles) L1 (1 5 cycles) 9.1 No flaking Test piece (flat plate) Life atio 1 3 Amount of wea The wea esistance of the special mateial is 6 times bette than that with SUJ2. Fig. 8.3 Test esults with Sawin type fiction and wea test machine Impoved anti-seizue popety Test esults with a two olle testing machine ae illustated in Fig. 8.4. Test conditions Diving side speed 2 min -1 Diven side speed 12 min -1 Sliding velocity 1.1 m/s Max. contact stess 2.9 GPa Lubicant VG2 Diving olle Mateial being tested Diven olle Mateial being tested Schematic of test ig Diven olle Diving olle The olling fatigue life of the special mateial at a high tempeatue of 2 C is moe than 3 times as long as that of SUJ2. Special mateial 3 min o longe Fig. 8.2 High tempeatue life test esults with thusttype test pieces SUJ2 2min Duation The anti-seizue popety of the special mateial is moe than 15 times bette than as that with SUJ2. Fig. 8.4 Test esults with a two olle testing machine 49

Technical Data Adoption of ceamic balls A compaison of tempeatue incease, which can vay depending on the mateial of olling element, is illustated in Fig. 8.5. Test conditions Test beaing Peload Lubication Oute casing cooling Basic beaing numbe HSE2 115242 ows) 2.5 kn (constant pessue peloading) Gease None 3 Envionmentally conscious technology The eco-fiendly ULTAGE Seies is available in two specifications: an eco-fiendly ai-oil lubication design that offes enegy savings by educing ai and oil consumptions; and a gease-lubicated, sealed design that educes envionmental impact by employing a gease lubication system that is capable of highespeed opeation. Tempeatue incease of oute ing C 4 3 2 1 5 1 15 Shaft speedmin -1.5 1 1.5 1.9 dmn value1 6 Steel balls Ceamic balls Requied functions fo the main spindle beaing Speed Rigidity Duability Pecision Fo main spindles Eco-fiendly ai-oil lubication Eco-fiendly design The ULTAGE seies beaings employ well-poven ceamic balls to efficiently limit tempeatue incease. HSL type N1HSL type Fig. 8.5 Compaison of tempeatue incease with steel and ceamic olling elements Reduced ai/oil consumption contibutes to enegy savings. High-speed BNS LLB type Gease lubication Standad 7/79AD, CD LLB type N1HSRT6 type Sealed Sealed The intoduction of a gease lubication system that is capable of high-speed opeation educes the envionmental impact. Fo ball scew suppot Gease lubication 2A-BST LXL type 2A-BST type Sealed Combines duability with ease of handling. Duability 5

Technical Data Gease-lubicated sealed angula contact ball beaings (1) Ease of handling ULTAGE angula contact ball beaings with seals ae gease-pefilled beaings. No gease filling is necessay; you need only wipe off the ust-peventive oil befoe assembly. Seals of diffeent colos ae employed to diffeentiate the font and back. The black font face and oange back face ae easily identified, which also makes it easy to oient the beaings in combinations (Table 8.1). Table 8.1 Beaing combinations and seal colos DB set (back-to-back) DF set (face-to-face) Oange seal Oange seal Black seal Black seal (2) Suggestions fo simplified spindle stuctue The ULTAGE Seies sealed angula contact ball beaing makes possible high-speed opeation with gease lubication thanks to optimized intenal design. Gease lubication with minimal mist splash simplifies main spindle stuctue and contibutes to lowe envionmental impact as well as cost eduction (Fig. 8.6). Ai-oil lubication Gease lubication Simplifies the main spindle stuctue and educes both the initial cost and opeating cost. Fig. 8.6 Alteation to lubication system (ai-oil lubication to gease lubication) 51

Technical Data Eco-fiendly ai-oil lubicated angula contact ball beaings and cylindical olle beaings When combined with the eco-fiendly nozzle, the ecofiendly ai-oil lubicated angula contact ball beaing (HSL/HSFL Seies) o cylindical olle beaing (N1HSL[K] Seies) can educe the emissions of oil mist and noise. (1) Reduction of oil mist The eco-fiendly ai-oil lubicated beaing does not spay compessed ai fom the nozzle; instead, it uses the centifugal foce of the otating inne ing to supply lubicating oil into the beaing. Fo this eason, this type of beaing conseves both ai and oil. In addition, it educes the amount of oil mist emitted fom the labyinth seal of the spindle. The following photogaphs eveal the diffeence between the amount of oil mist emitted fom the conventional standad beaing and that emitted fom the eco-fiendly beaing. The lubicating oil dischaged with ai passes though the inside of the beaing and is then exhausted as a lage volume of mist. The lubicating oil exhausted fom the beaing in the mist state is collected though the dischage pot of the main spindle housing, but some of the oil mist leaks fom the main spindle labyinth seal and contaminates the immediate envionment aound the machine. Adoption of the eco-fiendly beaing theefoe impoves the woking envionment. Standad beaing Eco-fiendly beaing design Standad nozzle Ai-oil Ai-oil Eco-fiendly nozzle Lubicating oil supplied with a lage quantity of ai 2LA-HSE type A small amount of lubicanting oil is supplied 2LA-HSL Type Lubicating oil supplied though centifugal foce Conventional beaings consume a geat deal of ai when supplying lubicating oil to the beaing. The eco-fiendly type uses centifugal foce to supply lubicating oil into the beaing. Standad beaing Eco-fiendly beaing design Inne ing Atomized when emitted fom the nozzle The oil emitted fom the nozzle is in a liquid state. Standad beaing Eco-fiendly beaing design A lage amount of oil mist passes though the beaing, contaminating the woking envionment. The amount of oil mist is educed, minimizing envionmental contamination in wok aeas. 52

Technical Data (2) Noise Reduction The standad ai-oil lubication method uses ai to supply a slight amount of oil. It also uses a special nozzle space, as shown in Figs. 8.7 and 8.9. In addition, this method uses a nozzle measuing 1 to 1.5 mm in diamete to supply oil to the aceway suface of the beaing at the ate of 3 to 4 NL/min/beaing. To supply this oil, the nozzle emits compessed ai as a jet to beak the ai baie of the beaing, which is ceated when unning at high speed. In this way, the ai is used as a tool fo supplying oil. The eco-fiendly beaing developed by NTN educes the amount of ai consumed, thus educing the whistling noise of the flowing ai. The mechanism used in this type of beaing is as follows: the centifugal foce of the beaing inne ing feeds a small amount of oil fom the nozzle to the aceway suface of the beaing along the tapeed suface. (Figs. 8.8 and 8.1). Ai-oil Fig. 8.7 Standad nozzle Ai-oil Eco-fiendly nozzle Intenal specification of HSE type Eco-fiendly specification Since the function of the compessed ai is only to delive lubicating oil to the cavity of the inne ing, a lage quantity of ai is not equied. In addition, since the ai used to supply the oil is eleased between the tapeed sufaces, the whistling noise of ai is also educed. When the eco-fiendly beaing is employed, the noise is educed by 6 to 8 dba. Example: In the high-speed egion in excess of 1, min -1, noise is educed by 6 to 8 dba (Fig. 8.11). Test conditions Test beaing Shaft speed Peload Noise valuedba 12 11 1 9 8 7 6 HSFL type HSF type 5S-2LA-HSFL2 (eco-fiendly beaing) 5S-2LA-HSF2 (115242 ows) 2, min -1 2.5 kn (constant pessue peloading) 5 1 15 2 Shaft speedmin -1.5 1. 1.5 2. 2.5 dmn value1 6 Fig. 8.11 Compaison of noise values Fig. 8.8 Eco-fiendly type nozzle Ai-oil Fig. 8.9 Cuent beaing N1HS type The eco-fiendly beaing is paticulaly good fo educing sceeching noise. The high-fequency component of the noise geneated at high speeds is well attenuated. The eason fo this is as follows: when the ai jet emitted fom the standad nozzle hits the olling elements, a high-pitched noise is geneated; in contast, the eco-fiendly nozzle does not emit ai on the olling elements, which educes sceeching noise. Ai-oil Eco-fiendly nozzle Intenal specification of N1HSR type Eco-fiendly specification 14 MAG dbv 2 db/ -46 45 Hz Beaing5S-HSC2 Numbe of balls37 Shaft speed14, min -1 PWR SP A han LIN 1kH Fig. 8.1 ULTAGE N1HSL type Fig. 8.12 Fequency chaacteistics of beaing noise (standad nozzle) 53

54 NTN Main Spindle Beaings

NTN Main Spindle Beaings Main Spindle Beaings 9. Angula Contact Ball Beaings fo Radial Loads CONTENTS 9. Angula Contact Ball Beaings fo Radial Loads 56 27 q Featues of vaious types 56 w Standad cage design 58 e Beaing designations 58 Beaing accuacy 6 t Intenal cleaance and standad peload of duplex angula contact ball beaings 62 y Recommended fit fo angula contact ball beaings 68 u Duplex angula contact ball beaings 68 i Duplex aangement codes of duplex angula contact ball beaings 69 o Flush ginding and univesal matching 69! Angula contact ball beaings with ceamic balls 7!1 Opeating life of beaings with ceamic balls 71!2 Recommended lubication specifications 72!3 Standad angula contact ball beaings 79U and 7U types 73!4 High-speed angula contact ball beaings HSE type 74!5 Supe high-speed angula contact ball beaings HSF type 75!6 Eco-fiendly ai-oil lubicated angula contact ball beaings HSL type HSFL type 76!7 Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing - HSEW Type 78!8 Gease-lubicated sealed standad angula contact ball beaings 79LLB/7LLB types, 5S-79LLB/7LLB types 8!9 Gease-lubicated sealed angula contact ball beaings BNS type 5S-BNS type 82 @ Dimension table Standad angula contact ball beaing 84 High-speed angula contact ball beaings 112 Supe high-speed angula contact ball beaings 136 Eco-fiendly high-speed angula contact ball beaings 138 Eco-fiendly supe high-speed angula contact ball beaings 146 Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing-hsew Type 148 Gease-lubicated sealed standad angula contact ball beaings 156 Gease-lubicated sealed high-speed angula contact ball beaings 172 Angula contact ball beaings fo motos and lathes 196 55

NTN Main Spindle Beaings 9. Angula Contact Ball Beaings fo Radial Loads Angula contact ball beaings fo adial loads used in machine tools ae beaings which inne and oute ings cannot be sepaated. This type of beaing includes seies 78, 79U, 7U, 72, HSE9, HSE, BNS9, BNS, BNT9, BNT and BNT2. Fo angula contact ball beaings, an imaginay staight line connecting the contact points between the balls and inne and oute ings foms an angle with the adial axis. The optimal contact angle can be selected to meet functional equiements such as high speed o high igidity. The available contact angles ae 15 (contact angle symbol "C"), 2 (no symbol), 25 ("AD"), and 3 (no symbol). (Fig. 9.1) Contact angle Fig. 9.1 Contact angle 1 Featues of vaious types Open beaings Standad angula contact ball beaings (78, 79, 7 and 72 Types) Standad angula contact ball beaings ae available in fou types: 78, 79, 7 and 72. Types 79 and 7 include the 79U and 7U ULTAGE Seies, which accommodate high speed and low tempeatue ise with optimized specifications of the intenal design. Fo these types, thee contact angles ae available: 15 (contact angle symbol "C"), 25 ("AD"), and 3 (no symbol). The contact angle of 25, howeve, is also available with 79U and 7U types. This beaing seies has an accuacy of JIS class 5 o bette. The featues include high speed, high igidity, and high load capacity. Some models incopoate ceamic balls. 72C 7UC 79UC 78C Fig. 9 2. Standad angula contact ball beaings suface of the inne ing and the boe of the oute ing ae elieved on one side, and this beaing seies employs an ai-oil lubication system to ensue smooth oil flow. In addition, it employs special mateials, and its suface is modified to potect the beaing fom wea and seizue moe positively. The HSE type beaing is available with eithe steel balls o ceamic balls. Ulta-high-speed angula ceamic ball beaings (HSF type) The HSF type ulta-high-speed angula contact ceamic ball beaing employs smalle balls than the HSEC type to ensue igidity and pevent tempeatue ise. In addition, it employs a contact angle of 25 to accommodate the eduction in contact angle caused by centifugal foce duing opeation. These featues allow the use of an ai-oil lubication system (dmn value <2.6 1 6 ) in a speed egion that was peviously possible only with a conventional jet lubication system. High-speed angula contact ball beaings (HSE type) High-speed angula contact beaings ae available in two types: HSE9 and HSE. The bounday dimensions of this beaing seies ae detemined accoding to the JIS dimension seies (9, ), and thee types of contact angles ae available: 15 (contact angle symbol "C"), 2 (no symbol), and 25 ("D"). The accuacy of this ball beaing seies is JIS class 5 o bette, and the ball diamete is smalle than that of the standad angula contact ball beaing in ode to accommodate high speeds. The oute HSEC HSE9C Fig. 9.3 High-speed angula contact ball beaings Fig. 9.4 Ulta-high-speed angula contact ball beaings Eco-fiendly ai-oil lubicated angula ball beaings (HSL and HSFL types) Fo eco-fiendly ai-oil lubicated angula contact ball beaings (HSL and HSFL types), the angle of the inne ing oute suface (counteboe aea) is optimized compaed with that of HSE and HSF types. In addition, these angula contact ball beaings ae dedicated to aioil lubication by adopting a cicumfeential goove and an eco-fiendly nozzle. They accommodate the same high speed as HSE and HSF types while being moe eco-fiendly. They geneate less noise and conseve enegy since they consume less ai and oil. The 56

NTN Main Spindle Beaings accuacies of these beaing types ae JIS class 5 o bette. Fo the HSL type, thee contact angles [2 (no symbol), and 25 ("AD")] ae available. Fo the HSFL type, howeve, only one contact angle (25 ) is available. The HSFL type utilizes a specially designed eco-fiendly nozzle. HSL type HSFL type Fig. 9.5 Eco-fiendly angula contact ball beaings Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing (HSEW type) HSEW type is designed based on HSE type as high speed angula contact ball beaing fo ai-oil lubication with lubication hole on oute ing. Spaces next to these beaings don't need length fo nozzle to be mounted, and can be shot. These shot spaces have an effect on compact design and igidity of spindle as a esult of shotened distance between beaing and tool. In addition, diect ai-oil supply though the hole on oute ing achieves impoved lubicating eliability with low ai flow ate and small oil consumption. JIS Class 5 o highe beaing accuacy is applied on this type. Two kind of contact angles ae available, 2 (no suffix) and 25 (AD). Fig. 9.6 Ulta-high-speed angula contact ball beaings High-speed angula contact ball beaings fo ginding machines/motos (BNT type) The bounday dimensions of high-speed angula ball beaings fo ginding machines/motos (BNT type) ae detemined accoding to the JIS dimension seies (9,, 2). Fo this beaing type, only one contact angle (15, no symbol) is available, and the beaing accuacies ae JIS class 5 o bette. This beaing uses mainly ai-oil lubication and oil mist lubication. The featues of this beaing ae high speed capability and high load capacity. This type of beaing is available with eithe steel balls o ceamic balls. Sealed beaings Standad gease-lubicated sealed angula contact ball beaings (79LLB/7LLB types) The standad gease-lubicated sealed angula contact ball beaings ae available in 79 and 7 seies. Non-contact ubbe seals ae mounted on both sides and special gease is used. As a esult, these beaings accommodate high speed, offe polonged sevice life, and help to maintain a comfotable woking envionment. These beaings ae available in contact angles of 15 (contact angle symbol "CD") and 25 ("AD") and with a special accuacy of P42 (JIS class 4 dimensional accuacy and JIS class 2 unning accuacy). Since they ae pefilled with gease, these beaings equie no cleaning befoe use and ae theefoe easy to handle. They ae available with eithe steel balls o ceamic balls. Back side Fig. 9.8 Standad gease-lubicated sealed angula contact ball beaings High-speed gease-lubicated sealed angula contact ball beaings (BNS type) High-speed gease-lubicated sealed angula contact ball beaings (BNS type) ae available with the bounday dimensions of HSE type. Non-contact ubbe seals ae incopoated on both sides and its inne stuctue is optimized. It is also pefilled with a special gease to achieve high speed capability, inhibit tempeatue ise, extend sevice life and ceate a comfotable woking envionment. This beaing type is available in contact angles of 15 (contact angle symbol "CD"), 2 (no symbol), and 25 ("AD"). Beaing accuacy is JIS class 4 o bette. The beaing ing is made of a special mateial, and the suface is modified to potect the beaing fom wea and seizue. Since this type is pefilled with gease, it equies no cleaning befoe use and is theefoe easy to handle. It is available with eithe steel balls o ceamic balls. Font side Back side Font side BNT2 BNT BNT9 Fig. 9.7 High-speed angula contact ball beaings fo ginding machines/motos Fig. 9.9 High-speed gease-lubicated sealed angula contact ball beaings 57

NTN Main Spindle Beaings 2 Standad cage design Table 9.1 Standad cages of angula contact ball beaings fo adial loads Beaing seies Molded nylon cage Machined phenol esin cage Machined high tensile bass cage 78C 79U (15, 25, 3 ), 79C 7U (15, 25, 3 ), 7C 72C HSE9U (15, 2, 25 ) HSE (15, 2, 25 ) HSF HSL9U (2, 25 ) HSL (2, 25 ) HSFL HSEW9U (2, 25 ) HSEW (2, 25 ) 79 LLB (15, 25 ) 7 LLB (15, 25 ) BNS9 LLB (15, 2, 25 ) BNS LLB (15, 2, 25 ) BNT9 BNT BNT2 79U 7926U 7U 726U 72C 722C 79 LLB 791 LLB 7 LLB 71 LLB 785C 7824C 7221C 7228C HSE91U HSE934U HSE1 HSE34 HSF1 HSF2 HSL91U HSL926U HSL1 HSL26 HSFL1 HSFL2 HSEW91U HSEW92U HSEW1 HSEW2 BNS91 LLB BNS92 LLB BNS1 LLB BNS2 LLB BNT9 BNT913 BNT BNT14 BNT2 BNT216 7826C 7834C 7928C 7934C 728C 74C Note 1) Cage design is subject to change without notice. Fo detailed infomation, contact NTN Engineeing. Note 2) The polyamide plastic cage can be used up to the following otating speeds depending on the mateial of the olling element. The dmn is 9, fo beaing steel and dmn is 1,, fo ceamics. Machined phenol esin cages must be used if the allowable otational speed of the dimensions listed exceeds the figues above. Fo detailed infomation, contact NTN Engineeing. 3 Beaing designations 78, 79, 7, 72, BNT type 5S- 7 2 U C T1 DB /GL P4 Pecision class P5: JIS class 5, P4: JIS class 4, P2: JIS class 2 Intenal cleaance code GL: Light peload, GN: Nomal peload, GM: cental peload, Gxx: Special peload, CSxx: Special cleaance Matching code DB: Back-to-back (double-ow) DT: Tandem (double-ow) DTBT: Tandem back-to-back (quad-ow) Cage code No code: Standad cage T1: Machined phenol esin cage T2: Molded polyamide esin cage L1: Machined high tensile bass cage Contact angle code C: 15, AD: 25, No symbol: 2 Beaing seies (ULTAGE Seies) Boe diamete code (See dimension table) Dimension seies code Beaing type Mateial code 5S: Ceamic olling elements No code: Steel olling elements 58

NTN Main Spindle Beaings HSE type 5S- 2LA-HSE 2 AD T2 DB /GL P4 Contact angle code C: 15, AD: 25, No symbol: 2 Boe diamete code (See dimension table) Dimension seies code Beaing type 2LASpecial mateial with impoved suface teatment HSL type 5S- 2LA-HSL 2 DB +xx Dn /GL P4 +TKZ Spacecode Locatedbesidebeaings Spacecode Locatedbetweenbeaings Spacewidthdimension noteshslbeaing seies code xxdneco-fiendly nozzle, o Space with Eco- fiendly nozzle located between beaings TKZEco-fiendly nozzle, o Space with Eco- fiendly nozzle located beside beaings Beaing type HSEW type 5S- 2LA-HSEW 2 DB/GL P4 Beaing type 79LLB / 7LLB type 5S- 76 CD LLB DB /GL P42 /L749 Accuacy class P42: Dimensional accuacy = JIS class 4, unning accuacy = JIS class 2 Beaing type (ULTAGE Seies) CD : Contact angle 15 AD : Contact angle 25 BNS type 5S- 2LA-BNS 2 LLB DB /GL P4 /L749 Gease code /L448 : Special gease MP-1 /L749 : Special gease SE-1 Seal code LLB: Non-contact ubbe seal on both sides Beaing type 59

NTN Main Spindle Beaings 4 Beaing accuacy Table 9.2 Inne ings Nominal boe diamete d Single plane mean boe diamete deviation dmp Class 5 Class 4 1 Class 2 1 ove incl. high low high low high low 2.5 1 18 3 5 8 12 15 18 1 18 3 5 8 12 15 18 25 5 5 6 8 9 1 13 13 15 4 4 5 6 7 8 1 1 12 2.5 2.5 2.5 2.5 4 5 7 7 8 Single adial plane boe diamete vaiation Vdsp Diamete seies 9 Diamete seies, 2 Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max max 5 5 6 8 9 1 13 13 15 4 4 5 6 7 8 1 1 12 2.5 2.5 2.5 2.5 4 5 7 7 8 4 4 5 6 7 8 1 1 12 3 3 4 5 5 6 8 8 9 2.5 2.5 2.5 2.5 4 5 7 7 8 Mean boe diamete deviation Vdmp Class 5 Class 4 Class 2 max 3 3 3 4 5 5 7 7 8 2 2 2.5 3 3.5 4 5 5 6 1.5 1.5 1.5 1.5 2 2.5 3.5 3.5 4 Inne ing adial unout Kia Class 5 Class 4 Class 2 max 1 The toleance of boe diamete deviation ds, applicable to classes 4 and 2, is the same as the toleance of mean boe diamete deviation dmp. This applies to the diamete seies o 2 fo class 4, and all the diamete seies fo class 2. 2 Applicable to individual beaing ings manufactued fo duplex beaings. 4 4 4 5 5 6 8 8 1 2.5 2.5 3 4 4 5 6 6 8 1.5 1.5 2.5 2.5 2.5 2.5 2.5 5 5 Table 9.3 Oute ings Nominal outside diamete D Single plane mean outside diamete deviation Dmp Class 5 Class 4 3 Class 2 3 ove incl. high low high low high low 18 3 5 8 12 15 18 25 3 5 8 12 15 18 25 315 6 7 9 1 11 13 15 18 5 6 7 8 9 1 11 13 4 4 4 5 5 7 8 8 6 7 9 1 11 13 15 18 Single adial plane outside diamete vaiation VDsp Diamete seies 9 Diamete seies, 2 Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max max 5 6 7 8 9 1 11 13 4 4 4 5 5 7 8 8 5 5 7 8 8 1 11 14 4 5 5 6 7 8 8 1 4 4 4 5 5 7 8 8 Mean single plane outside diamete vaiation VDmp Class 5 Class 4 Class 2 max 3 4 5 5 6 7 8 9 2.5 3 3.5 4 5 5 6 7 2 2 2 2.5 2.5 3.5 4 4 Oute ing adial unout Kea Class 5 Class 4 Class 2 max 6 7 8 1 11 13 15 18 4 5 5 6 7 8 1 11 2.5 2.5 4 5 5 5 7 7 3The toleance of outside diamete deviation Ds, applicable to classes 4 and 2, is the same as the toleance of mean outside diamete deviation Dmp. This applies to the diamete seies o 2 fo class 4, and all the diamete seies fo class 2. 6

NTN Main Spindle Beaings Pependiculaity of inne ing face with espect to the boe Sd Class 5 Class 4 Class 2 max Axial unout Sia Width deviation Bs Duplex Single beaing beaing 2 Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 Class 5 Class 4 max high low high low high low Unit: Width vaiation VBs Class 5 Class 4 Class 2 max 7 7 8 3 3 4 1.5 1.5 1.5 7 7 8 3 3 4 1.5 1.5 2.5 4 8 12 4 8 12 25 25 25 5 5 5 2.5 2.5 2.5 1.5 1.5 1.5 8 8 9 4 5 5 1.5 1.5 2.5 8 8 9 4 5 5 2.5 2.5 2.5 12 15 2 12 15 2 25 25 38 5 6 7 3 4 4 1.5 1.5 2.5 1 1 11 6 6 7 2.5 4 5 1 1 13 7 7 8 2.5 5 5 25 25 3 25 25 3 38 38 5 8 8 1 5 5 6 2.5 4 5 Pependiculaity of oute ing outside suface with espect to the face SD Class 5 Class 4 Class 2 max Axial unout Sea Class 5 Class 4 Class 2 max Width deviation Cs All types Unit: Width vaiation VCs Class 5 Class 4 Class 2 max 8 8 8 4 4 4 1.5 1.5 1.5 8 8 1 5 5 5 2.5 2.5 4 Identical to of Bs elative to d of the same beaing. 5 5 6 2.5 2.5 3 1.5 1.5 1.5 9 1 1 5 5 5 2.5 2.5 2.5 11 13 14 6 7 8 5 5 5 8 8 8 4 5 5 2.5 2.5 2.5 11 13 7 8 4 5 15 18 1 1 7 7 1 11 7 7 4 5 61

NTN Main Spindle Beaings 5 Intenal cleaance and standad peload of duplex angula contact ball beaings The initial intenal cleaance o peload fo duplex angula contact ball beaings is detemined with consideation fo two factos: tempeatue ise duing opeation and the igidity and accuacy equied afte assembly o duing opeation. The intenal cleaance of the beaing may be significantly affected duing opeation due to thee factos: the eduction in cleaance caused by fits, the tempeatue diffeence between the inne and oute ings duing opeation, and the effects of centifugal foce. Depending on the initial intenal cleaance, a significantly educed cleaance may esult in exteme tempeatue ise, vibation, noise, and shot sevice life. In addition, seizue may esult in some cases. Fo this eason, it is impotant to detemine the optimal initial intenal cleaance and initial peload equied fo opeation. When using a duplex angula contact ball beaing on the main spindle of a machine tool, the peload is detemined by consideing the type, main spindle configuation, lubication system, dive system, intended functions, and othe factos. Howeve, peload can also be genealized by the dmn value (dmn: pitch cicle diamete acoss olling elements [mm] multiplied by speed [min -1 ]), as shown below: dmn 5 1 3 Nomal peload (GN) 5 1 3 <dmn 65 1 3 Light peload (GL) dmn>65 1 3 to positive cleaance Fo detailed infomation, contact NTN Engineeing. Table 9.4 Radial intenal cleaance of duplex angula contact ball beaings Unit:m Nominal boe diamete d C1 C2 CN (nomal) ove incl. min max min max min max 1 18 3 5 8 1 12 15 18 1 18 3 5 8 1 12 15 18 2 3 3 3 3 3 3 3 3 3 3 8 8 1 1 11 13 15 16 18 2 6 6 6 8 11 13 15 16 18 2 12 12 12 14 17 22 3 33 35 4 8 8 1 14 17 22 3 35 35 4 15 15 2 25 32 4 5 55 6 65 Fo duplex angula contact ball beaings, NTN ecommends the initial adial cleaances and standad peloads shown in Tables 9.4 though 9.21. Select the optimal adial intenal cleaance and initial peload fo you application. When odeing a duplex angula ball beaing, please specify the desied peload and cleaance. If these ae not specified in the ode, we will ship a beaing with standad cleaance. Howeve, some poduct types do not have a standad cleaance. In this case, we will infom you of the available cleaances. Standad peloads of angula contact ball beaings (DB and DF aangements) Table 9.5 Standad angula contact ball beaings (78C type) Unit: N Nominal boe diamete Contact angle: 15 78xxC d Light peload Nomal peload Medium peload (GL) (GN) (GM) 25 3 35 4 45 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 14 15 16 17 1 1 1 1 2 2 29 29 29 29 29 29 49 49 49 49 49 78 78 98 98 147 147 147 29 29 29 29 49 49 98 98 98 98 98 98 147 147 147 147 147 196 196 294 294 39 39 49 78 78 78 78 98 98 196 196 196 196 196 196 294 294 294 294 294 49 49 59 59 785 785 98 62

NTN Main Spindle Beaings Table 9.6 Standad angula contact ball beaings (79 seies) Nominal boe Contact angle: 15 Contact angle: 25 diamete 79xxUC/5S-79xxUC 79xxUAD/5S-79xxUAD d Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload (GL) (GN) (GM) (GL) (GN) (GM) Light peload (GL) Contact angle: 3 79xxU/5S-79xxU Nomal peload (GN) Unit: N Medium peload (GM) 1 12 15 17 2 25 3 35 4 45 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 2 2 2 29 29 39 39 39 39 39 59 59 59 78 88 88 18 18 18 137 167 2 2 29 29 49 49 49 78 88 18 118 118 127 127 177 177 186 245 255 255 325 335 335 41 51 39 39 59 69 88 98 18 167 177 216 226 236 245 245 365 365 365 49 5 51 655 655 665 835 1 2 2 2 2 2 39 39 49 49 59 59 59 88 88 88 118 118 118 157 157 157 196 235 29 29 49 49 69 78 78 127 137 167 177 186 196 196 284 284 284 39 39 4 51 52 53 655 8 59 69 98 98 147 157 167 255 275 345 355 375 38 39 56 57 58 77 78 795 1 2 1 4 1 6 1 3 1 6 2 2 29 29 29 49 49 69 69 69 78 78 18 18 18 147 147 157 196 196 26 245 35 39 39 59 69 88 98 98 167 167 216 226 235 245 245 355 355 365 48 49 5 635 645 655 815 99 78 78 118 127 186 196 26 325 345 42 45 46 48 49 695 75 715 97 98 99 1 27 1 3 1 31 1 62 1 99 79xxC 14 196 49 98 15 245 685 1 47 16 245 685 1 47 17 245 685 1 47 63

NTN Main Spindle Beaings Table 9.7 Standad angula contact ball beaings (7 seies) Nominal boe diamete d 1 12 15 17 2 25 3 35 4 45 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 14 15 16 17 18 19 2 Light peload (GL) 2 2 29 29 39 39 49 49 69 69 78 98 98 118 127 147 157 157 186 26 216 265 294 294 49 49 49 59 59 Contact angle: 15 7xxUC/5S-7xxUC Nomal peload (GN) 29 39 39 49 69 78 98 118 127 147 157 216 216 226 294 294 365 375 44 46 46 55 63 635 8 7xxC 785 785 98 98 98 1 47 1 47 Medium peload (GM) 59 69 78 98 137 147 186 235 255 3 325 42 43 46 58 6 725 75 89 91 93 1 9 1 25 1 27 1 6 1 96 1 96 2 45 2 45 2 45 3 45 3 45 Light peload (GL) 2 2 2 2 29 39 49 59 59 69 78 98 18 18 137 137 177 177 26 216 226 255 294 35 38 Contact angle: 25 7xxUAD/5S-7xxUAD Nomal peload (GN) 49 59 59 78 18 118 147 186 26 245 255 335 345 365 46 47 58 59 75 715 74 86 99 1 1 1 27 Medium peload (GM) 18 18 127 157 216 235 35 38 4 48 51 665 68 725 92 94 1 15 1 18 1 4 1 43 1 47 1 72 1 98 2 2 2 53 1 12 15 17 2 25 3 35 4 45 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 Light peload (GL) 2 2 29 29 39 49 59 69 78 88 98 127 127 137 177 177 216 226 265 275 284 335 38 38 48 2 2 2 2 49 49 49 78 78 98 98 147 147 147 196 196 196 294 294 294 294 39 39 39 49 Contact angle: 3 7xxU/5S-7xxU Nomal peload (GN) 69 69 78 98 137 147 186 235 255 35 325 42 43 45 58 59 715 735 875 9 92 1 7 1 23 1 26 1 57 49 49 49 49 98 98 98 196 196 294 294 39 39 39 49 49 49 685 685 685 685 98 98 98 1 47 Unit: N Medium peload (GM) 127 137 157 196 265 294 375 48 51 6 635 845 855 9 1 15 1 18 1 43 1 47 1 75 1 79 1 83 2 14 2 46 2 51 3 15 Table 9.8 Standad angula contact ball beaings (72C seies) Unit: N Nominal boe Contact angle: 15 diamete 72xxC d Light peload Nomal peload Medium peload (GL) (GN) (GM) 98 98 147 147 294 294 294 49 49 59 59 785 785 785 98 98 98 1 47 1 47 1 96 1 96 2 45 2 45 2 45 2 94 64

NTN Main Spindle Beaings Table 9.9 High-speed angula contact ball beaings (HSE9 seies) Unit: N Nominal boe Contact angle: 15 Contact angle: 2 Contact angle: 25 diamete HSE9xxUC/5S-HSE9xxUC HSE9xxU/5S-HSE9xxU HSE9xxUAD/5S-HSE9xxUAD d Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload (GL) (GN) (GM) (GL) (GN) (GM) (GL) (GN) (GM) 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 14 15 16 17 34 44 44 44 69 69 69 98 98 98 118 118 118 157 186 186 255 255 255 88 18 118 118 167 177 177 235 245 255 294 294 294 39 49 49 635 635 635 177 216 226 226 345 345 345 49 49 49 59 59 59 785 93 93 127 127 127 39 49 49 49 74 74 74 98 18 18 127 127 127 167 196 26 276 276 276 127 157 167 167 245 255 255 345 345 345 44 44 44 54 685 685 93 93 93 255 345 345 345 49 49 54 685 735 735 835 885 885 18 137 137 186 186 186 39 49 54 54 78 83 83 18 118 118 137 137 137 177 226 226 294 294 294 177 216 226 226 345 345 345 49 49 49 59 59 59 785 93 93 127 127 127 345 44 44 44 685 685 685 93 98 98 117 117 117 157 186 186 255 255 255 Table 9.1 High-speed angula contact ball beaings (HSE seies) Unit: N Nominal boe Contact angle: 15 Contact angle: 2 Contact angle:25 diamete HSExxC/5S-HSExxC HSExx/5S-HSExx HSExxAD/5S-HSExxAD d Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload (GL) (GN) (GM) (GL) (GN) (GM) (GL) (GN) (GM) 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 14 15 16 17 59 69 69 69 88 98 18 18 127 127 137 157 196 196 275 284 294 345 39 157 177 186 186 226 235 275 275 325 325 345 39 48 48 695 715 735 865 99 315 345 365 365 45 48 55 56 645 645 675 775 96 96 1 38 1 43 1 47 1 73 1 98 69 78 78 78 98 18 118 118 137 147 147 167 26 216 35 315 325 375 43 235 255 265 265 325 355 4 4 47 48 49 57 695 75 1 2 1 5 1 8 1 26 1 45 46 51 53 54 655 695 85 815 94 96 99 1 14 1 4 1 41 2 3 2 9 2 15 2 52 2 9 78 78 88 88 18 118 127 127 157 157 157 186 226 226 325 345 345 41 47 35 325 345 345 42 45 52 52 61 62 635 725 9 91 1 3 1 35 1 38 1 63 1 86 6 645 685 695 845 9 1 3 1 4 1 22 1 24 1 27 1 45 1 8 1 82 2 61 2 71 2 77 3 25 3 75 65

NTN Main Spindle Beaings Table 9.11 Eco-fiendly ai-oil lubicated angula contact ball beaings (HSL9 seies) Nominal boe diamete d 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 Light peload (GL) 39 49 49 49 74 74 74 98 18 18 127 127 127 167 196 Contact angle: 2 5S-HSL9xxU Nomal peload (GN) 127 157 167 167 245 255 255 345 345 345 44 44 44 54 685 Medium peload (GM) 255 345 345 345 49 49 54 685 735 735 835 885 885 18 137 Light peload (GL) 39 49 54 54 78 83 83 18 118 118 137 137 137 177 226 Unit: N Contact angle: 25 5S-HSL9xxUAD Nomal peload (GN) 177 216 226 226 345 345 345 49 49 49 59 59 59 785 93 Medium peload (GM) 345 44 44 44 685 685 685 93 98 98 117 117 117 157 186 Table 9.12 Eco-fiendly ai-oil lubicated angula contact ball beaings (HSL seies) Nominal boe diamete d 5 55 6 65 7 75 8 85 9 95 1 15 11 12 13 Light peload (GL) 69 78 78 78 98 18 118 118 137 147 147 167 26 216 35 Contact angle: 2 5S-HSLxx Nomal peload (GN) 235 255 265 265 325 355 4 4 47 48 49 57 695 75 12 Medium peload (GM) 46 51 53 54 655 695 85 815 94 96 99 114 14 141 23 Light peload (GL) 78 78 88 88 18 118 127 127 157 157 157 186 226 226 325 Unit: N Contact angle: 25 5S-HSLxxAD Nomal peload (GN) 35 325 345 345 42 45 52 52 61 62 635 725 9 91 13 Medium peload (GM) 6 645 685 695 845 9 1 3 1 4 1 22 1 24 1 27 145 18 182 261 Table 9.13 Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing (HSEW9U seies) Unit: N Nominal boe diamete d 5 55 6 65 7 75 8 85 9 95 1 Light peload (GL) 39 49 49 49 74 74 74 98 18 18 127 Contact angle: 2 5S-HSEW9xxU Nomal peload (GN) 127 157 167 167 245 255 255 345 345 345 44 Medium peload (GM) 255 345 345 345 49 49 54 685 735 735 835 Light peload (GL) 39 49 54 54 78 83 83 18 118 118 137 Contact angle: 25 5S-HSEW9xxUAD Nomal peload (GN) 177 216 226 226 345 345 345 49 49 49 59 Medium peload (GM) 345 44 44 44 685 685 685 93 98 98 117 Table 9.14 Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing (HSEW seies) Unit: N Nominal boe diamete d 5 55 6 65 7 75 8 85 9 95 1 Light peload (GL) 69 78 78 78 98 18 118 118 137 147 147 Contact angle: 2 5S-HSEWxx Nomal peload (GN) 235 255 265 265 325 355 4 4 47 48 49 Medium peload (GM) 46 51 53 54 655 695 85 815 94 96 99 Light peload (GL) 78 78 88 88 18 118 127 127 157 157 157 Contact angle: 25 5S-HSEWxxAD Nomal peload (GN) 35 325 345 345 42 45 52 52 61 62 635 Medium peload (GM) 6 645 685 695 845 9 1 3 1 4 1 22 1 24 1 27 Table 9.15 Gease-lubicated sealed angula contact ball beaings (79CD and AD seies) Unit: N Nominal boe Contact angle: 15 Contact angle: 25 diamete 79xxCD/5S-79xxCD 79xxAD/5S-79xxAD d Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload (GL) (GN) (GM) (GL) (GN) (GM) 1 12 15 17 2 25 3 35 4 45 5 1 1 1 1 2 2 2 29 29 39 39 29 29 29 29 49 49 49 78 78 98 98 78 78 78 78 98 98 98 196 196 245 245 29 29 29 49 49 49 49 39 39 49 49 98 98 98 147 147 196 196 78 78 147 147 196 196 196 294 294 39 39 Table 9.16 Gease-lubicated sealed angula contact ball beaings (7CD and AD seies) Unit: N Nominal boe Contact angle: 15 Contact angle: 25 diamete 7xxCD/5S-7xxCD 7xxAD/5S-7xxAD d Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload (GL) (GN) (GM) (GL) (GN) (GM) 1 12 15 17 2 25 3 35 4 45 5 2 2 2 2 29 29 29 49 49 49 49 29 29 29 29 78 78 78 147 147 147 147 98 98 98 98 147 147 147 294 294 294 294 29 29 29 29 49 49 49 78 78 78 78 78 78 78 78 147 147 147 294 294 294 294 147 147 147 147 294 294 294 59 59 59 59 66

NTN Main Spindle Beaings Table 9.17 High-speed gease-lubicated sealed angula contact ball beaings (BNS9 seies) Unit: N Nominal boe Contact angle: 15 Contact angle: 2 Contact angle: 25 diamete d Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload Light peload Nomal peload Medium peload (GL) (GN) (GM) (GL) (GN) (GM) (GL) (GN) (GM) 5 29 78 167 39 118 235 39 157 35 55 39 18 26 49 147 35 49 196 39 6 39 18 216 49 157 315 49 196 4 65 39 18 216 49 157 315 49 26 41 7 59 137 275 59 196 4 69 255 52 75 59 137 284 59 26 41 69 265 53 8 59 147 294 59 216 42 69 275 55 85 69 177 345 78 255 51 78 325 655 9 69 177 355 78 265 52 88 335 665 95 69 186 365 78 265 54 88 345 685 1 98 255 51 18 375 755 118 48 97 Table 9.18 High-speed gease-lubicated sealed angula contact ball beaings (BNS seies) Unit: N Contact angle: 15 Contact angle: 2 Contact angle: 25 BNSxxC/5S-BNSxxC BNSxx/5S-BNSxx BNSxxAD/5S-BNSxxAD Nominal boe diamete d Light peload (GL) Nomal peload (GN) Medium peload (GM) Light peload (GL) Nomal peload (GN) Medium peload (GM) Light peload (GL) Nomal peload (GN) Medium peload (GM) 45 5 55 6 65 7 75 8 85 9 95 1 49 59 69 69 69 88 98 18 18 127 127 137 118 157 177 186 186 226 235 275 275 325 325 345 235 315 345 365 365 45 48 55 56 645 645 675 49 69 78 78 78 98 18 118 118 137 147 147 177 235 255 265 265 325 355 4 4 47 48 49 345 46 51 53 54 655 695 85 815 94 96 99 59 78 78 88 88 18 118 127 127 157 157 157 226 35 325 345 345 42 45 52 52 61 62 635 45 6 645 685 695 845 9 1 3 1 4 1 22 1 24 1 27 Table 9.19 High-speed sealed angula contact ball beaings (BNT9 seies) Nominal boe diamete d Light peload (GL) Table 9.2 High-speed sealed angula contact ball beaings (BNT seies) Table 9.21 High-speed sealed angula contact ball beaings (BNT2 seies) Unit: N Unit: N Unit: N Contact angle: 15 BNT9xx/5S-BNT9xx Nominal boe diamete Contact angle: 15 BNTxx/5S-BNTxx Nominal boe diamete Contact angle: 15 BNT2xx/5S-BNT2xx d d Nomal peload (GN) Medium peload (GM) Light peload (GL) Nomal peload (GN) Medium peload (GM) Light peload (GL) Nomal peload (GN) Medium peload (GM) 1 12 15 17 2 25 3 35 4 45 5 55 6 65 1 1 1 1 2 2 2 29 29 39 39 49 49 49 29 29 29 29 49 49 49 78 78 98 98 118 118 118 78 78 78 78 98 98 98 196 196 245 245 294 294 294 1 12 15 17 2 25 3 35 4 45 5 55 6 65 7 2 2 2 2 29 29 29 49 49 49 49 98 98 98 98 29 29 29 29 78 78 78 147 147 147 147 196 196 196 294 98 98 98 98 147 147 147 294 294 294 294 49 49 49 685 1 12 15 17 2 25 3 35 4 45 5 55 6 65 7 75 8 2 2 2 2 49 49 49 78 78 98 98 147 147 147 196 196 196 49 49 49 49 98 98 98 196 196 294 294 39 39 39 49 49 49 98 98 147 147 294 294 294 49 49 59 59 785 785 785 98 98 98 67

NTN Main Spindle Beaings 6 Recommended fit fo angula contact ball beaings If the dmn value is in the ange of dmn 75 1 3 (dm : pitch cicle diamete acoss olling elements [mm], n: speed [min -1 ]), the fit values shown in Tables 9.22 and 9.23 ae ecommended to ensue high accuacies of pecision beaings. If the dmn value is in the ange of dmn>75 1 3, it is necessay to conside expansion of inne ing caused by centifugal foce. In this case, contact NTN Engineeing fo the ecommended fit. As fo the fit of the oute ing with the housing, conside the influence of the ambient tempeatue (such as heat buildup on a built-in moto o the cooling effect of jacket). Fo technical assistance, contact NTN Engineeing. Table 9.22 Shaft fit Nominal boe diamete d Ove 2.5 1 18 3 5 8 Incl. 1 18 3 5 8 12 Fit of inne ing with shaft 2T 2T 2T 3T 1T4T 1T5T Unit: 7 Duplex angula contact ball beaings Duplex angula contact ball beaings can be combined in ows of two, thee o fou beaings to accommodate equied specifications. The back-to-back duplex (DB) aangement and the face-to-face duplex (DF) aangement allow fo the application of both adial loads and axial loads in both diections. The DB aangement has a wide space between load points and can handle lage moment loads. Fo this eason, this type of duplex aangement is pefeable fo use on the main spindles of machine tools. The DF aangement cannot handle lage moment loads, but its allowable inclination angle is geate than that of the DB aangement. The tandem duplex (DT) aangement can handle both a adial load and lage axial load, but this beaing can take the axial load in one diection only. The 4-ow duplex (type DTBT) aangement ensues high igidity in the adial and axial diections and accommodates high-speed opeation. Fo this eason, this type of duplex beaing is commonly used fo the main spindles of machining centes. Each duplex angula contact ball beaing is manufactued as a set to enable adjustment of the peload and cleaance. Fo this eason, combine only duplex beaings of the same poduct numbe. 12 18 18 25 2T7T 2T8T Notes: 1. The mean value should be the taget value. 2. If the dmn value of the high-speed machine is in the ange of dmn751 3, it is necessay to incease the amount of intefeence. In this case, contact NTN Engineeing fo technical assistance. T: Tight (Intefeence) Fit DB duplex aangement DF duplex aangement DT duplex aangement Table 9.23 Housing fit Unit: Nominal outside diamete D Fit of oute ing with housing Ove Incl. Beaing on fixed side Beaing on fee side 1 5 8 5 8 12 2L5L 3L7L 4L9L 6L1L 6L12L 8L13L DBT duplex aangement Fig. 9.1 DTBT duplex aangement 12 15 18 15 18 25 5L11L 6L13L 7L15L 1L16L 11L17L 13L2L 25 315 8L17L 15L23L Notes: 1. The mean value should be the taget value. 2. If the dmn value is in the ange of dmn11 4, space width and beaing aangement, it is necessay to incease the amount of intefeence. In this case, contact NTN Engineeing fo technical assistance. L: Loose fit 68

NTN Main Spindle Beaings 8 Duplex aangement codes fo angula contact ball beaings Each duplex ball beaing has a poduct numbe and duplex aangement code etched on its side face. On angula contact ball beaing sets of thee o moe, each matching beaing has a "<" mak on its outside suface. ~~~ Be sue to align the "<" mak when assembling the ~~~ beaings. Note that duplex angula contact ball beaing types DB and DF do not have the "<" mak. To match them, ~~~ align the duplex aangement codes. Poduct numbe/duplex aangement code A Poduct numbe/duplex aangement code AB Poduct numbe Fig. 9.11 Poduct numbe Poduct numbe Poduct numbe Poduct numbe/duplex aangement code BC Poduct numbe 9 Flush ginding and univesal matching Angula contact ball beaings ae often combined fo a special pupose. Face-to-face duplex (DF) aangement, back-to-back duplex (DB) aangement and tandem duplex (DT) aangement may be combined in ows of two o moe. When combining many beaings, it is impotant to contol the accuacies of the beaings and to align thei face heights in a common plane. Flush ginding Flush ginding is a finishing technique in which the font and back faces of the inne and oute ings ae aligned with each othe to eliminate diffeences in face height (Fig. 9.13). Such alignment can ensue the specified cleaance and Back Face height diffeence A Face height diffeence B Font A=B Fig. 9.13 Flush ginding peload fo DF, DB, and DT sets, but it is possible only if the combined beaings have the same cleaance/peload symbols. The flush ginding technique is employed fo standad BNT seies, seies, and 2 seies beaings designed fo main spindles of machine tools, and fo 2A-BST thust angula contact ball beaings designed to suppot ballscews. Note: The flush ginding technique is also adopted fo othe types of angula contact ball beaings. When odeing a beaing, append G to the poduct numbe to specify the flush gound type. Example: 71UC G/GNP4 Contol of beaing-to- beaing diffeence Contol of beaing-to- beaing diffeence Fig. 9.12 Combinations can be changed. Adjustment of the cleaance is not necessay. Contol of beaing-to- beaing diffeence Contol of beaing-to- beaing diffeence Combinations can be changed. Adjustment of the cleaance is not necessay. Fig. 9.14 Univesal matching Univesal Matching In addition to the flush ginding technique, univesal matching is employed fo duplex angula contact ball beaings. Univesal matching contols the beaing-tobeaing dimensional diffeences in the boe and outside diametes. NTN can contol the beaing-to-beaing diffeence in the boe and outside diametes to no moe than onethid the toleance (a minimum of 2 μm). Univesal matching is adopted fo duplex angula contact ball beaings of JIS class 5 o bette. When odeing a beaing, specify the desied numbe of duplex beaings to be used in combination ( D2 fo DB, DF o DT; and D3 fo DBT, DFT o DTT). Contol of beaing-to- beaing diffeence Contol of beaing-to- beaing diffeence DB aangement DF aangement DT aangement Altenately, indicate the basic combination and specify univesal matching. If two duplex beaings ae combined, D2 is appended to the poduct numbe. Example: 71UC G D2/GNP4 69

NTN Main Spindle Beaings! Angula contact ball beaings with ceamic balls Recently, the main spindles of machining centes, NC machines and othe machine tools have been equied to opeate at much highe speeds. Beaings fo main spindles theefoe must meet the equiements of high speed and igidity as well as accuacy. To meet such equiements, many of ou customes want the olling element made of ceamic mateial. The featues of angula contact ball beaings with ceamic balls ae descibed below. Limited tempeatue ise and ulta-high speeds The specific gavity of ceamic mateial is one-half that of beaing steel. In addition, the ball diamete of 5S-HSE type is smalle than that of the standad 7 type. Fo this eason, use of ceamic balls geatly educes the influence of centifugal foce (ball sliding and spinning caused by gyatoy moment). As a esult, these angula contact ball beaings inhibit tempeatue buildup and ensue ulta-high speed. High beaing igidity fo high accuacy of manufactued poducts The Young s modulus of ceamic mateial is appoximately 1.5 times that of beaing steel. The igidity of these angula contact ball beaings is theefoe geatly inceased. Fig. 9.16 Test ig fo measuing tempeatue ise Beaing tempeatue ise C Beaing tested2la-hseo16c Shaft speed 412 min -1 Lubication Ai-oil lubication Aiflow ate 3 NL/min Oil supply ate.36 ml/h 2 15 1 5 Steel ball Ceamic ball Table 9.24 Compaison of physical popeties between ceamic and steel balls Density (g/cm 3 ) Item Young s modulus (GPa) Poisson s atio Themal expansion (1-6 / C) Themal conductivity atio (Cal/cms C) Ceamic (Si3N4) 3.34 315.25 3.2.7 Beaing steel (SUJ2) 7.8 21.3 12.5.1.12 4 6 8 1 121 3 Speed min -1 Fig. 9.15 Compaison of tempeatue ise between beaings with ceamic balls and those with steel balls 7

NTN Main Spindle Beaings!1 Opeating life of beaings with ceamic balls Test conditions Beaing tested:626 Beaing load :686 N{7 kgf} Shaft speed :2 min -1 Lubication :Class 1 tubine oil (VG56), ciculating lubication Test machine Coupling Pulley Loading sping Suppot beaing 6312 Test beaing Accumulative pobability of failue % Hatched aea: With steel balls : With ceamic balls 99 8 5 2 1 5 1 1 2 4 68 1 2 2 4 8 1 3 2 4 6 8 1 4 2 4 6 8 Opeating lifeln Fig. 9.17 Radial load-type beaing life test machine Fig. 9.18 Opeating life of ball beaing with ceamic balls Beaing fiction toquenmm 7 6 5 4 3 2 1 Steel ball Ceamic ball 5, 1, 15, 2, Speedmin -1 Displacement in axial diection 25 2 15 1 5 Steel ball Ceamic ball 1 2 3 4 5 6 7 8 Axial loadn Fig. 9.19 Fictional toque Fig. 9.2 Displacement in axial diection 71

NTN Main Spindle Beaings!2 Recommended lubication Angula contact ball beaings ae usually used with gease lubication o ai-oil lubication. Recommended lubication specifications ae descibed below. Gease lubication Recommended band of gease Refe to 7. Lubication of Beaings, 7-1 Gease lubication in the Technical Data section. Recommended gease fill dmn value 65 1 3 15% of the capacity shown in the dimension tables dmn>65 1 3 12% of the capacity shown in the dimension tables Recommended gease filling method Refe to 6. Handling of Beaings, 6-1 Cleaning of beaings and filling with gease in the Technical Data section. Notes Gease-lubicated sealed angula contact ball beaings (79 LLB/7 LLB type, and BNS type beaings) ae pefilled with long-life SE-1 gease. Wipe ust peventive oil fom the outside of the beaing with a clean cloth. Ai-oil lubication Recommended location of nozzle Refe to 7. Lubication of Beaings, 7-2 Ai-oil lubication in the Technical Data section. Recommended specifications of nozzle Nozzle boe dia.: 1 to 1.5 mm Numbe of nozzles: One nozzle pe beaing, depth of nozzle boe should be fou to six times as lage as the boe diamete. Recommended specifications of ai-oil Oil type: Spindle oil Viscosity gade: ISO VG fom 1 to 32 (32 is pefeable) Table. 9.25 Ai and oil amount Beaing type 78C,79U,7U, 72C HSE9, HSE HSF HSL HSFL HSEW dmn value (1 6 ) Ove Incl. 1 1 15 15 26 26 22 Oil valume pe shot ml.3 Lubication intevals 8 5 2 1 Oil consumption ml/h.23.36.9.18 24 NR/min (Nomal lite/minute)... NRmeans the volume of ai at C and 1 atmosphee. min Recommended ai consumption NL/min 72

NTN Main Spindle Beaings!3 Standad angula contact ball beaings 79U and 7U types ULTAGE 79U and 7U seies beaings wee developed fom standad angula contact ball beaings (79 and 7). Optimized intenal design and adoption of a new esin cage allows high-speed opeation and ensues high igidity. Featues 1. Optimized intenal design enables high-speed opeation and high igidity. 2. A new esin cage enables impovement in gease etention fo gease lubication and enhanced pefomance in feeding and dischage of oil fo ai-oil lubication. 3. Beaings ae available with eithe steel o ceamic balls. 4. Thee contact angles (15, 2, and 3 ) ae available to handle a wide ange of applications. Beaing specifications Ai-oil Fig. 9.21 79U and 7U types Photo 9.1 New esin cage High-speed opeation Optimized intenal design and adoption of a new esin cage enable stable opeation at dmn value 95 1 3, with gease lubication. Test conditions Test Beaing Shaft speed Peload afte assembled Gease lubication Tempeatue incease on oute ing C Tempeatue incease on oute ing C 2 15 1 5 71UCDB (5816) 15 min -1 2 N (Fixed position peloading) NBU15 dmn value 1 6 Fig. 9.22 High-speed test with gease lubication Stable opeation is possible with dmn value 1.51 6, with ai-oil lubication. Test conditions Tested Beaing Speed Peload afte assembled Ai-oil lubication 4 35 3 25 2 15 1 5 w/ jacket cooling w/o jacket cooling 5 1 15 2.5 1. w/ jacket cooling w/o jacket cooling Speedmin -1 71UCDB (5816) 23 min -1 2 N (Fixed position peloading).3 ml/shot (oil injection intevals: 5 min, ai consumption: 4 NL/min) 5 1 15 2 25 Speedmin -1.65 1.3 dmn value 1 6 Fig. 9.23 High-speed test with ai-oil lubication Pemissible speed ange dmn value 1 6 7U 79U.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 3 25 15 3 3 25 15 25 15 3 25 15 Gease lubication Ai-oil lubication 5S-7U 3 25 15 3 25 15 3 25 15 5S-79U 3 25 15 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement), and then, contact NTN Engineeing fo technical assistance. 73

NTN Main Spindle Beaings!4 High-speed angula contact ball beaings HSE type The HSE type employs a special mateial featuing geatly impoved wea esistance and anti-seizue popeties as well as a special suface modification technique. Futhemoe, thanks to an optimized intenal design, this type achieves high speed, high igidity and high eliability. Featues 1. Adoption of special mateials and a unique intenal design impove anti-seizue popeties (15 times bette than the conventional type) and wea esistance (6 times bette than of the conventional type). 2. Optimized intenal design enables high-speed opeation and high igidity. 3. Beaings ae available with eithe steel o ceamic balls. 4. Thee contact angles (15, 2, and 25 ) ae available to handle a wide ange of applications. Beaing specification Ai oil Fig. 9.24 HSE type Peload and low tempeatue ise The 5S-HSE type featues high speed and limited tempeatue incease. Even if its peload is inceased afte assembly into the spindle, it maintains stable pefomance at high speeds (Fig. 9.25). Test condition Test beaing Shaft speed Lubication Oil consumption Ai consumption Oute casing cooling Tempeatue incease of oute ing C 2 18 16 14 12 1 8 6 4 2 5S-2LA-HSE2 (contact angle 2 ) (115242 ows) 15 min -1 Ai-oil lubication.3 ml/shot (Oil shot intevals 5 min) 4NL/min Povided.5 1. 1.5 2. 2.5 dmn value 1 6 Fig. 9.25 Relationship between peload and tempeatue incease Impoved main spindle igidity When built into a high-speed main spindle, the peload of the 5S-HSE standad type is maintained, allowing high igidity (1.9 times geate than a conventional beaing) (Fig. 9.26). Test condition Axial displacement m Test beaing Post-assembly peload 35 3 25 2 15 1 5 5S-HSE type Post-assembly peload N Post-assembly peload 5 N Post-assembly peload 1 N 5 1 15 2 Shaft speedmin -1 HSB (contact angle 15 ) HSB (contact angle 2 ) HSE (contact angle 2 ) 5S-HSB2 (contact angles 15 and 2 ) 5S-2LA-HSE2 (contact angle 2 ) (115242 ows) 5S-HSB2 5S-HSE2 N 5 N Pemissible speed ange dmn value 1 6 2LA-HSE 2LA-HSE9.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 25 15, 2 25 15, 2.5 1 1.5 2 2.5 3 Axial loadkn Fig. 9.26 Compaison of igidity elative to conventional beaing (HSB type) in tems of post-assembly peload 25 25 15, 2 15, 2 Gease lubication Ai-oil lubication 5S-2LA-HSE 25 15, 2 25 15, 2 74 5S-2LA-HSE9 25 15, 2 25 15, 2 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement) and then contact NTN Engineeing fo technical assistance.

NTN Main Spindle Beaings!5 Supe high-speed angula contact ball beaings HSF type The HSF type ealizes futhe impovement in highspeed unning and inhibited tempeatue ise by adoption of smalle diamete ceamic balls, while etaining featues of the HSE type. This type attains dmn values as high as 2.6 million with fixed pessue peloading. Featues 1. Adoption of special mateials and a unique intenal design impove anti-seizue popety (15 times bette than the conventional type) and wea esistance (6 time bette than the conventional type). 2. Optimized intenal design enables high-speed opeation and high igidity. 3. Ceamic balls ae used. 4. Initial contact angle is set to 25 to accommodate the change in contact angle duing supe high-speed opeation. Beaing specification Ai oil Low tempeatue ise Supe high-speed 5S-HSF seies angula contact ball beaings utilize smalle balls than those of the highspeed HSE seies. This educes heating due to centifugal foce and ensues lowe tempeatue ise. Thus, the 5S-HSF type boasts an appoximately 1% eduction in tempeatue ise as compaed to the 5S- HSE type. (Fig. 9.28) Test condition Tempeatue ise of oute ing C Test beaing Shaft speed Lubication Oil consumption Ai consumption Oute casing cooling 25 2 15 1 5 5S-HSE (peload 5 N) 5S-HSF type (peload 25 N) 5S-2LA-HSE2 (contact angle 2 ) 5S-2LA-HSF2 (contact angle 25 ) (115242 ows) 14 min -1 Ai-oil lubication.3 ml/shot (Oil shot intevals 5 min) 4NL/min None 5 1 15 2 Shaft speedmin -1.5 1. 1.5 2. 2.5 dmn value 1 6 Fig. 9.28 Compaison of tempeatue ise Fig. 9.27 HSF type Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 5S-2LA-HSF Fixed-pessue peloading Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement) and contact NTN Engineeing fo technical assistance. 75

NTN Main Spindle Beaings!6 Eco-fiendly ai-oil lubicated angula contact ball beaings HSL type HSFL type The HSL/HSFL type is an advanced vaiation of the HSE/HSF type, chaacteized by incopoation of NTN s unique eco-conscious lubication technology. The HSL type helps decease oil mist emissions and consumption of ai and oil, impoving the woking envionment fo machine tool opeatos and educing enegy consumption. Featues 1. Adoption of special mateials and a unique intenal design impove anti-seizue popeties (15 times bette compaed with the conventional type) and wea esistance (6 times bette than the conventional type). 2. Beaings ae available with eithe steel o ceamic balls (HSFL is available with ceamic balls only). 3. Adoption of eco-fiendly nozzle educes noise (eduction of 2 to 8 dba), ai consumption (eduction of 5 to 75%) and oil consumption (eduction of 2 to 9%) Beaing specification Ai-oil Ai-oil Eco-fiendly nozzle HSE(HSF) type HSL/HSFL type (ULTAGE) Fig. 9.29 HSL and HSFL types Intenal specification of HSE type Eco-fliendly specification NOTE) The HSL/HSFL type is packed togethe with the space with the eco-fliendly nozzle. The beaing type code HSL epesents the beaing pope, while a space code stands fo an eco-conscious nozzle pope o a space having a built-in nozzle. Fo moe details, see 3. Beaing Designation. Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 5S-2LA-HSL 25 2 5S-2LA-HSL9 25 2 5S-2LA-HSFL Fixed-pessue peloading Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement) and contact NTN Engineeing fo technical assistance. Data 1 In the high-speed egion of 1 min -1, the noise level of the HSL type is 6 dba to 8 dba lowe than that of the conventional type (HSC type) (Fig. 9.3). Noise value dba 12 11 1 9 8 HSFL type HSF type Test conditions Test beaing Shaft speed Peload 5S-2LA-HSFL2DB 5S-2LA-HSF2DB (115242 ows) 2 min -1 2.5 kn (constant pessue peloading) 7 6 5 1 15 2 Speedmin -1.5 1. 1.5 2. 2.5 dmn value 1 6 Fig. 9.3 Compaison of noise levels 76

NTN Main Spindle Beaings Data 2 Fo 5S-HSFL type beaings, the tempeatue of the oute ings emains stable even with an ai consumption as low as 1 NR/min (5 to 25% of the ecommended ai consumption fo standad beaings) at a speed of 21 min -1 (dmn 2.6 1 6 ) (Fig. 9.31). Tempeatue incease of oute ing C 8 7 6 HSFL type HSF type Test conditions Test beaing Shaft speed Peload Oil consumption 5S-2LA-HSFL2DB 5S-2LA-HSF2DB (115242 ows) 21 min -1 2.5 kn(constant pessue peloading).3 ml/shot (oil shot intevals, 5 min) 5 1 2 3 4 5 Ai consumptionnl/min Fig. 9.31 Relationship between ai consumption and tempeatue incease Data 3 The 5S-HSFL type beaings can opeate at 21 min -1 (dmn 2.6 1 6 ) with oil shot intevals of 21 min (eduction of 2 to 9% as compaed with the ecommended oil consumption fo standad beaings) (Fig. 9.32). Tempeatue incease of oute ing C 8 7 6 HSFL type HSF type 5 5 1 15 2 25 Oil shot intevalsmin Unstable Fig. 9.32 Relationship between oil shot intevals and tempeatue incease Test conditions Test beaing Shaft speed Peload Oil consumption Ai consumption 5S-2LA-HSFL2DB 5S-2LA-HSF2DB (115242 ows) 21 min -1 2.5 kn (constant pessue peloading).3 ml/shot 12.5 NL/min Data 4 5S-HSL type beaings can eliably un at a speed of 19 min -1 (fixed position peloading) (Fig. 9.33) with both decease ai and oil consumption. Tempeatue incease of oute ing C 65 55 45 35 HSL type HSE type Unstable 25 8 1 12 14 16 18 2 Speedmin -1 1. 1.5 2. 2.5 dmn value 1 6 Fig. 9.33 High-speed test esults (fixed position peloading) Test conditions Test beaing Shaft speed Peload Oil consumption Ai consumption 5S-2LA-HSL2DB 5S-2LA-HSE2DB (115242 ows) 119 min -1 Afte assembly, (fixed position peloading).3 ml/shot (oil shot intevals, 1 min) 1 NL/min (HSL) 3 NL/min (HSE) 77

NTN Main Spindle Beaings!7 Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing HSEW Type HSEW type is an ai-oil lubicated high-speed angula ball beaing equipped with e-lubicating holes on the oute ing of the HSE type. Because thee is no equiement fo poviding a nozzle hole on the space, the space width can be kept shot, contibuting to the moe compact main spindle and impovement of spindle igidity due to the placement of the beaings on the tool tip side. In addition, lubication eliability is inceased due to the diect lubication fom the oute ing, enabling the eduction of ai consumption and the supplied oil amount. Beaing specification Re-lubicating hole O-ing Cicumfeential oil goove Re-lubicating hole Space with e-lubicating hole Beaings with e-lubicating hole on the oute ing Space with e-lubicating hole (standad beaings) Fig. 9.34 HSEW Type Featues 1. Compact main spindle design is possible due to the shote space 2. Highe e-lubicating efficiency by the diect lubication fom the oute ing 3. Reduced noise level due to the ai eduction effect Pemissible speed ange dmn value 1 4 2 4 6 8 1 12 14 16 18 2 22 24 26 28 5S-2LA-HSEW 25 2 5S-2LA-HSEW9U 25 2 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement) and contact NTN Engineeing fo technical assistance. About chamfeing of e-lubicating hole on the housing Ensue to povide chamfeing on the e-lubicating hole of the housing to avoid damage of oute O-ing when the HSEW type is inseted into the housing (Fig. 9.35). We ecommend that chamfeing is only applied to the hole. About phases of e-lubicating hole on the housing and e-lubicating hole on the oute ing Fo poducing the ai eduction effect, be sue to stagge the position of e-lubicating hole on the housing and e-lubicating hole on the oute ing. Chamfeing Only on the hole: ecommended Chamfeing Oveall cicumfeential goove (chamfeing) Fig. 9.35 Chamfeing of e-lubicating hole on the housing 78

NTN Main Spindle Beaings Data 1 Fo the HSEW type beaings, the tempeatue of the oute ings emains stable even with an ai consumption as low as 2 NR/min (1/2 of the ecommended ai consumption fo standad beaings) at a speed of 18, min -1 (dmn value: 2.25X1 6 ) (Fig. 9.36). Tempeatue incease of oute ing C 6 55 5 45 HSEW type HSE type 4 15 2 25 3 35 4 45 Ai consumptionnl/min Fig. 9.36 Relationship between ai consumption and tempeatue incease Test conditions Test beaing Shaft speed Peload Oil consumption 5S-2LA-HSEW2 5S-2LA-HSE2 (115242 ows) 18 min -1 98 knafte assembled (Fixed position peloading).3 ml/shot (oil shot intevals) HSEW : 1 min, HSE : 5 min Data 2 The HSEW type beaings can opeate at 18, min -1 (dmn value: 2.25X1 6 ) with an oil shot inteval of 2 min (1/4 of the ecommended oil consumption fo standad beaings) (Fig. 9.37). Tempeatue incease of oute ing C 6 55 5 45 HSEW type HSE type Test conditions Test beaing Shaft speed Peload Ai consumption 5S-2LA-HSEW2 5S-2LA-HSE2 (115242 ows) 18 min -1 98 knafte assembled (Fixed position peloading) HSEW : 2NL/min HSE : 4NL/min 4 5 1 15 2 25 Oil shot intevalmin Fig. 9.37 Relationship between oil shot inteval and tempeatue incease Data 3 The HSEW type has achieved educed noise level compaed with the HSE type (Fig. 9.38). Noise value dba 15 1 95 9 85 8 HSEW type HSE type 75 5 1 15 Speed Test conditions Test beaing Shaft speed Peload Ai consumption Oil consumption 5S-2LA-HSEW2 5S-2LA-HSE2 (115242 ows) 18 min -1 98 knafte assembled (Fixed position peloading) HSEW : 2NL/min HSE : 4NL/min.3 ml/shot (oil shot intevals) HSEW : 1 min, HSE : 5 min Fig. 9.38 Compaison of noise levels 79

NTN Main Spindle Beaings!8 Gease-lubicated sealed standad angula contact ball beaings 79LLB and 7LLB, 5S-79LLB and 5S-7LLB types The 79LLB and 7LLB types ae gease-lubicated, eco-fiendly beaings that can achieve stable high-speed opeation with limited tempeatue ise. They can allow, longe sevice life and pesevation of healthy woking envionment fo otating tools with shaft diametes less than 5 mm. Featues 1. Intenal design is optimized fo high-speed opeation and limited tempeatue ise. 2. Longe gease life due to adoption of special gease and non-contact seals fo gease etention. 3. Contact angles of 15 and 25 ae available. 4. The standad types meet special pecision P42 equiements (dimensional pecision JIS P4 and unning accuacy JIS P2). 5. Seals of diffeent colos ae used fo font (black) and back (oange) sides. Beaing configuation can be easily identified by colo. 6. Available with eithe steel o ceamic balls. Beaing specifications Back Font Fig. 9.39 79LLB and 7LLB types Simplified main spindle configuation Due to the optimized intenal stuctue, the 79LLB and 7LLB types can eliably un at a highe speed with gease lubication. The gease lubicating system is vitually fee fom oil mist emission, and contibutes to a simple main spindle stuctue, eduction in envionmental impact and decease in cost. (Fig. 9.4) Ai-oil lubication Gease lubication Simplifies the main spindle stuctue, and educes the initial and opeation costs. Fig. 9.4 Modification of lubication system (ai-oil lubication to gease lubication) Easie handling with 79LLB and 7LLB types The 79LLB and 7LLB types ae pefilled with gease. They can be eadily used afte only wiping away ust peventive oil. Seals of diffeent colos ae used fo the font and back sides of the beaing. Black seals ae used fo the font sides and oange seals ae used fo the back sides, so configuations ae eadily identified by colos. (Table 9.26) Table 9.26 Beaing Combinations and Seal Colos DB set (back faces in combination) DF set (font faces in combination) Oange seal Oange seal Black seal Black seal 8

NTN Main Spindle Beaings Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 7 LLB 25 15 79 LLB 25 15 5S-7 LLB 25 15 5S-79 LLB 25 15 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement) and contact NTN Engineeing fo technical assistance. High-speed test Optimization of the intenal design pomotes stable opeation of dmn value 1.1 1 6. (Figs.9.41 and 9.42) Tempeatue ise of oute ing C 35 3 25 2 15 1 5 76CDw/o jacket cooling 76CDw/ jacket cooling 76ADw/o jacket cooling 76ADw/ jacket cooling 5 1 15 2 25 Speedmin -1 Tested beaing Shaft speed Pe-load afte assembled 76CDLLBDBP42 76ADLLBDBP42 (355132 ows) 25 min -1 18 N5S-76CDLLB 25 N5S-76ADLLB.25.5.75 1. dmn value 1 6 Fig. 9.41 High-speed test esults (76CD, contact angle 15 ) (76AD, contact angle 25 ) Tempeatue ise of oute ing C 35 3 25 2 15 1 5 5S-76CDw/o jacket cooling 5S-76CDw/ jacket cooling 5S-76ADw/o jacket cooling 5S-76ADw/ jacket cooling 5 1 15 2 25 Speedmin -1.5 1. dmn value 1 6 Test conditions Tested beaing Shaft speed Pe-load afte assembled 5S-76CDLLBDBP42 5S-76ADLLBDBP42 (355132 ows) 25 min -1 18 N5S-76CDLLB 25 N5S-76ADLLB Fig. 9.42 High-speed test esults (5S-76CD, contact angle 15 ) (5S-76AD, contact angle 25 ) 81

NTN Main Spindle Beaings!8 Gease-lubicated sealed angula contact ball beaings BNS LLB and 5S-2LA-BNS LLB types By the optimized mateial and intenal stuctue, BNS LLB type beaings have excellent pefomance at highe speeds. This helps to educe pollution and cost. Beaing specification Featues 1. Adoption of special mateials and unique intenal design impove anti-seizue popeties (15 times bette than the conventional type) and wea esistance (6 times bette than the conventional type). 2. Optimized intenal design enables high-speed opeation and high igidity. 3. Available with eithe steel o ceamic balls. 4. Adoption of gease pockets, special gease, and non-contact seals impoves sevice life of the gease. Fig. 9.43 BNS LLB type Simplified main spindle configuation BNS LLB type beaings can eliably opeate at a highe speed with gease lubication. The gease lubication system is vitually fee fom oil mist emission can simplify the main spindle stuctue, educe pollution and decease cost (Fig. 9.44). Ai-oil lubication Gease lubication Capable of eplacing ai-oil lubicated beaings up to dmn value of 1,4,. Simplifies the main spindle stuctue and educes the initial and opeating costs. Fig. 9.44 Modification of lubication system (ai-oil lubication to gease lubication) Easie handling with BNS LLB type The BNS LLB type has been packed with gease in advance. They can be used afte wiping away ust peventive oil. Seals in diffeent colos ae used fo the font and back sides of the beaings. Black seals ae used fo the font sides and oange seals ae used fo the back sides, so configuations can be easily identified by colo. (Table 9.27) Table 9.27 Beaing Combinations and Seal Colos DB set (back faces in combination) DF set (font faces in combination) Oange seal Oange seal Black seal Black seal 82

NTN Main Spindle Beaings Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 2LA-BNS LLB 25 15, 2 2LA-BNS9 LLB 25 15, 2 5S-2LA-BNS LLB 25 15, 2 5S-2LA-BNS9 LLB 25 15, 2 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine on which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline (fo two-ow aangement) and contact NTN Engineeing fo technical assistance. Tempeatue incease 5S-2LA-BNS LLB type beaings exhibit stable tempeatue incease up to a dmn value of 1,4, (Fig. 9.45). Tempeatue incease of oute ing C 2 15 1 5 2 4 6 8 1 12 Speedmin -1 Test conditions Test beaing Shaft speed Oute casing cooling 5S-2LA-BNS2 LLBDB (115242 ows) 11 min -1 Povided.5 1. 1.5 dmn value 1 6 Fig. 9.45 High-speed test esults Duability test As a esult of optimized design (such as gease esevoi) and special gease, 5S-2LA-BNS LLB type beaing have successfully achieved continuous opeation in excess of 2, hous at a dmn value of 1,4, (Fig. 9.46). Test conditions BNS type HSB type 65h 2 h o longe Moe than 25 times Test beaing Shaft speed Peload Oute casing cooling 5S-2LA-BNS2 LLBDB 5S-HSB2C (115242 ows) 11 min -1 Afte assembly, Povided Duation, h Fig. 9.46 Duability test esults 83

Main Spindle Beaings @ Dimension tables fo angula contact ball beaings Standad angula contact ball beaings (steel ball type) 78 seies Contact angle 15 d 25 17mm B 1 D D1 d d1 D2 a pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 785C 25 37 7.3.15 5.5 3.85 515 39 1.4 16 16.2 27 1 36 1 786C 3 42 7.3.15 5.35 4.5 545 46 1.2 122 16.5 23 3 31 1 787C 35 47 7.3.15 5.8 5.25 59 535 1.41 144 16.4 2 5 27 3 788C 4 52 7.3.15 6.5 5.75 615 585 1.57 16 16.2 18 3 24 3 789C 45 58 7.3.15 6.25 6.25 64 64 1.73 176 16. 16 3 21 7 781C 5 65 7.3.15 7.9 8.5 85 82 2.31 236 16.1 14 6 19 5 7811C 55 72 9.3.15 13.1 12.7 1 33 1 3 5.55 565 16.4 13 2 17 6 7812C 6 78 1.3.15 13.4 13.6 1 37 1 39 6. 61 16.3 12 2 16 2 7813C 65 85 1.6.3 14.1 14.9 1 44 1 52 5.3 54 16.2 11 2 14 9 7814C 7 9 1.6.3 14.5 15.8 1 47 1 61 7.1 72 16.1 1 5 14 7815C 75 95 1.6.3 14.8 16.7 1 51 1 7 6. 615 16. 9 9 13 2 7816C 8 1 1.6.3 15.1 17.6 1 54 1 79 7.95 81 15.9 9 3 12 4 7817C 85 11 13 1.6 22.1 24.7 2 25 2 52 1.7 1 9 16.1 8 6 11 5 7818C 9 115 13 1.6 22.7 26.1 2 32 2 67 1.5 1 7 16.1 8 2 1 9 7819C 95 12 13 1.6 23.4 27.6 2 38 2 82 12.1 1 24 16. 7 8 1 4 782C 1 125 13 1.6 23.5 28.3 2 4 2 89 12.5 1 27 16. 7 5 1 7821C 15 13 13 1.6 24.1 29.8 2 46 3 5 13.2 1 34 15.9 7 1 9 5 7822C 11 14 16 1.6 34.5 42.5 3 55 4 35 21. 2 14 16.1 6 7 9 7824C 12 15 16 1.6 35. 44.5 3 6 4 55 22.1 2 26 16. 6 2 8 3 7826C 13 165 18 1.1.6 47. 59.5 4 75 6 5 28.4 2 9 16.1 5 7 7 6 7828C 14 175 18 1.1.6 47.5 62.5 4 85 6 35 3. 3 5 16. 5 3 7 1 783C 15 19 2 1.1.6 6.5 79.5 6 15 8 1 48.5 4 95 16.1 4 9 6 6 7832C 16 2 2 1.1.6 62. 83.5 6 3 8 5 41. 4 2 16. 4 7 6 2 7834C 17 215 22 1.1.6 76. 12 7 75 1 4 49. 4 95 16.1 4 4 5 8 1 Minimum allowable value fo cone adius dimension o 1. 84

Main Spindle Beaings 1as as da Db as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 D1 D2 min max max max max 7.7.8.21 28.6 33.2 34.6 27.5 34.5 35.8.3.15 785C 8.3 1.1.25 33.6 38.4 39.6 32.5 39.5 4.8.3.15 786C 9. 1.3.28 38.6 43.4 44.6 37.5 44.5 45.8.3.15 787C 9.7 1.4.31 43.6 48.4 49.6 42.5 49.5 5.8.3.15 788C 1.4 1.6.39 49.1 53.9 55.1 47.5 55.5 56.8.3.15 789C 11.2 1.8.49 54.8 6.2 61.6 52.5 62.5 63.8.3.15 781C 13. 3.2.79 6.1 66.9 69.2 57.5 69.5 7.8.3.15 7811C 14.3 3.9.1 65.6 72.4 74.7 62.5 75.5 76.8.3.15 7812C 15.1 4.4.12 71.4 78.6 8.7 69.5 8.5 82.5.6.3 7813C 15.7 5.1.13 76.6 83.4 85.7 74.5 85.5 87.5.6.3 7814C 16.4 5..14 81.4 88.6 9.7 79.5 9.5 92.5.6.3 7815C 17.1 5.7.15 86.6 93.4 95.7 84.5 95.5 97.5.6.3 7816C 19.6 9.8.26 93.1 11.9 14.9 9.5 14.5 15.5 1.6 7817C 2.3 11.27 98. 17. 19.8 95.5 19.5 11.5 1.6 7818C 2.9 11.28 13.1 111.9 114.8 1.5 114.5 115.5 1.6 7819C 21.6 12.3 18.1 116.9 119.8 15.5 119.5 12.5 1.6 782C 22.3 13.31 113.1 122. 124.8 11.5 124.5 125.5 1.6 7821C 24.8 19.49 119.8 13.2 134. 115.5 134.5 135.5 1.6 7822C 26.1 2.52 129.8 14.2 144. 125.5 144.5 145.5 1.6 7824C 28.8 28.91 141.3 153.7 158.1 137 158 16.5 1.6 7826C 3.1 3.97 151.3 163.7 168.1 147 168 17.5 1.6 7828C 32.8 45 1.33 163.4 177.1 182.2 157 183 185.5 1.6 783C 34.2 46 1.41 172.9 187.1 192.2 167 193 195.5 1.6 7832C 36.8 53 1.87 184.4 2.6 26.3 177 28 21.5 1.6 7834C 85

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 79 seies Contact angle 15 d 1 17mm B 1 B 1 D D1d2 d d1 D2 D D1 d d1 D2 a d a d 86 Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 79UC 1 22 6.3.15 3.2 1.65 325 169 2.4 245 14.2 73 2 117 2 791UC 12 24 6.3.15 3.35 1.86 34 189 2.61 267 14.7 65 1 14 1 792UC 15 28 7.3.15 5.1 2.9 52 296 3.85 395 14.4 54 5 87 2 793UC 17 3 7.3.15 5.35 3.2 545 325 4.15 425 14.8 49 9 79 8 794UC 2 37 9.3.15 7.65 4.9 78 5 6.45 655 14.9 41 1 65 8 795UC 25 42 9.3.15 8.15 5.75 835 59 7.35 75 15.5 35 56 796UC 3 47 9.3.15 8.6 6.6 88 675 8.2 84 15.9 3 4 48 7 797UC 35 55 1.6.3 13.7 1.3 1 4 1 5 13.7 1 4 15.5 26 41 7 798UC 4 62 12.6.3 14.5 11.8 1 48 1 2 15.4 1 57 15.9 23 36 8 799UC 45 68 12.6.3 17.9 14.8 1 83 1 51 19.4 1 98 15.8 2 7 33 2 791UC 5 72 12.6.3 18.9 16.6 1 93 1 7 21.4 2 19 16.1 19 2 3 7 7911UC 55 8 13 1.6 19.7 18.5 2 1 1 89 23.4 2 39 16.3 17 4 27 8 7912UC 6 85 13 1.6 2.5 2.3 2 9 2 8 25.5 2 6 16.5 16 2 25 9 7913UC 65 9 13 1.6 2.8 21.2 2 12 2 16 26.5 2 7 16.5 15 1 24 2 7914UC 7 1 16 1.6 29.7 3. 3 5 3 1 38. 3 85 16.4 13 8 22 1 7915UC 75 15 16 1.6 3. 31.5 3 5 3 25 39.5 4 16.5 13 2 8 7916UC 8 11 16 1.6 3.5 33. 3 1 3 35 41. 4 2 16.5 12 3 19 6 7917UC 85 12 18 1.1.6 41. 44. 4 2 4 5 54. 5 5 16.5 11 4 18 3 7918UC 9 125 18 1.1.6 41.5 46. 4 25 4 7 56. 5 7 16.6 1 9 17 4 7919UC 95 13 18 1.1.6 42.5 47.5 4 3 4 85 58. 5 95 16.5 1 4 16 7 792UC 1 14 2 1.1.6 54.5 61. 5 55 6 2 76.5 7 8 16.5 9 8 15 6 7921UC 15 145 2 1.1.6 55. 63.5 5 6 6 5 79.5 8 1 16.6 9 4 15 7922UC 11 15 2 1.1.6 56. 65.5 5 7 6 7 82.5 8 4 16.5 9 14 4 7924UC 12 165 22 1.1.6 69. 81.5 7 5 8 3 1 1 2 16.6 8 2 13 2 7926UC 13 18 24 1.5 1 85. 12 8 65 1 4 128 13 16.5 7 6 12 1 7928CT1B 14 19 24 1.5 1 83.5 11 8 5 1 3 48. 4 9 16.5 5 1 6 6 793CT1B 15 21 28 2 1 18 132 11 13 4 6.5 6 2 16.5 4 7 6 1 7932CT1B 16 22 28 2 1 19 136 11 1 13 9 63. 6 4 16.5 4 4 5 7 7934CT1B 17 23 28 2 1 113 145 11 5 14 8 79. 8 5 16.4 4 2 5 4 1 Minimum allowable value fo cone adius dimension o 1.

Main Spindle Beaings 1as as da Db as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 5.2.4.1 14.3 13.5 17.7 19.4 12.5 19.5 2.8.3.15 79UC 5.4.4.1 16.3 15.5 19.7 21.4 14.5 21.5 22.8.3.15 791UC 6.4.8.2 19.3 18.3 23.7 25.8 17.5 25.5 26.8.3.15 792UC 6.7.8.2 21.3 2.3 25.7 27.8 19.5 27.5 28.8.3.15 793UC 8.3 1.5.4 25.9 24.7 31.1 33.6 22.5 34.5 35.8.3.15 794UC 9. 1.8.4 3.9 29.7 36.1 38.6 27.5 39.5 4.8.3.15 795UC 9.7 2..5 35.9 34.7 41.1 43.6 32.5 44.5 45.8.3.15 796UC 11.1 3.4.7 41.6 39.9 48.4 51.7 39.5 5.5 52.5.6.3 797UC 12.9 4.7.11 47.6 45.9 54.4 57.8 44.5 57.5 59.5.6.3 798UC 13.6 5.9.12 52.7 5.8 6.4 64. 49.5 63.5 65.5.6.3 799UC 14.2 6.2.13 57.2 55.3 64.9 68.5 54.5 67.5 69.5.6.3 791UC 15.6 7.5.18 63.7 61.8 71.4 75.1 6.5 74.5 75.5 1.6 7911UC 16.3 8..19 68.7 66.8 76.4 8.1 65.5 79.5 8.5 1.6 7912UC 16.9 8.6.21 73.7 71.8 81.4 85.1 7.5 84.5 85.5 1.6 7913UC 19.4 14.34 8.3 78. 89.7 94.3 75.5 94.5 95.5 1.6 7914UC 2.1 15.36 85.3 83. 94.7 99.3 8.5 99.5 1.5 1.6 7915UC 2.8 16.38 9.8 88.5 1.2 14.8 85.5 14.5 15.5 1.6 7916UC 22.8 22.54 96.9 94.3 18.1 113.5 92 113 115.5 1.6 7917UC 23.5 23.56 11.9 99.3 113.1 118.5 97 118 12.5 1.6 7918UC 24.1 24.59 16.9 14.3 118.1 123.5 12 123 125.5 1.6 7919UC 26.1 33.81 113.6 11.5 126.4 132.7 17 133 135.5 1.6 792UC 26.8 34.84 118.6 115.5 131.4 137.7 112 138 14.5 1.6 7921UC 27.5 36.87 123.6 12.5 136.4 142.7 117 143 145.5 1.6 7922UC 3.2 48 1.19 135.2 131.7 149.8 156.8 127 158 16.5 1.6 7924UC 32.9 63 1.57 146.9 143. 163.2 171. 138.5 171.5 174.5 1.5 1 7926UC 34.2 67 1.66 156. 174.1 18.5 148.5 181.5 184.5 1.5 1 7928CT1B 38.2 1 2.59 169.5 19.5 198. 16 2 24.5 2 1 793CT1B 39.6 16 2.72 179.5 2.6 28. 17 21 214.5 2 1 7932CT1B 4.9 19 2.89 19. 21.5 218. 18 22 224.5 2 1 7934CT1B 87

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 79 seies Contact angle 25 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 79UAD 1 22 6.3.15 3.5 1.58 31 161 1.77 18 63 4 12 5 791UAD 12 24 6.3.15 3.2 1.77 325 181 1.92 196 56 4 91 1 792UAD 15 28 7.3.15 4.85 2.77 495 283 2.81 287 47 2 76 3 793UAD 17 3 7.3.15 5.1 3.5 52 31 3. 31 43 2 69 8 794UAD 2 37 9.3.15 7.25 4.65 74 475 4.7 48 35 6 57 5 795UAD 25 42 9.3.15 7.75 5.5 79 56 5.35 545 3 3 49 796UAD 3 47 9.3.15 8.15 6.3 83 64 6. 61 26 4 42 6 797UAD 35 55 1.6.3 13. 9.75 1 32 995 1.1 1 3 22 6 36 4 798UAD 4 62 12.6.3 13.7 11.2 1 4 1 14 11.3 1 16 19 9 32 2 799UAD 45 68 12.6.3 17. 14.1 1 73 1 44 14.6 1 49 18 29 791UAD 5 72 12.6.3 17.9 15.8 1 82 1 61 16.2 1 65 16 6 26 9 7911UAD 55 8 13 1.6 18.6 17.5 1 9 1 79 17.7 1 8 15 24 3 7912UAD 6 85 13 1.6 19.4 19.1 1 97 1 95 19.2 1 96 14 22 6 7913UAD 65 9 13 1.6 19.6 19.7 2 2 1 19.9 2 3 13 1 21 2 7914UAD 7 1 16 1.6 28. 28.6 2 86 2 92 27.9 2 84 11 9 19 3 7915UAD 75 15 16 1.6 28.4 29.6 2 9 3 29. 2 96 11 3 18 2 7916UAD 8 11 16 1.6 28.7 3.5 2 93 3 1 3. 3 5 1 6 17 2 7917UAD 85 12 18 1.1.6 38.5 41.5 3 95 4 25 39.5 4 9 9 16 7918UAD 9 125 18 1.1.6 39.5 43. 4 4 4 41. 4 2 9 4 15 3 7919UAD 95 13 18 1.1.6 4. 44.5 4 5 4 5 42.5 4 35 9 14 6 792UAD 1 14 2 1.1.6 51. 57.5 5 2 5 85 56. 5 75 8 5 13 7 7921UAD 15 145 2 1.1.6 52. 59. 5 3 6 5 58.5 5 95 8 1 13 1 7922UAD 11 15 2 1.1.6 52.5 61. 5 4 6 25 6.5 6 15 7 8 12 6 7924UAD 12 165 22 1.1.6 65. 76. 6 65 7 75 73.5 7 5 7 1 11 5 7926UAD 13 18 24 1.5 1 8. 95. 8 15 9 7 94. 9 55 6 6 1 6 1 Minimum allowable value fo cone adius dimension o 1. 88

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 6.8.4.1 14.3 13.5 17.7 19.4 12.5 19.5 2.8.3.15 79UAD 7.2.4.1 16.3 15.5 19.7 21.4 14.5 21.5 22.8.3.15 791UAD 8.6.8.2 19.3 18.3 23.7 25.7 17.5 25.5 26.8.3.15 792UAD 9..8.2 21.3 2.3 25.7 27.7 19.5 27.5 28.8.3.15 793UAD 11.2 1.5.4 25.9 24.7 31.1 33.6 22.5 34.5 35.8.3.15 794UAD 12.4 1.8.4 3.9 29.7 36.1 38.6 27.5 39.5 4.8.3.15 795UAD 13.5 2..5 35.9 34.7 41.1 43.6 32.5 44.5 45.8.3.15 796UAD 15.6 3.4.7 41.6 39.9 48.4 51.7 39.5 5.5 52.5.6.3 797UAD 18. 4.7.11 47.6 45.9 54.4 57.7 44.5 57.5 59.5.6.3 798UAD 19.2 5.9.12 52.7 5.8 6.4 64. 49.5 63.5 65.5.6.3 799UAD 2.3 6.2.13 57.2 55.3 64.9 68.5 54.5 67.5 69.5.6.3 791UAD 22.3 7.5.18 63.7 61.8 71.4 75.1 6.5 74.5 75.5 1.6 7911UAD 23.5 8..19 68.7 66.8 76.4 8. 65.5 79.5 8.5 1.6 7912UAD 24.6 8.6.21 73.7 71.8 81.4 85. 7.5 84.5 85.5 1.6 7913UAD 27.9 14.34 8.3 78. 89.7 94.3 75.5 94.5 95.5 1.6 7914UAD 29.1 15.36 85.3 83. 94.7 99.3 8.5 99.5 1.5 1.6 7915UAD 3.4 16.38 9.8 88.5 1.2 14.7 85.5 14.5 15.5 1.6 7916UAD 33. 22.54 96.9 94.3 18.1 113.5 92 113 115.5 1.6 7917UAD 34.2 23.56 11.9 99.3 113.1 118.5 97 118 12.5 1.6 7918UAD 35.3 24.59 16.9 14.3 118.1 123.4 12 123 125.5 1.6 7919UAD 38.1 33.81 113.6 11.5 126.4 132.6 17 133 135.5 1.6 792UAD 39.3 34.84 118.6 115.5 131.4 137.6 112 138 14.5 1.6 7921UAD 4.4 36.87 123.6 12.5 136.4 142.6 117 143 145.5 1.6 7922UAD 44.4 48 1.19 135.2 131.7 149.8 156.7 127 158 16.5 1.6 7924UAD 48.3 63 1.57 146.9 143. 163.2 17.9 138.5 171.5 174.5 1.5 1 7926UAD 89

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 79 seies Contact angle 3 d 1 13mm B 1 B 1 D D1d2 d d1 D2 D D1 d d1 D2 a d a d Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 79U 1 22 6.3.15 2.95 1.53 3 156 1.36 139 53 7 73 2 791U 12 24 6.3.15 3.1 1.71 315 175 1.48 151 47 7 65 792U 15 28 7.3.15 4.7 2.68 48 274 2.14 218 4 54 5 793U 17 3 7.3.15 4.9 2.95 5 3 2.29 234 36 6 49 8 794U 2 37 9.3.15 7. 4.5 715 46 3.6 365 3 1 41 1 795U 25 42 9.3.15 7.45 5.3 76 54 4.1 415 25 6 35 796U 3 47 9.3.15 7.8 6.5 8 615 4.6 465 22 3 3 4 797U 35 55 1.6.3 12.5 9.4 1 27 96 7.85 8 19 1 26 798U 4 62 12.6.3 13.1 1.7 1 34 1 1 8.75 895 16 9 23 799U 45 68 12.6.3 16.3 13.6 1 66 1 38 11.4 1 16 15 2 2 7 791U 5 72 12.6.3 17.2 15.2 1 75 1 55 12.6 1 28 14 1 19 2 7911U 55 8 13 1.6 17.8 16.8 1 82 1 72 13.8 1 41 12 7 17 4 7912U 6 85 13 1.6 18.6 18.2 1 89 1 85 15. 1 53 11 9 16 2 7913U 65 9 13 1.6 18.8 18.8 1 91 1 91 15.6 1 59 11 1 15 1 7914U 7 1 16 1.6 26.9 27.3 2 74 2 78 21.5 2 19 1 1 13 8 7915U 75 15 16 1.6 27.2 28.2 2 78 2 87 22.3 2 28 9 6 13 7916U 8 11 16 1.6 27.5 29.1 2 81 2 97 23.2 2 37 9 12 3 7917U 85 12 18 1.1.6 37. 39.5 3 8 4 5 3.5 3 1 8 4 11 4 7918U 9 125 18 1.1.6 37.5 41. 3 85 4 15 31.5 3 2 8 1 9 7919U 95 13 18 1.1.6 38. 42. 3 9 4 3 32.5 3 35 7 6 1 4 792U 1 14 2 1.1.6 49. 54.5 5 5 55 43.5 4 45 7 2 9 8 7921U 15 145 2 1.1.6 5. 56.5 5 1 5 75 45. 4 6 6 9 9 4 7922U 11 15 2 1.1.6 5.5 58. 5 15 5 9 46.5 4 75 6 6 9 7924U 12 165 22 1.1.6 62.5 72.5 6 35 7 35 56.5 5 75 6 8 2 7926U 13 18 24 1.5 1 76.5 9.5 7 8 9 25 72.5 7 4 5 5 7 6 1 Minimum allowable value fo cone adius dimension o 1. 9

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.8 1.39.76 1.78.63 1.24 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.33 1.66 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 7.7.4.1 14.3 13.5 17.7 19.3 12.5 19.5 2.8.3.15 79U 8.2.4.1 16.3 15.5 19.7 21.3 14.5 21.5 22.8.3.15 791U 9.8.8.2 19.3 18.3 23.7 25.7 17.5 25.5 26.8.3.15 792U 1.3.8.2 21.3 2.3 25.7 27.7 19.5 27.5 28.8.3.15 793U 12.8 1.5.4 25.9 24.7 31.1 33.5 22.5 34.5 35.8.3.15 794U 14.2 1.8.4 3.9 29.7 36.1 38.5 27.5 39.5 4.8.3.15 795U 15.7 2..5 35.9 34.7 41.1 43.5 32.5 44.5 45.8.3.15 796U 18.1 3.4.7 41.6 39.9 48.4 51.6 39.5 5.5 52.5.6.3 797U 2.8 4.7.11 47.6 45.9 54.4 57.7 44.5 57.5 59.5.6.3 798U 22.4 5.9.12 52.7 5.8 6.4 64. 49.5 63.5 65.5.6.3 799U 23.7 6.2.13 57.2 55.3 64.9 68.4 54.5 67.5 69.5.6.3 791U 26.1 7.5.18 63.7 61.8 71.4 75. 6.5 74.5 75.5 1.6 7911U 27.5 8..19 68.7 66.8 76.4 8. 65.5 79.5 8.5 1.6 7912U 29. 8.6.21 73.7 71.8 81.4 85. 7.5 84.5 85.5 1.6 7913U 32.6 14.34 8.3 78. 89.7 94.2 75.5 94.5 95.5 1.6 7914U 34.1 15.36 85.3 83. 94.7 99.2 8.5 99.5 1.5 1.6 7915U 35.7 16.38 9.8 88.5 1.2 14.7 85.5 14.5 15.5 1.6 7916U 38.7 22.54 96.9 94.3 18.1 113.4 92 113 115.5 1.6 7917U 4.2 23.56 11.9 99.3 113.1 118.4 97 118 12.5 1.6 7918U 41.6 24.59 16.9 14.3 118.1 123.4 12 123 125.5 1.6 7919U 44.8 33.81 113.6 11.5 126.4 132.6 17 133 135.5 1.6 792U 46.2 34.84 118.6 115.5 131.4 137.6 112 138 14.5 1.6 7921U 47.7 36.87 123.6 12.5 136.4 142.6 117 143 145.5 1.6 7922U 52.3 48 1.19 135.2 131.7 149.8 156.7 127 158 16.5 1.6 7924U 56.9 63 1.57 146.9 143. 163.2 17.9 138.5 171.5 174.5 1.5 1 7926U 91

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 7 seies Contact angle 15 d 1 2mm B 1 B 1 D D1d2 d d1 D2 D D1 d d1 D2 a d a d 92 Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 7UC 1 26 8.3.15 5.3 2.48 54 253 3.8 39 12.6 65 8 15 3 71UC 12 28 8.3.15 5.8 2.93 595 299 4.25 435 13.4 57 1 91 4 72UC 15 32 9.3.15 6.6 3.7 675 375 5.15 525 14.1 49 9 79 8 73UC 17 35 1.3.15 8.25 4.55 84 46 6.6 67 13.8 45 1 72 1 74UC 2 42 12.6.3 11.1 6.6 1 13 67 9.6 98 14.1 37 2 59 5 75UC 25 47 12.6.3 12.3 8. 1 25 815 11.3 1 15 14.7 32 5 52 1 76UC 3 55 13 1.6 15.8 11. 1 62 1 12 15.4 1 57 14.9 27 2 43 6 77UC 35 62 14 1.6 2. 14.6 2 4 1 49 19.5 1 99 15. 24 2 38 7 78UC 4 68 15 1.6 21.4 16.8 2 18 1 72 22. 2 25 15.4 21 7 34 7 79UC 45 75 16 1.6 25.3 2.4 2 58 2 8 27.1 2 77 15.4 19 5 31 2 71UC 5 8 16 1.6 26.9 23.1 2 74 2 35 3. 3 1 15.7 18 28 8 711UC 55 9 18 1.1.6 35.5 3. 3 6 3 1 39. 4 15.5 16 2 25 9 712UC 6 95 18 1.1.6 36.5 32.5 3 7 3 3 41.5 4 2 15.7 15 1 24 2 713UC 65 1 18 1.1.6 38.5 36. 3 9 3 65 45.5 4 65 15.9 14 2 22 7 714UC 7 11 2 1.1.6 48.5 45. 4 95 4 6 59. 6 5 15.7 13 2 8 715UC 75 115 2 1.1.6 49.5 48. 5 5 4 9 62. 6 35 15.9 12 3 19 7 716UC 8 125 22 1.1.6 6.5 58. 6 2 5 9 74.5 7 6 15.7 11 4 18 3 717UC 85 13 22 1.1.6 62. 61.5 6 35 6 25 78.5 8 15.9 1 9 17 4 718UC 9 14 24 1.5 1 74. 72.5 7 55 7 4 95. 9 7 15.7 1 2 16 3 719UC 95 145 24 1.5 1 76. 76.5 7 75 7 8 1 1 2 15.9 9 8 15 6 72UC 1 15 24 1.5 1 77.5 81. 7 9 8 25 14 1 6 16. 9 4 15 721UC 15 16 26 2 1 91. 93.5 9 25 9 55 12 12 3 15.9 8 8 14 1 722UC 11 17 28 2 1 14 16 1 6 1 9 14 14 2 15.7 8 4 13 4 724UC 12 18 28 2 1 16 113 1 8 11 5 147 14 9 16. 7 8 12 5 726UC 13 2 33 2 1 133 144 13 6 14 7 186 19 15.9 7 1 11 4 728CT1B 14 21 33 2 1 132 145 13 5 14 8 69. 7 5 16. 4 8 6 2 73CT1B 15 225 35 2.1 1.1 151 168 15 4 17 2 81. 8 3 16. 4 5 5 8 732CT1B 16 24 38 2.1 1.1 171 193 17 4 19 7 87.5 8 95 16. 4 2 5 4 734CT1B 17 26 42 2.1 1.1 25 234 2 9 23 9 118 12 15.9 3 9 5 1 736CT1B 18 28 46 2.1 1.1 241 29 24 5 29 6 144 14 7 15.7 3 7 4 7 738CT1B 19 29 46 2.1 1.1 247 35 25 1 31 5 151 15 4 15.9 3 5 4 5 74CT1B 2 31 51 2.1 1.1 277 355 28 2 36 173 17 6 15.7 3 3 4 3 1 Minimum allowable value fo cone adius dimension o 1.

Main Spindle Beaings 1as as da Db as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 6.4.9.19 15.2 14. 2.4 22.9 12.5 23.5 24.8.3.15 7UC 6.8 1..21 17.9 16.7 23.1 25.6 14.5 25.5 26.8.3.15 71UC 7.7 1.3.3 2.9 19.7 26.1 28.7 17.5 29.5 3.8.3.15 72UC 8.5 1.8.37 23. 21.6 29. 32. 19.5 32.5 33.8.3.15 73UC 1.3 2.9.67 28.1 26.4 34.9 38.4 24.5 37.5 39.5.6.3 74UC 1.9 3.3.79 32.6 3.9 39.4 42.9 29.5 42.5 44.5.6.3 75UC 12.3 4.8.11 39.2 37.3 46.9 5.7 35.5 49.5 5.5 1.6 76UC 13.5 6.3.15 44.2 42.2 52.8 57. 4.5 56.5 57.5 1.6 77UC 14.8 7.4.19 49.7 47.7 58.3 62.5 45.5 62.5 63.5 1.6 78UC 16.1 9.4.24 55.3 53. 64.7 69.4 5.5 69.5 7.5 1.6 79UC 16.8 11.26 6.3 58. 69.7 74.4 55.5 74.5 75.5 1.6 71UC 18.8 16.38 66.9 64.3 78.1 83.6 62 83 85.5 1.6 711UC 19.4 17.41 71.9 69.3 83.1 88.6 67 88 9.5 1.6 712UC 2.1 18.44 76.9 74.3 88.1 93.5 72 93 95.5 1.6 713UC 22.1 24.61 83.6 8.5 96.4 12.7 77 13 15.5 1.6 714UC 22.8 26.64 88.6 85.5 11.4 17.7 82 18 11.5 1.6 715UC 24.8 34.86 95.2 91.7 19.8 116.9 87 118 12.5 1.6 716UC 25.5 36.9 1.2 96.7 114.8 121.9 92 123 125.5 1.6 717UC 27.5 47 1.17 16.9 13. 123.2 131.1 98.5 131.5 134.5 1.5 1 718UC 28.2 49 1.22 111.9 18. 128.2 136.1 13.5 136.5 139.5 1.5 1 719UC 28.8 51 1.27 116.9 113. 133.2 141.1 18.5 141.5 144.5 1.5 1 72UC 3.8 7 1.58 123.5 119.2 141.5 15.2 115 15 154.5 2 1 721UC 32.9 83 1.98 13.2 125.4 149.9 159.4 12 16 164.5 2 1 722UC 34.2 9 2.11 14.2 135.4 159.9 169.4 13 17 174.5 2 1 724UC 38.7 131 3.25 153.9 148.5 176.2 187.1 14 19 194.5 2 1 726UC 4. 137 3.44 162.6 187.4 196.3 15 2 24.5 2 1 728CT1B 42.7 166 4.19 174.2 2.8 21.5 162 213 218 2 1 73CT1B 45.9 214 5.14 185.5 214.5 224.6 172 228 233 2 1 732CT1B 49.9 278 6.94 199. 231. 242.9 182 248 253 2 1 734CT1B 53.9 36 9.12 212. 248. 261.2 192 268 273 2 1 736CT1B 55.2 375 9.53 222. 258. 271.2 22 278 283 2 1 738CT1B 59.8 492 12.3 235. 275. 289.5 212 298 33 2 1 74CT1B 93

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 7 seies Contact angle 25 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 7UAD 1 26 8.3.15 5.15 2.4 525 244 2.77 283 57 92 1 71UAD 12 28 8.3.15 5.6 2.82 57 287 3.1 315 49 5 8 72UAD 15 32 9.3.15 6.35 3.55 645 36 3.75 38 43 2 69 8 73UAD 17 35 1.3.15 7.9 4.35 85 445 4.85 495 39 63 1 74UAD 2 42 12.6.3 1.6 6.3 1 8 645 7.1 72 32 2 52 1 75UAD 25 47 12.6.3 11.7 7.65 1 19 78 8.3 845 28 2 45 6 76UAD 3 55 13 1.6 15.1 1.5 1 54 1 7 11.5 1 17 23 6 38 1 77UAD 35 62 14 1.6 19. 13.9 1 94 1 42 14.3 1 46 2 9 33 8 78UAD 4 68 15 1.6 2.3 16. 2 7 1 63 16.1 1 65 18 8 3 4 79UAD 45 75 16 1.6 24. 19.4 2 45 1 98 19.9 2 3 16 9 27 3 71UAD 5 8 16 1.6 25.5 21.9 2 6 2 23 22.2 2 26 15 6 25 2 711UAD 55 9 18 1.1.6 33.5 28.7 3 4 2 93 28.6 2 92 14 22 6 712UAD 6 95 18 1.1.6 34.5 3.5 3 5 3 15 3. 3 1 13 1 21 2 713UAD 65 1 18 1.1.6 36. 34. 3 7 3 5 33.5 3 4 12 3 19 9 714UAD 7 11 2 1.1.6 46. 43. 4 7 4 35 43.5 4 45 11 3 18 2 715UAD 75 115 2 1.1.6 47. 45.5 4 8 4 65 45.5 4 65 1 7 17 3 716UAD 8 125 22 1.1.6 57.5 55. 5 85 5 6 55. 5 6 9 9 16 717UAD 85 13 22 1.1.6 58.5 58.5 6 5 95 57.5 5 85 9 4 15 3 718UAD 9 14 24 1.5 1 7. 69. 7 15 7 5 7. 7 15 8 8 14 3 719UAD 95 145 24 1.5 1 71.5 73. 7 3 7 4 73.5 7 5 8 5 13 7 72UAD 1 15 24 1.5 1 73.5 76.5 7 5 7 8 77. 7 85 8 1 13 1 721UAD 15 16 26 2 1 86. 89. 8 75 9 5 88. 9 7 7 12 4 722UAD 11 17 28 2 1 98.5 11 1 1 1 3 13 1 5 7 3 11 7 724UAD 12 18 28 2 1 11 17 1 3 1 9 18 11 6 8 1 9 726UAD 13 2 33 2 1 126 136 12 9 13 9 137 14 6 2 9 9 1 Minimum allowable value fo cone adius dimension o 1. 94

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 8.2.9.19 15.2 14. 2.4 22.9 12.5 23.5 24.8.3.15 7UAD 8.8 1..21 17.9 16.7 23.1 25.6 14.5 25.5 26.8.3.15 71UAD 1. 1.3.3 2.9 19.7 26.1 28.6 17.5 29.5 3.8.3.15 72UAD 11.1 1.8.37 23. 21.6 29. 32. 19.5 32.5 33.8.3.15 73UAD 13.4 2.9.67 28.1 26.4 34.9 38.3 24.5 37.5 39.5.6.3 74UAD 14.5 3.3.79 32.6 3.9 39.4 42.8 29.5 42.5 44.5.6.3 75UAD 16.6 4.8.11 39.2 37.3 46.9 5.7 35.5 49.5 5.5 1.6 76UAD 18.4 6.3.15 44.2 42.2 52.8 56.9 4.5 56.5 57.5 1.6 77UAD 2.2 7.4.19 49.7 47.7 58.3 62.5 45.5 62.5 63.5 1.6 78UAD 22.1 9.4.24 55.3 53. 64.7 69.3 5.5 69.5 7.5 1.6 79UAD 23.2 11.26 6.3 58. 69.7 74.3 55.5 74.5 75.5 1.6 71UAD 26. 16.38 66.9 64.3 78.1 83.5 62 83 85.5 1.6 711UAD 27.2 17.41 71.9 69.3 83.1 88.5 67 88 9.5 1.6 712UAD 28.3 18.44 76.9 74.3 88.1 93.5 72 93 95.5 1.6 713UAD 31.1 24.61 83.6 8.5 96.4 12.7 77 13 15.5 1.6 714UAD 32.3 26.64 88.6 85.5 11.4 17.7 82 18 11.5 1.6 715UAD 35. 34.86 95.2 91.7 19.8 116.9 87 118 12.5 1.6 716UAD 36.2 36.9 1.2 96.7 114.8 121.9 92 123 125.5 1.6 717UAD 39. 47 1.17 16.9 13. 123.2 131. 98.5 131.5 134.5 1.5 1 718UAD 4.1 49 1.22 111.9 18. 128.2 136. 13.5 136.5 139.5 1.5 1 719UAD 41.3 51 1.27 116.9 113. 133.2 141. 18.5 141.5 144.5 1.5 1 72UAD 44.1 7 1.58 123.5 119.2 141.5 15.2 115 15 154.5 2 1 721UAD 46.8 83 1.98 13.2 125.4 149.9 159.3 12 16 164.5 2 1 722UAD 49.2 9 2.11 14.2 135.4 159.9 169.3 13 17 174.5 2 1 724UAD 55.2 131 3.25 153.9 148.5 176.2 187. 14 19 194.5 2 1 726UAD 95

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 7 seies Contact angle 3 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 7U 1 26 8.3.15 5. 2.33 51 238 2.12 216 48 2 65 7 71U 12 28 8.3.15 5.45 2.74 555 279 2.37 242 41 9 57 1 72U 15 32 9.3.15 6.15 3.45 625 35 2.86 292 36 6 49 8 73U 17 35 1.3.15 7.65 4.2 78 43 3.7 38 33 45 74U 2 42 12.6.3 1.3 6.1 1 5 62 5.45 56 27 3 37 2 75U 25 47 12.6.3 11.3 7.4 1 15 755 6.4 655 23 9 32 5 76U 3 55 13 1.6 14.5 1.2 1 48 1 4 8.9 91 2 27 2 77U 35 62 14 1.6 18.3 13.4 1 87 1 37 11. 1 12 17 7 24 1 78U 4 68 15 1.6 19.5 15.4 1 99 1 57 12.4 1 26 15 9 21 7 79U 45 75 16 1.6 23.1 18.7 2 36 1 91 15.4 1 57 14 3 19 5 71U 5 8 16 1.6 24.5 21.1 2 5 2 15 17.1 1 74 13 2 18 711U 55 9 18 1.1.6 32.5 27.7 3 3 2 83 22. 2 24 11 9 16 2 712U 6 95 18 1.1.6 33. 29.5 3 35 3 23.2 2 36 11 1 15 1 713U 65 1 18 1.1.6 35. 33. 3 55 3 35 25.5 2 6 1 4 14 2 714U 7 11 2 1.1.6 44. 41.5 4 5 4 2 33.5 3 45 9 5 13 715U 75 115 2 1.1.6 45. 43.5 4 6 4 45 35. 3 6 9 12 3 716U 8 125 22 1.1.6 55. 53. 5 6 5 4 42. 4 3 8 4 11 4 717U 85 13 22 1.1.6 56.5 56. 5 75 5 7 44. 4 5 8 1 9 718U 9 14 24 1.5 1 67.5 66.5 6 85 6 75 54. 5 5 7 5 1 2 719U 95 145 24 1.5 1 69. 7. 7 5 7 15 56.5 5 8 7 2 9 8 72U 1 15 24 1.5 1 7.5 74. 7 2 7 5 59.5 6 5 6 9 9 4 721U 15 16 26 2 1 82.5 85.5 8 4 8 75 68. 6 9 6 5 8 8 722U 11 17 28 2 1 95. 97.5 9 65 9 95 79.5 8 1 6 1 8 4 724U 12 18 28 2 1 96.5 13 9 85 1 5 83.5 8 5 5 7 7 8 726U 13 2 33 2 1 121 131 12 3 13 4 16 1 8 5 2 7 1 1 Minimum allowable value fo cone adius dimension o 1. 96

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.8 1.39.76 1.78.63 1.24 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.33 1.66 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 9.2.9.19 15.2 14. 2.4 22.8 12.5 23.5 24.8.3.15 7U 1. 1..21 17.9 16.7 23.1 25.5 14.5 25.5 26.8.3.15 71U 11.3 1.3.3 2.9 19.7 26.1 28.6 17.5 29.5 3.8.3.15 72U 12.6 1.8.37 23. 21.6 29. 31.9 19.5 32.5 33.8.3.15 73U 15.2 2.9.67 28.1 26.4 34.9 38.3 24.5 37.5 39.5.6.3 74U 16.5 3.3.79 32.6 3.9 39.4 42.8 29.5 42.5 44.5.6.3 75U 19. 4.8.11 39.2 37.3 46.9 5.6 35.5 49.5 5.5 1.6 76U 21.1 6.3.15 44.2 42.2 52.8 56.9 4.5 56.5 57.5 1.6 77U 23.2 7.4.19 49.7 47.7 58.3 62.4 45.5 62.5 63.5 1.6 78U 25.4 9.4.24 55.3 53. 64.7 69.3 5.5 69.5 7.5 1.6 79U 26.9 11.26 6.3 58. 69.7 74.3 55.5 74.5 75.5 1.6 71U 3.1 16.38 66.9 64.3 78.1 83.5 62 83 85.5 1.6 711U 31.5 17.41 71.9 69.3 83.1 88.5 67 88 9.5 1.6 712U 32.9 18.44 76.9 74.3 88.1 93.4 72 93 95.5 1.6 713U 36.1 24.61 83.6 8.5 96.4 12.6 77 13 15.5 1.6 714U 37.6 26.64 88.6 85.5 11.4 17.6 82 18 11.5 1.6 715U 4.8 34.86 95.2 91.7 19.8 116.8 87 118 12.5 1.6 716U 42.2 36.9 1.2 96.7 114.8 121.8 92 123 125.5 1.6 717U 45.4 47 1.17 16.9 13. 123.2 131. 98.5 131.5 134.5 1.5 1 718U 46.8 49 1.22 111.9 18. 128.2 136. 13.5 136.5 139.5 1.5 1 719U 48.3 51 1.27 116.9 113. 133.2 141. 18.5 141.5 144.5 1.5 1 72U 51.5 7 1.58 123.5 119.2 141.5 15.1 115 15 154.5 2 1 721U 54.6 83 1.98 13.2 125.4 149.9 159.3 12 16 164.5 2 1 722U 57.5 9 2.11 14.2 135.4 159.9 169.2 13 17 174.5 2 1 724U 64.4 131 3.25 153.9 148.5 176.2 186.9 14 19 194.5 2 1 726U 97

Main Spindle Beaings Standad angula contact ball beaings (steel ball type) 72 seies Contact angle 15 d 1 13mm B 1 D D1 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 72C 1 3 9.6.3 5.4 2.64 555 269 1.1 13 13.4 42 9 55 6 721C 12 32 1.6.3 7.1 3.45 72 355 1.59 162 12.9 4 51 8 722C 15 35 11.6.3 9. 4.5 915 46 1.89 193 12.9 35 2 45 6 723C 17 4 12.6.3 11.2 5.75 1 14 59 2.67 272 13. 3 5 39 6 724C 2 47 14 1.6 14.6 8.15 1 49 835 3.7 375 13.4 25 5 33 725C 25 52 15 1.6 16.6 1.2 1 69 1 5 3.75 385 14. 22 6 29 2 726C 3 62 16 1.6 23. 14.7 2 35 1 5 7.1 725 14. 18 9 24 5 727C 35 72 17 1.1.6 3.5 19.9 3 1 2 3 1.6 1 9 13.9 16 4 21 3 728C 4 8 18 1.1.6 36.5 25.2 3 7 2 57 14.4 1 47 14.2 14 7 19 729C 45 85 19 1.1.6 41. 28.8 4 15 2 94 14.8 1 51 14.2 13 5 17 5 721C 5 9 2 1.1.6 43. 31.5 4 35 3 25 15.3 1 56 14.5 12 6 16 3 7211C 55 1 21 1.5 1 53. 4. 5 4 4 1 21.6 2 2 14.5 11 4 14 7 7212C 6 11 22 1.5 1 64. 49.5 6 55 5 5 26.1 2 66 14.5 1 2 13 2 7213C 65 12 23 1.5 1 7. 55. 7 1 5 6 28.5 2 91 14.6 9 5 12 3 7214C 7 125 24 1.5 1 76. 6. 7 75 6 15 31. 3 15 14.6 9 11 7 7215C 75 13 25 1.5 1 79.5 65.5 8 1 6 7 33.5 3 4 14.8 8 5 11 7216C 8 14 26 2 1 93. 77.5 9 45 7 9 34.5 3 55 14.7 8 1 4 7217C 85 15 28 2 1 14 9.5 1 6 9 2 46.5 4 75 14.9 7 5 9 7 7218C 9 16 3 2 1 123 15 12 5 1 7 53.5 5 45 14.6 7 9 1 7219C 95 17 32 2.1 1.1 139 12 14 2 12 2 62. 6 35 14.6 6 6 8 6 722C 1 18 34 2.1 1.1 149 127 15 2 12 9 67. 6 8 14.5 6 3 8 1 7221CT1B 15 19 36 2.1 1.1 162 143 16 6 14 6 74.5 7 6 14.5 6 7 7 7222CT1B 11 2 38 2.1 1.1 176 16 17 9 16 3 86. 8 8 14.5 5 7 7 4 7224CT1B 12 215 4 2.1 1.1 199 192 2 2 19 6 91.5 9 3 14.6 5 3 6 8 7226CT1B 13 23 4 3 1.1 213 214 21 7 21 8 111 11 3 14.7 4 9 6 3 1 Minimum allowable value fo cone adius dimension o 1. 98

Main Spindle Beaings 1as as da Db as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 D1 D2 min max max max max 7.3.9.29 17.4 23.5 25.5 14.5 25.5 27.5.6.3 72C 8. 1.3.36 18.4 25.6 27.8 16.5 27.5 29.5.6.3 721C 8.9 1.5.45 2.8 29. 31.6 19.5 3.5 32.5.6.3 722C 9.9 2.1.62 24.2 33.2 36.2 21.5 35.5 37.5.6.3 723C 11.6 3.1.1 29.4 39.4 42.8 25.5 41.5 42.5 1.6 724C 12.7 4.1.12 33.8 44.2 47.3 3.5 46.5 47.5 1.6 725C 14.3 6.6.19 4.6 52.2 56.4 35.5 56.5 57.5 1.6 726C 15.7 8.8.27 46.8 6.2 65. 42 65 67.5 1.6 727C 17.1 11.35 53. 67. 72.3 47 73 75.5 1.6 728C 18.2 14.4 57.3 72.5 78.1 52 78 8.5 1.6 729C 19.4 17.45 62.2 77.6 83.2 57 83 85.5 1.6 721C 2.9 21.59 69. 86. 92.3 63.5 91.5 94.5 1.5 1 7211C 22.6 28.76 77. 96. 12.9 68.5 11.5 14.5 1.5 1 7212C 23.9 34.95 82.5 12.5 19.7 73.5 111.5 114.5 1.5 1 7213C 25.1 4 1.4 87. 18. 115.5 78.5 116.5 119.5 1.5 1 7214C 26.4 43 1.14 93. 114. 121.5 83.5 121.5 124.5 1.5 1 7215C 27.8 54 1.39 98.1 121.4 129.6 9 13 134.5 2 1 7216C 29.9 63 1.73 16.1 129.9 138.5 95 14 144.5 2 1 7217C 31.8 8 2.13 111.6 138.5 147.9 1 15 154.5 2 1 7218C 33.8 96 2.58 118.2 146.8 157. 17 158 163 2 1 7219C 35.8 119 3.21 124.8 155.2 166.2 112 168 173 2 1 722C 37.8 147 3.81 131.3 163.7 175.3 117 178 183 2 1 7221CT1B 39.9 171 4.49 138. 172. 184.4 122 188 193 2 1 7222CT1B 42.5 26 5.44 149. 186. 198.6 132 23 28 2 1 7224CT1B 44.2 232 6.19 161. 199. 212.6 144 216 223 2.5 1 7226CT1B 99

Main Spindle Beaings Standad angula contact ball beaings (ceamic ball type) 5S-79 seies Contact angle 15 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-79UC 1 22 6.3.15 3.2 1.15 325 117 1.94 198 9.8 84 136 8 5S-791UC 12 24 6.3.15 3.35 1.29 34 131 2.18 223 1.2 74 6 121 6 5S-792UC 15 28 7.3.15 5.1 2.1 52 25 3.4 345 1. 62 5 11 9 5S-793UC 17 3 7.3.15 5.35 2.22 545 226 3.75 385 1.3 57 2 93 2 5S-794UC 2 37 9.3.15 7.65 3.4 78 345 5.75 585 1.3 47 1 76 8 5S-795UC 25 42 9.3.15 8.15 4. 835 45 6.8 695 1.7 4 1 65 4 5S-796UC 3 47 9.3.15 8.6 4.6 88 47 7.85 8 11. 34 9 56 9 5S-797UC 35 55 1.6.3 13.7 7.1 1 4 725 12.1 1 24 1.7 29 9 48 7 5S-798UC 4 62 12.6.3 14.5 8.15 1 48 83 13.9 1 42 11. 26 3 42 9 5S-799UC 45 68 12.6.3 17.9 1.3 1 83 1 5 17.6 1 79 11. 23 8 38 8 5S-791UC 5 72 12.6.3 18.9 11.5 1 93 1 18 19.7 2 1 11.1 22 35 9 5S-7911UC 55 8 13 1.6 19.7 12.8 2 1 1 31 22. 2 24 11.3 19 9 32 4 5S-7912UC 6 85 13 1.6 2.5 14.1 2 9 1 44 24.2 2 46 11.4 18 5 3 2 5S-7913UC 65 9 13 1.6 2.8 14.8 2 12 1 51 25.4 2 59 11.4 17 3 28 3 5S-7914UC 7 1 16 1.6 29.7 2.9 3 5 2 14 36. 3 65 11.4 15 8 25 8 5S-7915UC 75 15 16 1.6 3. 22. 3 5 2 24 37.5 3 85 11.5 14 9 24 3 5S-7916UC 8 11 16 1.6 3.5 23. 3 1 2 34 39.5 4 11.4 14 1 22 9 5S-7917UC 85 12 18 1.1.6 41. 3.5 4 2 3 1 52. 5 35 11.4 13 1 21 4 5S-7918UC 9 125 18 1.1.6 41.5 32. 4 25 3 25 54.5 5 55 11.5 12 5 2 4 5S-7919UC 95 13 18 1.1.6 42.5 33.5 4 3 3 4 57. 5 8 11.4 11 9 19 5 5S-792UC 1 14 2 1.1.6 54.5 42.5 5 55 4 3 72.5 7 4 11.4 11 2 18 2 5S-7921UC 15 145 2 1.1.6 55. 44. 5 6 4 5 75.5 7 7 11.5 1 8 17 5 5S-7922UC 11 15 2 1.1.6 56. 46. 5 7 4 7 78.5 8 5 11.4 1 3 16 8 5S-7924UC 12 165 22 1.1.6 69. 56.5 7 5 5 8 97. 9 9 11.5 9 4 15 4 5S-7926UC 13 18 24 1.5 1 85. 7.5 8 65 7 2 121 12 3 11.5 8 7 14 1 1 Minimum allowable value fo cone adius dimension o 1. 1

Main Spindle Beaings 1as as da Db as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 5.2.4.9 14.3 13.5 17.7 19.4 12.5 19.5 2.8.3.15 5S-79UC 5.4.4.1 16.3 15.5 19.7 21.4 14.5 21.5 22.8.3.15 5S-791UC 6.4.8.13 19.3 18.3 23.7 25.8 17.5 25.5 26.8.3.15 5S-792UC 6.7.8.15 21.3 2.3 25.7 27.8 19.5 27.5 28.8.3.15 5S-793UC 8.3 1.5.33 25.9 24.7 31.1 33.6 22.5 34.5 35.8.3.15 5S-794UC 9. 1.8.39 3.9 29.7 36.1 38.6 27.5 39.5 4.8.3.15 5S-795UC 9.7 2..44 35.9 34.7 41.1 43.6 32.5 44.5 45.8.3.15 5S-796UC 11.1 3.4.62 41.6 39.9 48.4 51.7 39.5 5.5 52.5.6.3 5S-797UC 12.9 4.7.1 47.6 45.9 54.4 57.8 44.5 57.5 59.5.6.3 5S-798UC 13.6 5.9.11 52.7 5.8 6.4 64. 49.5 63.5 65.5.6.3 5S-799UC 14.2 6.2.11 57.2 55.3 64.9 68.5 54.5 67.5 69.5.6.3 5S-791UC 15.6 7.5.16 63.7 61.8 71.4 75.1 6.5 74.5 75.5 1.6 5S-7911UC 16.3 8..17 68.7 66.8 76.4 8.1 65.5 79.5 8.5 1.6 5S-7912UC 16.9 8.6.19 73.7 71.8 81.4 85.1 7.5 84.5 85.5 1.6 5S-7913UC 19.4 14.3 8.3 78. 89.7 94.3 75.5 94.5 95.5 1.6 5S-7914UC 2.1 15.32 85.3 83. 94.7 99.3 8.5 99.5 1.5 1.6 5S-7915UC 2.8 16.33 9.8 88.5 1.2 14.8 85.5 14.5 15.5 1.6 5S-7916UC 22.8 22.47 96.9 94.3 18.1 113.5 92 113 115.5 1.6 5S-7917UC 23.5 23.49 11.9 99.3 113.1 118.5 97 118 12.5 1.6 5S-7918UC 24.1 24.52 16.9 14.3 118.1 123.5 12 123 125.5 1.6 5S-7919UC 26.1 33.7 113.6 11.5 126.4 132.7 17 133 135.5 1.6 5S-792UC 26.8 34.73 118.6 115.5 131.4 137.7 112 138 14.5 1.6 5S-7921UC 27.5 36.76 123.6 12.5 136.4 142.7 117 143 145.5 1.6 5S-7922UC 3.2 48 1.3 135.2 131.7 149.8 156.8 127 158 16.5 1.6 5S-7924UC 32.9 63 1.34 146.9 143. 163.2 171. 138.5 171.5 174.5 1.5 1 5S-7926UC 11

Main Spindle Beaings Standad angula contact ball beaings (ceamic ball type) 5S-79 seies Contact angle 25 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-79UAD 1 22 6.3.15 3.5 1.1 31 112 2.12 216 73 2 12 1 5S-791UAD 12 24 6.3.15 3.2 1.23 325 125 2.3 234 65 1 16 8 5S-792UAD 15 28 7.3.15 4.85 1.92 495 196 3.35 345 54 5 89 4 5S-793UAD 17 3 7.3.15 5.1 2.12 52 216 3.6 37 49 8 81 8 5S-794UAD 2 37 9.3.15 7.25 3.25 74 33 5.6 575 41 1 67 4 5S-795UAD 25 42 9.3.15 7.75 3.8 79 385 6.4 65 35 57 4 5S-796UAD 3 47 9.3.15 8.15 4.35 83 445 7.15 73 3 4 49 9 5S-797UAD 35 55 1.6.3 13. 6.75 1 32 69 12.1 1 24 26 42 7 5S-798UAD 4 62 12.6.3 13.7 7.75 1 4 79 13.6 1 38 23 37 7 5S-799UAD 45 68 12.6.3 17. 9.75 1 73 995 17.5 1 79 2 7 34 5S-791UAD 5 72 12.6.3 17.9 1.9 1 82 1 11 19.3 1 97 19 2 31 5 5S-7911UAD 55 8 13 1.6 18.6 12.2 1 9 1 24 21.1 2 16 17 4 28 5 5S-7912UAD 6 85 13 1.6 19.4 13.3 1 97 1 36 23. 2 34 16 2 26 5 5S-7913UAD 65 9 13 1.6 19.6 14. 2 1 43 23.9 2 43 15 1 24 8 5S-7914UAD 7 1 16 1.6 28. 19.8 2 86 2 2 33.5 3 4 13 8 22 6 5S-7915UAD 75 15 16 1.6 28.4 2.8 2 9 2 12 34.5 3 55 13 21 4 5S-7916UAD 8 11 16 1.6 28.7 21.7 2 93 2 22 36. 3 7 12 3 2 1 5S-7917UAD 85 12 18 1.1.6 38.5 28.9 3 95 2 95 47. 4 8 11 4 18 8 5S-7918UAD 9 125 18 1.1.6 39.5 3. 4 3 1 49. 5 1 9 17 9 5S-7919UAD 95 13 18 1.1.6 4. 31.5 4 5 3 2 51. 5 2 1 4 17 1 5S-792UAD 1 14 2 1.1.6 51. 4. 5 2 4 1 67.5 6 85 9 8 16 5S-7921UAD 15 145 2 1.1.6 52. 41.5 5 3 4 25 7. 7 1 9 4 15 4 5S-7922UAD 11 15 2 1.1.6 52.5 43.5 5 4 4 45 72.5 7 4 9 14 8 5S-7924UAD 12 165 22 1.1.6 65. 53.5 6 65 5 45 88. 8 95 8 2 13 5 5S-7926UAD 13 18 24 1.5 1 8. 66.5 8 15 6 8 112 11 4 7 6 12 4 1 Minimum allowable value fo cone adius dimension o 1. 12

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 6.8.4.9 14.3 13.5 17.7 19.4 12.5 19.5 2.8.3.15 5S-79UAD 7.2.4.1 16.3 15.5 19.7 21.4 14.5 21.5 22.8.3.15 5S-791UAD 8.6.8.13 19.3 18.3 23.7 25.7 17.5 25.5 26.8.3.15 5S-792UAD 9..8.15 21.3 2.3 25.7 27.7 19.5 27.5 28.8.3.15 5S-793UAD 11.2 1.5.33 25.9 24.7 31.1 33.6 22.5 34.5 35.8.3.15 5S-794UAD 12.4 1.8.39 3.9 29.7 36.1 38.6 27.5 39.5 4.8.3.15 5S-795UAD 13.5 2..44 35.9 34.7 41.1 43.6 32.5 44.5 45.8.3.15 5S-796UAD 15.6 3.4.62 41.6 39.9 48.4 51.7 39.5 5.5 52.5.6.3 5S-797UAD 18. 4.7.1 47.6 45.9 54.4 57.7 44.5 57.5 59.5.6.3 5S-798UAD 19.2 5.9.11 52.7 5.8 6.4 64. 49.5 63.5 65.5.6.3 5S-799UAD 2.3 6.2.11 57.2 55.3 64.9 68.5 54.5 67.5 69.5.6.3 5S-791UAD 22.3 7.5.16 63.7 61.8 71.4 75.1 6.5 74.5 75.5 1.6 5S-7911UAD 23.5 8..17 68.7 66.8 76.4 8. 65.5 79.5 8.5 1.6 5S-7912UAD 24.6 8.6.19 73.7 71.8 81.4 85. 7.5 84.5 85.5 1.6 5S-7913UAD 27.9 14.3 8.3 78 89.7 94.3 75.5 94.5 95.5 1.6 5S-7914UAD 29.1 15.32 85.3 83 94.7 99.3 8.5 99.5 1.5 1.6 5S-7915UAD 3.4 16.33 9.8 88.5 1.2 14.7 85.5 14.5 15.5 1.6 5S-7916UAD 33. 22.47 96.9 94.3 18.1 113.5 92 113 115.5 1.6 5S-7917UAD 34.2 23.49 11.9 99.3 113.1 118.5 97 118 12.5 1.6 5S-7918UAD 35.3 24.52 16.9 14.3 118.1 123.4 12 123 125.5 1.6 5S-7919UAD 38.1 33.7 113.6 11.5 126.4 132.6 17 133 135.5 1.6 5S-792UAD 39.3 34.73 118.6 115.5 131.4 137.6 112 138 14.5 1.6 5S-7921UAD 4.4 36.76 123.6 12.5 136.4 142.6 117 143 145.5 1.6 5S-7922UAD 44.4 48 1.3 135.2 131.7 149.8 156.7 127 158 16.5 1.6 5S-7924UAD 48.3 63 1.34 146.9 143 163.2 17.9 138.5 171.5 174.5 1.5 1 5S-7926UAD 13

Main Spindle Beaings Standad angula contact ball beaings (ceamic ball type) 5S-79 seies Contact angle 3 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-79U 1 22 6.3.15 2.95 1.6 3 18 1.63 166 58 6 78 5S-791U 12 24 6.3.15 3.1 1.19 315 121 1.77 181 52 1 69 4 5S-792U 15 28 7.3.15 4.7 1.86 48 19 2.56 261 43 6 58 1 5S-793U 17 3 7.3.15 4.9 2.5 5 29 2.74 28 39 9 53 1 5S-794U 2 37 9.3.15 7. 3.1 715 32 4.3 44 32 9 43 8 5S-795U 25 42 9.3.15 7.45 3.65 76 375 4.9 5 28 37 3 5S-796U 3 47 9.3.15 7.8 4.2 8 43 5.5 56 24 3 32 4 5S-797U 35 55 1.6.3 12.5 6.5 1 27 665 9.35 955 2 8 27 8 5S-798U 4 62 12.6.3 13.1 7.45 1 34 76 1.5 1 7 18 4 24 5 5S-799U 45 68 12.6.3 16.3 9.4 1 66 96 13.6 1 39 16 6 22 1 5S-791U 5 72 12.6.3 17.2 1.5 1 75 1 7 15. 1 53 15 4 2 5 5S-7911U 55 8 13 1.6 17.8 11.7 1 82 1 19 16.5 1 68 13 9 18 5 5S-7912U 6 85 13 1.6 18.6 12.8 1 89 1 31 18. 1 83 12 9 17 2 5S-7913U 65 9 13 1.6 18.8 13.5 1 91 1 37 18.7 1 91 12 1 16 1 5S-7914U 7 1 16 1.6 26.9 19.1 2 74 1 94 25.7 2 62 11 14 7 5S-7915U 75 15 16 1.6 27.2 2. 2 78 2 4 26.7 2 73 1 4 13 9 5S-7916U 8 11 16 1.6 27.5 2.9 2 81 2 13 27.8 2 83 9 8 13 1 5S-7917U 85 12 18 1.1.6 37. 27.8 3 8 2 83 36. 3 7 9 1 12 2 5S-7918U 9 125 18 1.1.6 37.5 29. 3 85 2 96 37.5 3 85 8 7 11 6 5S-7919U 95 13 18 1.1.6 38. 3.5 3 9 3 1 39. 4 8 3 11 1 5S-792U 1 14 2 1.1.6 49. 38.5 5 3 9 52. 5 3 7 8 1 4 5S-7921U 15 145 2 1.1.6 5. 4. 5 1 4 1 54. 5 5 7 5 1 5S-7922U 11 15 2 1.1.6 5.5 41.5 5 15 4 25 56. 5 7 7 2 9 6 5S-7924U 12 165 22 1.1.6 62.5 51.5 6 35 5 25 67.5 6 9 6 6 8 8 5S-7926U 13 18 24 1.5 1 76.5 64. 7 8 6 55 86.5 8 85 6 8 1 1 Minimum allowable value fo cone adius dimension o 1. 14

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.8 1.39.76 1.78.63 1.24 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.33 1.66 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 7.7.4.9 14.3 13.5 17.7 19.3 12.5 19.5 2.8.3.15 5S-79U 8.2.4.1 16.3 15.5 19.7 21.3 14.5 21.5 22.8.3.15 5S-791U 9.8.8.13 19.3 18.3 23.7 25.7 17.5 25.5 26.8.3.15 5S-792U 1.3.8.15 21.3 2.3 25.7 27.7 19.5 27.5 28.8.3.15 5S-793U 12.8 1.5.33 25.9 24.7 31.1 33.5 22.5 34.5 35.8.3.15 5S-794U 14.2 1.8.39 3.9 29.7 36.1 38.5 27.5 39.5 4.8.3.15 5S-795U 15.7 2..44 35.9 34.7 41.1 43.5 32.5 44.5 45.8.3.15 5S-796U 18.1 3.4.62 41.6 39.9 48.4 51.6 39.5 5.5 52.5.6.3 5S-797U 2.8 4.7.1 47.6 45.9 54.4 57.7 44.5 57.5 59.5.6.3 5S-798U 22.4 5.9.11 52.7 5.8 6.4 64. 49.5 63.5 65.5.6.3 5S-799U 23.7 6.2.11 57.2 55.3 64.9 68.4 54.5 67.5 69.5.6.3 5S-791U 26.1 7.5.16 63.7 61.8 71.4 75. 6.5 74.5 75.5 1.6 5S-7911U 27.5 8..17 68.7 66.8 76.4 8. 65.5 79.5 8.5 1.6 5S-7912U 29. 8.6.19 73.7 71.8 81.4 85. 7.5 84.5 85.5 1.6 5S-7913U 32.6 14.3 8.3 78. 89.7 94.2 75.5 94.5 95.5 1.6 5S-7914U 34.1 15.32 85.3 83. 94.7 99.2 8.5 99.5 1.5 1.6 5S-7915U 35.7 16.3 9.8 88.5 1.2 14.7 85.5 14.5 15.5 1.6 5S-7916U 38.7 22.47 96.9 94.3 18.1 113.4 92 113 115.5 1.6 5S-7917U 4.2 23.49 11.9 99.3 113.1 118.4 97 118 12.5 1.6 5S-7918U 41.6 24.52 16.9 14.3 118.1 123.4 12 123 125.5 1.6 5S-7919U 44.8 33.7 113.6 11.5 126.4 132.6 17 133 135.5 1.6 5S-792U 46.2 34.73 118.6 115.5 131.4 137.6 112 138 14.5 1.6 5S-7921U 47.7 36.76 123.6 12.5 136.4 142.6 117 143 145.5 1.6 5S-7922U 52.3 48 1.3 135.2 131.7 149.8 156.7 127 158 16.5 1.6 5S-7924U 56.9 63 1.34 146.9 143. 163.2 17.9 138.5 171.5 174.5 1.5 1 5S-7926U 15

Main Spindle Beaings Standad angula contact ball beaings (ceamic ball type) 5S-7 seies Contact angle 15 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-7UC 1 26 8.3.15 5.3 1.72 54 175 2.88 293 8.7 75 5 123 5S-71UC 12 28 8.3.15 5.8 2.3 595 27 3.4 35 9.3 65 5 16 8 5S-72UC 15 32 9.3.15 6.6 2.56 675 261 4.35 44 9.7 57 2 93 2 5S-73UC 17 35 1.3.15 8.25 3.15 84 32 5.3 54 9.6 51 7 84 2 5S-74UC 2 42 12.6.3 11.1 4.55 1 13 465 7.7 785 9.8 42 7 69 5 5S-75UC 25 47 12.6.3 12.3 5.55 1 25 565 9.4 96 1.2 37 3 6 8 5S-76UC 3 55 13 1.6 15.8 7.65 1 62 78 13. 1 32 1.3 31 2 5 9 5S-77UC 35 62 14 1.6 2. 1.1 2 4 1 3 17.2 1 75 1.4 27 7 45 1 5S-78UC 4 68 15 1.6 21.4 11.7 2 18 1 19 19.9 2 2 1.6 24 9 4 5 5S-79UC 45 75 16 1.6 25.3 14.1 2 58 1 44 24.1 2 46 1.7 22 4 36 5 5S-71UC 5 8 16 1.6 26.9 16. 2 74 1 63 27.3 2 78 1.9 2 7 33 7 5S-711UC 55 9 18 1.1.6 35.5 2.9 3 6 2 14 35.5 3 65 1.7 18 5 3 2 5S-712UC 6 95 18 1.1.6 36.5 22.4 3 7 2 28 38. 3 9 1.9 17 3 28 3 5S-713UC 65 1 18 1.1.6 38.5 24.9 3 9 2 54 42.5 4 35 11. 16 3 26 5 5S-714UC 7 11 2 1.1.6 48.5 31.5 4 95 3 2 53.5 5 45 1.9 14 9 24 3 5S-715UC 75 115 2 1.1.6 49.5 33. 5 5 3 4 56.5 5 75 11. 14 1 23 5S-716UC 8 125 22 1.1.6 6.5 4. 6 2 4 1 68.5 7 1.9 13 1 21 4 5S-717UC 85 13 22 1.1.6 62. 42.5 6 35 4 35 72.5 7 4 11. 12 5 2 4 5S-718UC 9 14 24 1.5 1 74. 5.5 7 55 5 15 86. 8 75 1.9 11 7 19 5S-719UC 95 145 24 1.5 1 76. 53. 7 75 5 4 9.5 9 25 11. 11 2 18 2 5S-72UC 1 15 24 1.5 1 77.5 56. 7 9 5 7 95.5 9 75 11.1 1 8 17 5 5S-721UC 15 16 26 2 1 91. 65. 9 25 6 6 111 11 3 11. 1 1 16 5 5S-722UC 11 17 28 2 1 14 74. 1 6 7 5 126 12 8 1.9 9 6 15 6 5S-724UC 12 18 28 2 1 16 78.5 1 8 8 134 13 6 11.1 9 14 6 5S-726UC 13 2 33 2 1 133 99.5 13 6 1 2 17 17 3 11. 8 1 13 3 1 Minimum allowable value fo cone adius dimension o 1. 16

Main Spindle Beaings 1as as da Db as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 6.4.9.17 15.2 14. 2.4 22.9 12.5 23.5 24.8.3.15 5S-7UC 6.8 1..18 17.9 16.7 23.1 25.6 14.5 25.5 26.8.3.15 5S-71UC 7.7 1.3.27 2.9 19.7 26.1 28.7 17.5 29.5 3.8.3.15 5S-72UC 8.5 1.8.33 23. 21.6 29. 32. 19.5 32.5 33.8.3.15 5S-73UC 1.3 2.9.6 28.1 26.4 34.9 38.4 24.5 37.5 39.5.6.3 5S-74UC 1.9 3.3.71 32.6 3.9 39.4 42.9 29.5 42.5 44.5.6.3 5S-75UC 12.3 4.8.1 39.2 37.3 46.9 5.7 35.5 49.5 5.5 1.6 5S-76UC 13.5 6.3.13 44.2 42.2 52.8 57. 4.5 56.5 57.5 1.6 5S-77UC 14.8 7.4.17 49.7 47.7 58.3 62.5 45.5 62.5 63.5 1.6 5S-78UC 16.1 9.4.21 55.3 53. 64.7 69.4 5.5 69.5 7.5 1.6 5S-79UC 16.8 11.23 6.3 58. 69.7 74.4 55.5 74.5 75.5 1.6 5S-71UC 18.8 16.33 66.9 64.3 78.1 83.6 62 83 85.5 1.6 5S-711UC 19.4 17.36 71.9 69.3 83.1 88.6 67 88 9.5 1.6 5S-712UC 2.1 18.38 76.9 74.3 88.1 93.5 72 93 95.5 1.6 5S-713UC 22.1 24.53 83.6 8.5 96.4 12.7 77 13 15.5 1.6 5S-714UC 22.8 26.56 88.6 85.5 11.4 17.7 82 18 11.5 1.6 5S-715UC 24.8 34.74 95.2 91.7 19.8 116.9 87 118 12.5 1.6 5S-716UC 25.5 36.78 1.2 96.7 114.8 121.9 92 123 125.5 1.6 5S-717UC 27.5 47 1. 16.9 13. 123.2 131.1 98.5 131.5 134.5 1.5 1 5S-718UC 28.2 49 1.4 111.9 18. 128.2 136.1 13.5 136.5 139.5 1.5 1 5S-719UC 28.8 51 1.9 116.9 113. 133.2 141.1 18.5 141.5 144.5 1.5 1 5S-72UC 3.8 7 1.34 123.5 119.2 141.5 15.2 115 15 154.5 2 1 5S-721UC 32.9 83 1.69 13.2 125.4 149.9 159.4 12 16 164.5 2 1 5S-722UC 34.2 9 1.8 14.2 135.4 159.9 169.4 13 17 174.5 2 1 5S-724UC 38.7 131 2.8 153.9 148.5 176.2 187.1 14 19 194.5 2 1 5S-726UC 17

Main Spindle Beaings Standad angula contact ball beaings (ceamic ball type) 5S-7 seies Contact angle 25 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-7UAD 1 26 8.3.15 5.15 1.66 525 169 3.3 34 65 8 17 9 5S-71UAD 12 28 8.3.15 5.6 1.95 57 199 3.7 38 57 1 93 7 5S-72UAD 15 32 9.3.15 6.35 2.45 645 25 4.45 455 49 8 81 8 5S-73UAD 17 35 1.3.15 7.9 3. 85 35 5.8 59 45 73 9 5S-74UAD 2 42 12.6.3 1.6 4.35 1 8 445 8.45 865 37 2 61 5S-75UAD 25 47 12.6.3 11.7 5.3 1 19 54 9.9 1 1 32 5 53 4 5S-76UAD 3 55 13 1.6 15.1 7.3 1 54 745 13.8 1 4 27 2 44 7 5S-77UAD 35 62 14 1.6 19. 9.65 1 94 98 17.1 1 74 24 1 39 6 5S-78UAD 4 68 15 1.6 2.3 11.1 2 7 1 13 19.3 1 97 21 7 35 6 5S-79UAD 45 75 16 1.6 24. 13.4 2 45 1 37 23.8 2 43 19 5 32 5S-71UAD 5 8 16 1.6 25.5 15.2 2 6 1 55 26.5 2 71 18 29 6 5S-711UAD 55 9 18 1.1.6 33.5 19.9 3 4 2 3 34.5 3 5 16 2 26 5 5S-712UAD 6 95 18 1.1.6 34.5 21.2 3 5 2 17 36. 3 7 15 1 24 8 5S-713UAD 65 1 18 1.1.6 36. 23.6 3 7 2 41 4. 4 5 14 2 23 3 5S-714UAD 7 11 2 1.1.6 46. 29.7 4 7 3 5 52. 5 3 13 21 4 5S-715UAD 75 115 2 1.1.6 47. 31.5 4 8 3 2 54.5 5 55 12 3 2 2 5S-716UAD 8 125 22 1.1.6 57.5 38. 5 85 3 9 65.5 6 7 11 4 18 8 5S-717UAD 85 13 22 1.1.6 58.5 4.5 6 4 1 68.5 7 1 9 17 9 5S-718UAD 9 14 24 1.5 1 7. 48. 7 15 4 85 84. 8 55 1 2 16 7 5S-719UAD 95 145 24 1.5 1 71.5 5.5 7 3 5 15 88. 8 95 9 8 16 5S-72UAD 1 15 24 1.5 1 73.5 53. 7 5 5 4 92. 9 35 9 4 15 4 5S-721UAD 15 16 26 2 1 86. 61.5 8 75 6 3 16 1 8 8 8 14 5 5S-722UAD 11 17 28 2 1 98.5 7. 1 1 7 15 123 12 5 8 4 13 7 5S-724UAD 12 18 28 2 1 11 74.5 1 3 7 6 129 13 2 7 8 12 8 5S-726UAD 13 2 33 2 1 126 94.5 12 9 9 65 164 16 7 7 1 11 6 1 Minimum allowable value fo cone adius dimension o 1. 18

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 8.2.9.17 15.2 14. 2.4 22.9 12.5 23.5 24.8.3.15 5S-7UAD 8.8 1..18 17.9 16.7 23.1 25.6 14.5 25.5 26.8.3.15 5S-71UAD 1. 1.3.27 2.9 19.7 26.1 28.6 17.5 29.5 3.8.3.15 5S-72UAD 11.1 1.8.33 23. 21.6 29. 32. 19.5 32.5 33.8.3.15 5S-73UAD 13.4 2.9.6 28.1 26.4 34.9 38.3 24.5 37.5 39.5.6.3 5S-74UAD 14.5 3.3.71 32.6 3.9 39.4 42.8 29.5 42.5 44.5.6.3 5S-75UAD 16.6 4.8.1 39.2 37.3 46.9 5.7 35.5 49.5 5.5 1.6 5S-76UAD 18.4 6.3.13 44.2 42.2 52.8 56.9 4.5 56.5 57.5 1.6 5S-77UAD 2.2 7.4.17 49.7 47.7 58.3 62.5 45.5 62.5 63.5 1.6 5S-78UAD 22.1 9.4.21 55.3 53. 64.7 69.3 5.5 69.5 7.5 1.6 5S-79UAD 23.2 11.23 6.3 58. 69.7 74.3 55.5 74.5 75.5 1.6 5S-71UAD 26. 16.33 66.9 64.3 78.1 83.5 62 83 85.5 1.6 5S-711UAD 27.2 17.36 71.9 69.3 83.1 88.5 67 88 9.5 1.6 5S-712UAD 28.3 18.38 76.9 74.3 88.1 93.5 72 93 95.5 1.6 5S-713UAD 31.1 24.53 83.6 8.5 96.4 12.7 77 13 15.5 1.6 5S-714UAD 32.3 26.56 88.6 85.5 11.4 17.7 82 18 11.5 1.6 5S-715UAD 35. 34.74 95.2 91.7 19.8 116.9 87 118 12.5 1.6 5S-716UAD 36.2 36.78 1.2 96.7 114.8 121.9 92 123 125.5 1.6 5S-717UAD 39. 47 1. 16.9 13. 123.2 131. 98.5 131.5 134.5 1.5 1 5S-718UAD 4.1 49 1.4 111.9 18. 128.2 136. 13.5 136.5 139.5 1.5 1 5S-719UAD 41.3 51 1.9 116.9 113. 133.2 141. 18.5 141.5 144.5 1.5 1 5S-72UAD 44.1 7 1.34 123.5 119.2 141.5 15.2 115 15 154.5 2 1 5S-721UAD 46.8 83 1.69 13.2 125.4 149.9 159.3 12 16 164.5 2 1 5S-722UAD 49.2 9 1.8 14.2 135.4 159.9 169.3 13 17 174.5 2 1 5S-724UAD 55.2 131 2.8 153.9 148.5 176.2 187. 14 19 194.5 2 1 5S-726UAD 19

Main Spindle Beaings Standad angula contact ball beaings (ceamic ball type) 5S-7 seies Contact angle 3 d 1 13mm B 1 D D1 d2 dd1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-7U 1 26 8.3.15 5. 1.62 51 165 2.54 259 52 6 7 1 5S-71U 12 28 8.3.15 5.45 1.9 555 193 2.84 289 45 7 6 9 5S-72U 15 32 9.3.15 6.15 2.38 625 242 3.4 35 39 9 53 1 5S-73U 17 35 1.3.15 7.65 2.92 78 298 4.45 455 36 48 5S-74U 2 42 12.6.3 1.3 4.25 1 5 43 6.55 67 29 7 39 6 5S-75U 25 47 12.6.3 11.3 5.1 1 15 52 7.65 78 26 34 7 5S-76U 3 55 13 1.6 14.5 7.5 1 48 715 1.7 1 9 21 8 29 5S-77U 35 62 14 1.6 18.3 9.3 1 87 95 13.2 1 34 19 3 25 7 5S-78U 4 68 15 1.6 19.5 1.7 1 99 1 9 14.8 1 51 17 4 23 1 5S-79U 45 75 16 1.6 23.1 13. 2 36 1 32 18.4 1 87 15 6 2 8 5S-71U 5 8 16 1.6 24.5 14.6 2 5 1 49 2.5 2 9 14 4 19 2 5S-711U 55 9 18 1.1.6 32.5 19.2 3 3 1 96 26.3 2 68 12 9 17 2 5S-712U 6 95 18 1.1.6 33. 2.5 3 35 2 9 27.7 2 83 12 1 16 1 5S-713U 65 1 18 1.1.6 35. 22.8 3 55 2 32 3.5 3 1 11 4 15 1 5S-714U 7 11 2 1.1.6 44. 28.6 4 5 2 92 4. 4 1 1 4 13 9 5S-715U 75 115 2 1.1.6 45. 3.5 4 6 3 1 42. 4 3 9 9 13 1 5S-716U 8 125 22 1.1.6 55. 37. 5 6 3 75 5.5 5 15 9 1 12 2 5S-717U 85 13 22 1.1.6 56.5 39. 5 75 3 95 53. 5 4 8 7 11 6 5S-718U 9 14 24 1.5 1 67.5 46. 6 85 4 7 64.5 6 6 8 2 1 9 5S-719U 95 145 24 1.5 1 69. 48.5 7 5 4 95 68. 6 9 7 8 1 4 5S-72U 1 15 24 1.5 1 7.5 51. 7 2 5 2 71. 7 25 7 5 1 5S-721U 15 16 26 2 1 82.5 59.5 8 4 6 5 81. 8 3 7 1 9 4 5S-722U 11 17 28 2 1 95. 67.5 9 65 6 9 95. 9 7 6 7 8 9 5S-724U 12 18 28 2 1 96.5 71.5 9 85 7 3 99.5 1 2 6 2 8 3 5S-726U 13 2 33 2 1 121 91. 12 3 9 3 126 12 9 5 7 7 6 1 Minimum allowable value fo cone adius dimension o 1. 11

Main Spindle Beaings 1as as as da Db as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.8 1.39.76 1.78.63 1.24 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.33 1.66 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min max max max max 9.2.9.17 15.2 14. 2.4 22.8 12.5 23.5 24.8.3.15 5S-7U 1. 1..18 17.9 16.7 23.1 25.5 14.5 25.5 26.8.3.15 5S-71U 11.3 1.3.27 2.9 19.7 26.1 28.6 17.5 29.5 3.8.3.15 5S-72U 12.6 1.8.33 23. 21.6 29. 31.9 19.5 32.5 33.8.3.15 5S-73U 15.2 2.9.6 28.1 26.4 34.9 38.3 24.5 37.5 39.5.6.3 5S-74U 16.5 3.3.71 32.6 3.9 39.4 42.8 29.5 42.5 44.5.6.3 5S-75U 19. 4.8.1 39.2 37.3 46.9 5.6 35.5 49.5 5.5 1.6 5S-76U 21.1 6.3.13 44.2 42.2 52.8 56.9 4.5 56.5 57.5 1.6 5S-77U 23.2 7.4.17 49.7 47.7 58.3 62.4 45.5 62.5 63.5 1.6 5S-78U 25.4 9.4.21 55.3 53. 64.7 69.3 5.5 69.5 7.5 1.6 5S-79U 26.9 11.23 6.3 58. 69.7 74.3 55.5 74.5 75.5 1.6 5S-71U 3.1 16.33 66.9 64.3 78.1 83.5 62 83 85.5 1.6 5S-711U 31.5 17.36 71.9 69.3 83.1 88.5 67 88 9.5 1.6 5S-712U 32.9 18.38 76.9 74.3 88.1 93.4 72 93 95.5 1.6 5S-713U 36.1 24.53 83.6 8.5 96.4 12.6 77 13 15.5 1.6 5S-714U 37.6 26.56 88.6 85.5 11.4 17.6 82 18 11.5 1.6 5S-715U 4.8 34.74 95.2 91.7 19.8 116.8 87 118 12.5 1.6 5S-716U 42.2 36.78 1.2 96.7 114.8 121.8 92 123 125.5 1.6 5S-717U 45.4 47 1. 16.9 13. 123.2 131. 98.5 131.5 134.5 1.5 1 5S-718U 46.8 49 1.4 111.9 18. 128.2 136. 13.5 136.5 139.5 1.5 1 5S-719U 48.3 51 1.9 116.9 113. 133.2 141. 18.5 141.5 144.5 1.5 1 5S-72U 51.5 7 1.34 123.5 119.2 141.5 15.1 115 15 154.5 2 1 5S-721U 54.6 83 1.69 13.2 125.4 149.9 159.3 12 16 164.5 2 1 5S-722U 57.5 9 1.8 14.2 135.4 159.9 169.2 13 17 174.5 2 1 5S-724U 64.4 131 2.8 153.9 148.5 176.2 186.9 14 19 194.5 2 1 5S-726U 111

Main Spindle Beaings High-speed angula contact ball beaings (steel ball type) 2LA-HSE9U seies Contact angle 15 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 2LA-HSE91UC 5 72 12.6.3 11. 8.1 1 12 83 11.8 1 21 1.9 21 8 34 6 2LA-HSE911UC 55 8 13 1.6 13.7 1.1 1 39 1 3 14.8 1 51 1.8 19 7 31 3 2LA-HSE912UC 6 85 13 1.6 14.2 11.1 1 45 1 13 16.2 1 66 1.9 18 3 29 1 2LA-HSE913UC 65 9 13 1.6 14.3 11.6 1 46 1 18 17. 1 74 11. 17 2 27 2 2LA-HSE914UC 7 1 16 1.6 2.9 16.5 2 14 1 68 24.2 2 47 1.9 15 6 24 8 2LA-HSE915UC 75 15 16 1.6 21.8 18. 2 22 1 83 26.3 2 69 1.9 14 8 23 4 2LA-HSE916UC 8 11 16 1.6 22. 18.8 2 24 1 91 27.5 2 81 11. 14 22 2 2LA-HSE917UC 85 12 18 1.1.6 29.8 24.8 3 5 2 52 36. 3 7 1.9 13 2 6 2LA-HSE918UC 9 125 18 1.1.6 31. 26.8 3 15 2 74 39. 4 1.9 12 4 19 6 2LA-HSE919UC 95 13 18 1.1.6 31.5 27.9 3 2 2 85 4.5 4 15 11. 11 8 18 8 2LA-HSE92UC 1 14 2 1.1.6 36.5 32.5 3 7 3 35 48. 4 9 11. 11 1 17 6 2LA-HSE921UC 15 145 2 1.1.6 37. 34. 3 75 3 45 5. 5 1 11. 1 6 16 9 2LA-HSE922UC 11 15 2 1.1.6 37.5 35.5 3 8 3 6 51. 5 25 11.1 1 2 16 2 2LA-HSE924UC 12 165 22 1.1.6 48. 45. 4 85 4 6 66. 6 75 11. 9 3 14 8 2LA-HSE926UC 13 18 24 1.5 1 59. 56. 6 5 5 7 81.5 8 35 11. 8 6 13 6 2LA-HSE928UC 14 19 24 1.5 1 59.5 58. 6 5 5 95 85. 8 7 11. 8 1 12 8 2LA-HSE93UC 15 21 28 2 1 79.5 77. 8 1 7 85 112 11 5 1.9 7 4 11 7 2LA-HSE932UC 16 22 28 2 1 8. 8.5 8 2 8 2 117 12 11. 7 11 1 2LA-HSE934UC 17 23 28 2 1 81. 83.5 8 25 8 5 122 12 5 11.1 6 7 1 6 1 Minimum allowable value fo cone adius dimension o 1. 112

Main Spindle Beaings 1as as dadb as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 14.2 6..13 57.6 56.6 64.4 66.8 54.5 52.5 67.5 69.5.6.3 15.6 7.7.18 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 16.3 8.3.2 68.6 67.4 76.4 79.1 65.5 64.5 79.5 8.5 1.6 17. 8.9.21 73.6 72.4 81.4 84.1 7.5 69.5 84.5 85.5 1.6 19.5 14.34 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 2.1 15.36 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 2.8 16.38 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 22.8 22.54 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 23.5 23.56 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 24.2 24.59 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 26.2 32.82 113.8 111.7 126.2 13.7 17 14.5 133 135.5 1.6 26.9 33.85 118.8 116.7 131.2 135.7 112 19.5 138 14.5 1.6 27.5 35.88 123.8 121.7 136.2 14.7 117 114.5 143 145.5 1.6 3.2 47 1.2 135.4 133. 149.6 154.8 127 124.5 158 16.5 1.6 32.9 62 1.56 146.9 144.2 163.1 168.9 138.5 135.5 171.5 174.5 1.5 1 34.3 66 1.66 156.9 154.2 173.1 178.9 148.5 145.5 181.5 184.5 1.5 1 38.3 99 2.58 17.5 167.3 189.5 196.4 16 155.5 2 24.5 2 1 39.6 15 2.71 18.5 177.3 199.5 26.3 17 165.5 21 214.5 2 1 41. 111 2.84 19.5 187.3 29.5 216.3 18 175.5 22 224.5 2 1 113

Main Spindle Beaings High-speed angula contact ball beaings (steel ball type) 2LA-HSE9U seies Contact angle 2 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 2LA-HSE91U 5 72 12.6.3 1.7 7.95 1 9 81 13.2 1 35 23 1 37 2 2LA-HSE911U 55 8 13 1.6 13.3 9.9 1 36 1 1 16.5 1 69 2 8 33 6 2LA-HSE912U 6 85 13 1.6 13.8 1.8 1 41 1 1 18.1 1 85 19 4 31 3 2LA-HSE913U 65 9 13 1.6 13.9 11.3 1 42 1 15 18.9 1 93 18 2 29 3 2LA-HSE914U 7 1 16 1.6 2.4 16.1 2 8 1 64 26.9 2 75 16 6 26 7 2LA-HSE915U 75 15 16 1.6 21.2 17.5 2 16 1 79 29.4 3 15 6 25 2 2LA-HSE916U 8 11 16 1.6 21.4 18.3 2 19 1 87 3. 3 1 14 8 23 9 2LA-HSE917U 85 12 18 1.1.6 29.1 24.2 2 96 2 47 4. 4 1 13 7 22 1 2LA-HSE918U 9 125 18 1.1.6 3. 26.2 3 1 2 67 43.5 4 45 13 1 21 1 2LA-HSE919U 95 13 18 1.1.6 3.5 27.3 3 1 2 78 45.5 4 65 12 5 2 2 2LA-HSE92U 1 14 2 1.1.6 35.5 32. 3 6 3 25 53. 5 45 11 7 18 9 2LA-HSE921U 15 145 2 1.1.6 36. 33. 3 65 3 4 55. 5 65 11 3 18 2 2LA-HSE922U 11 15 2 1.1.6 36.5 34.5 3 7 3 5 57. 5 85 1 8 17 5 2LA-HSE924U 12 165 22 1.1.6 46.5 44. 4 75 4 5 74. 7 55 9 9 15 9 2LA-HSE926U 13 18 24 1.5 1 57.5 54.5 5 85 5 55 91. 9 3 9 1 14 6 2LA-HSE928U 14 19 24 1.5 1 58. 57. 5 9 5 8 95. 9 7 8 5 13 8 2LA-HSE93U 15 21 28 2 1 77.5 75.5 7 9 7 7 125 12 8 7 8 12 6 2LA-HSE932U 16 22 28 2 1 78. 78.5 7 95 8 131 13 4 7 4 11 9 2LA-HSE934U 17 23 28 2 1 79. 81.5 8 5 8 3 136 13 9 7 11 3 1 Minimum allowable value fo cone adius dimension o 1. 114

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 17.2 6..13 57.6 56.6 64.4 66.8 54.5 52.5 67.5 69.5.6.3 18.9 7.7.18 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 19.8 8.3.2 68.6 67.4 76.4 79.1 65.5 64.5 79.5 8.5 1.6 2.7 8.9.21 73.6 72.4 81.4 84. 7.5 69.5 84.5 85.5 1.6 23.6 14.34 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 24.5 15.36 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 25.4 16.38 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 27.8 22.54 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 28.7 23.56 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 29.6 24.59 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 32. 32.82 113.8 111.7 126.2 13.6 17 14.5 133 135.5 1.6 32.9 33.85 118.8 116.7 131.2 135.6 112 19.5 138 14.5 1.6 33.8 35.88 123.8 121.7 136.2 14.6 117 114.5 143 145.5 1.6 37.1 47 1.2 135.4 133. 149.6 154.7 127 124.5 158 16.5 1.6 4.4 62 1.56 146.9 144.2 163.1 168.9 138.5 135.5 171.5 174.5 1.5 1 42.2 66 1.66 156.9 154.2 173.1 178.8 148.5 145.5 181.5 184.5 1.5 1 47. 99 2.58 17.5 167.3 189.5 196.3 16 155.5 2 24.5 2 1 48.8 15 2.71 18.5 177.3 199.5 26.3 17 165.5 21 214.5 2 1 5.6 111 2.84 19.5 187.3 29.5 216.3 18 175.5 22 224.5 2 1 115

Main Spindle Beaings High-speed angula contact ball beaings (steel ball type) 2LA-HSE9U seies Contact angle 25 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 2LA-HSE91UAD 5 72 12.6.3 1.3 7.7 1 5 785 14.8 1 51 2 5 32 1 2LA-HSE911UAD 55 8 13 1.6 12.9 9.6 1 31 98 18.4 1 88 18 5 29 2LA-HSE912UAD 6 85 13 1.6 13.3 1.5 1 36 1 7 2.2 2 6 17 2 27 2LA-HSE913UAD 65 9 13 1.6 13.5 11. 1 37 1 12 21.1 2 16 16 1 25 3 2LA-HSE914UAD 7 1 16 1.6 19.7 15.6 2 1 1 59 29.9 3 5 14 7 23 2LA-HSE915UAD 75 15 16 1.6 2.5 17. 2 9 1 73 32. 3 3 13 9 21 7 2LA-HSE916UAD 8 11 16 1.6 2.7 17.7 2 11 1 81 33.5 3 45 13 2 2 6 2LA-HSE917UAD 85 12 18 1.1.6 28.1 23.4 2 86 2 39 45. 4 6 12 2 19 1 2LA-HSE918UAD 9 125 18 1.1.6 29.2 25.4 2 98 2 59 48.5 4 95 11 6 18 2 2LA-HSE919UAD 95 13 18 1.1.6 29.5 26.4 3 2 69 5.5 5 2 11 1 17 4 2LA-HSE92UAD 1 14 2 1.1.6 34.5 31. 3 5 3 15 59. 6 5 1 4 16 3 2LA-HSE921UAD 15 145 2 1.1.6 34.5 32. 3 55 3 3 61.5 6 3 1 15 7 2LA-HSE922UAD 11 15 2 1.1.6 35. 33.5 3 6 3 4 64. 6 55 9 6 15 1 2LA-HSE924UAD 12 165 22 1.1.6 45. 42.5 4 6 4 35 82. 8 4 8 8 13 7 2LA-HSE926UAD 13 18 24 1.5 1 55.5 53. 5 7 5 4 11 1 4 8 1 12 6 2LA-HSE928UAD 14 19 24 1.5 1 56. 55. 5 7 5 6 15 1 8 7 6 11 9 2LA-HSE93UAD 15 21 28 2 1 75. 73. 7 65 7 45 14 14 3 6 9 1 9 2LA-HSE932UAD 16 22 28 2 1 75.5 76. 7 7 7 75 146 14 9 6 6 1 3 2LA-HSE934UAD 17 23 28 2 1 76. 79. 7 75 8 5 152 15 5 6 2 9 8 1 Minimum allowable value fo cone adius dimension o 1. 116

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 2.3 6..13 57.6 56.6 64.4 66.7 54.5 52.5 67.5 69.5.6.3 22.4 7.7.18 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 23.5 8.3.2 68.6 67.4 76.4 79. 65.5 64.5 79.5 8.5 1.6 24.7 8.9.21 73.6 72.4 81.4 84. 7.5 69.5 84.5 85.5 1.6 28. 14.34 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 29.1 15.36 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 3.3 16.38 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 33.1 22.54 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 34.2 23.56 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 35.4 24.59 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 38.2 32.82 113.8 111.7 126.2 13.6 17 14.5 133 135.5 1.6 39.3 33.85 118.8 116.7 131.2 135.6 112 19.5 138 14.5 1.6 4.5 35.88 123.8 121.7 136.2 14.6 117 114.5 143 145.5 1.6 44.4 47 1.2 135.4 133. 149.6 154.7 127 124.5 158 16.5 1.6 48.4 62 1.56 146.9 144.2 163.1 168.8 138.5 135.5 171.5 174.5 1.5 1 5.7 66 1.66 156.9 154.2 173.1 178.8 148.5 145.5 181.5 184.5 1.5 1 56.3 99 2.58 17.5 167.3 189.5 196.3 16 155.5 2 24.5 2 1 58.6 15 2.71 18.5 177.3 199.5 26.3 17 165.5 21 214.5 2 1 6.9 111 2.84 19.5 187.3 29.5 216.3 18 175.5 22 224.5 2 1 117

Main Spindle Beaings High-speed angula contact ball beaings (steel ball type) 2LA-HSE seies Contact angle 15 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 2LA-HSE1C 5 8 16 1.6 15.9 11.4 1 62 1 16 16.7 1 7 1.4 2 5 32 5 2LA-HSE11C 55 9 18 1.1.6 17.3 13.6 1 76 1 38 19.9 2 3 1.6 18 3 29 1 2LA-HSE12C 6 95 18 1.1.6 18.1 15. 1 85 1 53 22. 2 24 1.7 17 2 27 2 2LA-HSE13C 65 1 18 1.1.6 18.4 15.8 1 87 1 61 23.2 2 36 1.8 16 1 25 6 2LA-HSE14C 7 11 2 1.1.6 22.5 19.9 2 29 2 3 29.2 2 98 1.8 14 8 23 4 2LA-HSE15C 75 115 2 1.1.6 23.9 22.4 2 44 2 29 33. 3 35 1.9 14 22 2 2LA-HSE16C 8 125 22 1.1.6 27.4 25.7 2 79 2 62 38. 3 85 1.9 13 2 6 2LA-HSE17C 85 13 22 1.1.6 27.7 26.8 2 83 2 74 39.5 4 1.9 12 4 19 6 2LA-HSE18C 9 14 24 1.5 1 32. 31.5 3 3 3 2 46. 4 7 1.9 11 6 18 3 2LA-HSE19C 95 145 24 1.5 1 32.5 32.5 3 3 3 35 48. 4 9 11. 11 1 17 6 2LA-HSE2C 1 15 24 1.5 1 33.5 35. 3 45 3 6 51.5 5 25 11. 1 6 16 9 2LA-HSE21C 15 16 26 2 1 38.5 4.5 3 95 4 15 6. 6 1 11. 1 15 9 2LA-HSE22C 11 17 28 2 1 48. 49.5 4 9 5 72.5 7 4 1.9 9 5 15 1 2LA-HSE24C 12 18 28 2 1 48. 51.5 4 9 5 25 75.5 7 7 11. 8 9 14 1 2LA-HSE26C 13 2 33 2 1 69. 71. 7 5 7 25 14 1 6 1.8 8 1 12 8 2LA-HSE28C 14 21 33 2 1 71.5 77. 7 3 7 85 113 11 5 1.9 7 6 12 1 2LA-HSE3C 15 225 35 2.1 1.1 73.5 83. 7 5 8 45 122 12 4 11. 7 1 11 3 2LA-HSE32C 16 24 38 2.1 1.1 86. 97. 8 8 9 85 142 14 5 11. 6 7 1 6 2LA-HSE34C 17 26 42 2.1 1.1 99. 111 1 1 11 3 163 16 7 1.9 6 2 9 8 1 Minimum allowable value fo cone adius dimension o 1. 118

Main Spindle Beaings 1as as dadb as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 16.8 12.26 6.1 58.6 69.9 73.3 55.5 54.5 74.5 75.5 1.6 18.8 16.4 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 19.5 17.42 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 2.1 18.45 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 22.2 24.64 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 22.8 25.68 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 24.8 34.91 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 25.5 35.96 11.8 99.9 113.2 117.5 92 89.5 123 125.5 1.6 27.5 45 1.25 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 28.2 47 1.3 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 28.9 49 1.36 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 3.9 61 1.73 125.8 123.6 139.2 144.1 115 11.5 15 154.5 2 1 32.9 77 2.13 132.4 129.8 147.6 153.3 12 115.5 16 164.5 2 1 34.2 82 2.28 142.4 139.8 157.6 163.3 13 125.5 17 174.5 2 1 38.8 13 3.4 155.5 152.3 174.5 181.6 14 135.5 19 194.5 2 1 4.1 129 3.68 165.5 162.3 184.5 191.5 15 145.5 2 24.5 2 1 42.8 163 4.46 178. 174.8 197. 24.1 162 157 213 218 2 1 46. 26 5.46 189.5 186. 21.5 218.2 172 167 228 233 2 1 5. 272 7.37 23.6 199.8 226.4 234.9 182 177 248 253 2 1 119

Main Spindle Beaings High-speed angula contact ball beaings (steel ball type) 2LA-HSE seies Contact angle 2 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 2LA-HSE1 5 8 16 1.6 15.5 11.2 1 58 1 14 18.7 1 9 21 6 34 9 2LA-HSE11 55 9 18 1.1.6 16.8 13.3 1 72 1 35 22.2 2 26 19 4 31 3 2LA-HSE12 6 95 18 1.1.6 17.6 14.7 1 8 1 49 24.6 2 5 18 2 29 3 2LA-HSE13 65 1 18 1.1.6 17.9 15.4 1 83 1 57 25.9 2 64 17 1 27 5 2LA-HSE14 7 11 2 1.1.6 21.9 19.4 2 23 1 98 32.5 3 3 15 6 25 2 2LA-HSE15 75 115 2 1.1.6 23.3 21.9 2 38 2 23 36.5 3 75 14 8 23 9 2LA-HSE16 8 125 22 1.1.6 26.7 25.1 2 72 2 56 42. 4 3 13 7 22 1 2LA-HSE17 85 13 22 1.1.6 27. 26.2 2 76 2 67 44. 4 5 13 1 21 1 2LA-HSE18 9 14 24 1.5 1 31.5 3.5 3 2 3 15 51.5 5 25 12 2 19 7 2LA-HSE19 95 145 24 1.5 1 31.5 32. 3 25 3 25 53.5 5 45 11 7 18 9 2LA-HSE2 1 15 24 1.5 1 33. 34.5 3 35 3 5 57.5 5 85 11 3 18 2 2LA-HSE21 15 16 26 2 1 37.5 39.5 3 85 4 5 66.5 6 8 1 6 17 1 2LA-HSE22 11 17 28 2 1 46.5 48. 4 75 4 9 8.5 8 2 1 16 2 2LA-HSE24 12 18 28 2 1 47. 5. 4 8 5 1 84. 8 6 9 4 15 1 2LA-HSE26 13 2 33 2 1 67.5 69.5 6 9 7 1 116 11 9 8 5 13 8 2LA-HSE28 14 21 33 2 1 7. 75. 7 1 7 65 126 12 8 8 13 2LA-HSE3 15 225 35 2.1 1.1 72. 81. 7 3 8 25 136 13 9 7 5 12 1 2LA-HSE32 16 24 38 2.1 1.1 84. 94.5 8 55 9 65 159 16 2 7 11 3 2LA-HSE34 17 26 42 2.1 1.1 96.5 18 9 85 11 1 182 18 6 6 5 1 6 1 Minimum allowable value fo cone adius dimension o 1. 12

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 19.9 12.26 6.1 58.6 69.9 73.2 55.5 54.5 74.5 75.5 1.6 22.3 16.4 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 23.2 17.42 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 24.1 18.45 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 26.5 24.64 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 27.4 25.68 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 29.8 34.91 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 3.7 35.96 11.8 99.9 113.2 117.4 92 89.5 123 125.5 1.6 33.1 45 1.25 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 34. 47 1.3 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 34.9 49 1.36 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 37.3 61 1.73 125.8 123.6 139.2 144.1 115 11.5 15 154.5 2 1 39.7 77 2.13 132.4 129.8 147.6 153.2 12 115.5 16 164.5 2 1 41.5 82 2.28 142.4 139.8 157.6 163.2 13 125.5 17 174.5 2 1 46.8 13 3.4 155.5 152.3 174.5 181.5 14 135.5 19 194.5 2 1 48.6 129 3.68 165.5 162.3 184.5 191.5 15 145.5 2 24.5 2 1 51.9 163 4.46 178. 174.8 197. 24. 162 157 213 218 2 1 55.7 26 5.46 189.5 186. 21.5 218.2 172 167 228 233 2 1 6.4 272 7.37 23.6 199.8 226.4 234.9 182 177 248 253 2 1 121

Main Spindle Beaings High-speed angula contact ball beaings (steel ball type) 2LA-HSE seies Contact angle 25 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 2LA-HSE1AD 5 8 16 1.6 15. 1.8 1 53 1 1 2.9 2 13 19 2 3 1 2LA-HSE11AD 55 9 18 1.1.6 16.3 12.9 1 66 1 31 24.8 2 53 17 2 27 2LA-HSE12AD 6 95 18 1.1.6 17.1 14.2 1 74 1 45 27.4 2 8 16 1 25 3 2LA-HSE13AD 65 1 18 1.1.6 17.3 14.9 1 77 1 52 28.9 2 94 15 1 23 7 2LA-HSE14AD 7 11 2 1.1.6 21.2 18.8 2 16 1 92 36.5 3 7 13 9 21 7 2LA-HSE15AD 75 115 2 1.1.6 22.5 21.2 2 3 2 16 41. 4 2 13 2 2 6 2LA-HSE16AD 8 125 22 1.1.6 25.8 24.3 2 63 2 48 47. 4 8 12 2 19 1 2LA-HSE17AD 85 13 22 1.1.6 26.1 25.4 2 66 2 59 49. 5 11 6 18 2 2LA-HSE18AD 9 14 24 1.5 1 3.5 29.7 3 1 3 5 57.5 5 85 1 9 17 2LA-HSE19AD 95 145 24 1.5 1 3.5 31. 3 15 3 15 6. 6 1 1 4 16 3 2LA-HSE2AD 1 15 24 1.5 1 31.5 33. 3 25 3 4 64. 6 55 1 15 7 2LA-HSE21AD 15 16 26 2 1 36.5 38.5 3 7 3 9 74.5 7 6 9 4 14 8 2LA-HSE22AD 11 17 28 2 1 45. 46.5 4 6 4 75 9. 9 15 8 9 14 2LA-HSE24AD 12 18 28 2 1 45.5 48.5 4 65 4 95 94. 9 55 8 3 13 2LA-HSE26AD 13 2 33 2 1 65. 67.5 6 65 6 85 13 13 2 7 6 11 9 2LA-HSE28AD 14 21 33 2 1 67.5 73. 6 9 7 4 141 14 3 7 1 11 2 2LA-HSE3AD 15 225 35 2.1 1.1 69.5 78.5 7 5 8 151 15 4 6 7 1 4 2LA-HSE32AD 16 24 38 2.1 1.1 81. 91.5 8 3 9 35 177 18 6 2 9 8 2LA-HSE34AD 17 26 42 2.1 1.1 93. 15 9 5 1 7 23 2 7 5 8 9 1 1 Minimum allowable value fo cone adius dimension o 1. 122

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 23.3 12.26 6.1 58.6 69.9 73.2 55.5 54.5 74.5 75.5 1.6 26.1 16.4 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 27.2 17.42 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 28.4 18.45 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 31.1 24.64 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 32.3 25.68 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 35.1 34.91 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 36.2 35.96 11.8 99.9 113.2 117.4 92 89.5 123 125.5 1.6 39. 45 1.25 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 4.2 47 1.3 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 41.3 49 1.36 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 44.1 61 1.73 125.8 123.6 139.2 144.1 115 11.5 15 154.5 2 1 46.9 77 2.13 132.4 129.8 147.6 153.2 12 115.5 16 164.5 2 1 49.2 82 2.28 142.4 139.8 157.6 163.2 13 125.5 17 174.5 2 1 55.3 13 3.4 155.5 152.3 174.5 181.5 14 135.5 19 194.5 2 1 57.6 129 3.68 165.5 162.3 184.5 191.5 15 145.5 2 24.5 2 1 61.5 163 4.46 178. 174.8 197. 24. 162 157 213 218 2 1 66. 26 5.46 189.5 186. 21.5 218.2 172 167 228 233 2 1 71.5 272 7.37 23.6 199.8 226.4 234.9 182 177 248 253 2 1 123

Main Spindle Beaings High-speed angula contact ball beaings (ceamic ball type) 5S-2LA-HSE9U seies Contact angle 15 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-2LA-HSE91UC 5 72 12.6.3 11. 5.65 1 12 575 7.45 76 7.6 25 6 42 4 5S-2LA-HSE911UC 55 8 13 1.6 13.7 7.5 1 39 715 9.3 95 7.5 23 1 38 3 5S-2LA-HSE912UC 6 85 13 1.6 14.2 7.7 1 45 785 1.1 1 4 7.6 21 5 35 7 5S-2LA-HSE913UC 65 9 13 1.6 14.3 8.5 1 46 82 1.6 1 9 7.6 2 1 33 4 5S-2LA-HSE914UC 7 1 16 1.6 2.9 11.5 2 14 1 17 15.2 1 56 7.5 18 4 3 4 5S-2LA-HSE915UC 75 15 16 1.6 21.8 12.5 2 22 1 27 16.6 1 7 7.6 17 3 28 7 5S-2LA-HSE916UC 8 11 16 1.6 22. 13. 2 24 1 33 17.3 1 77 7.6 16 4 27 2 5S-2LA-HSE917UC 85 12 18 1.1.6 29.8 17.2 3 5 1 75 22.9 2 34 7.5 15 2 25 2 5S-2LA-HSE918UC 9 125 18 1.1.6 31. 18.6 3 15 1 9 24.8 2 53 7.6 14 5 24 1 5S-2LA-HSE919UC 95 13 18 1.1.6 31.5 19.4 3 2 1 97 25.8 2 64 7.6 13 9 23 5S-2LA-HSE92UC 1 14 2 1.1.6 36.5 22.7 3 7 2 31 29.9 3 5 7.6 13 21 6 5S-2LA-HSE921UC 15 145 2 1.1.6 37. 23.6 3 75 2 4 31. 3 2 7.6 12 5 2 7 5S-2LA-HSE922UC 11 15 2 1.1.6 37.5 24.5 3 8 2 5 32. 3 3 7.7 12 19 9 5S-2LA-HSE924UC 12 165 22 1.1.6 48. 31.5 4 85 3 2 41.5 4 25 7.6 1 9 18 2 5S-2LA-HSE926UC 13 18 24 1.5 1 59. 38.5 6 5 3 95 51. 5 25 7.6 1 1 16 7 5S-2LA-HSE928UC 14 19 24 1.5 1 59.5 4.5 6 5 4 1 53.5 5 5 7.6 9 5 15 7 5S-2LA-HSE93UC 15 21 28 2 1 79.5 53.5 8 1 5 45 71.5 7 3 7.6 8 7 14 4 5S-2LA-HSE932UC 16 22 28 2 1 8. 55.5 8 2 5 7 74.5 7 6 7.6 8 2 13 6 5S-2LA-HSE934UC 17 23 28 2 1 81. 58. 8 25 5 9 77. 7 9 7.7 7 8 12 9 1 Minimum allowable value fo cone adius dimension o 1. 124

Main Spindle Beaings 1as as dadb as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 14.2 6..12 57.6 56.6 64.4 66.8 54.5 52.5 67.5 69.5.6.3 15.6 7.7.17 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 16.3 8.3.18 68.6 67.4 76.4 79.1 65.5 64.5 79.5 8.5 1.6 17. 8.9.19 73.6 72.4 81.4 84.1 7.5 69.5 84.5 85.5 1.6 19.5 14.31 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 2.1 15.33 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 2.8 16.34 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 22.8 22.48 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 23.5 23.51 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 24.2 24.53 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 26.2 32.74 113.8 111.7 126.2 13.7 17 14.5 133 135.5 1.6 26.9 33.77 118.8 116.7 131.2 135.7 112 19.5 138 14.5 1.6 27.5 35.8 123.8 121.7 136.2 14.7 117 114.5 143 145.5 1.6 3.2 47 1.8 135.4 133. 149.6 154.8 127 124.5 158 16.5 1.6 32.9 62 1.4 146.9 144.2 163.1 168.9 138.5 135.5 171.5 174.5 1.5 1 34.3 66 1.48 156.9 154.2 173.1 178.9 148.5 145.5 181.5 184.5 1.5 1 38.3 99 2.3 17.5 167.3 189.5 196.4 16 155.5 2 24.5 2 1 39.6 15 2.42 18.5 177.3 199.5 26.3 17 165.5 21 214.5 2 1 41. 111 2.55 19.5 187.3 29.5 216.3 18 175.5 22 224.5 2 1 125

Main Spindle Beaings High-speed angula contact ball beaings (ceamic ball type) 5S-2LA-HSE9U seies Contact angle 2 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-2LA-HSE91U 5 72 12.6.3 1.7 5.5 1 9 56 8.55 875 28 2 46 1 5S-2LA-HSE911U 55 8 13 1.6 13.3 6.85 1 36 7 1.6 1 9 25 5 41 7 5S-2LA-HSE912U 6 85 13 1.6 13.8 7.5 1 41 765 11.6 1 19 237 38 8 5S-2LA-HSE913U 65 9 13 1.6 13.9 7.85 1 42 8 12.2 1 25 22 2 36 3 5S-2LA-HSE914U 7 1 16 1.6 2.4 11.2 2 8 1 14 17.4 1 78 2 2 33 1 5S-2LA-HSE915U 75 15 16 1.6 21.2 12.2 2 16 1 24 19. 1 94 19 1 31 3 5S-2LA-HSE916U 8 11 16 1.6 21.4 12.7 2 19 1 29 19.8 2 2 18 1 29 6 5S-2LA-HSE917U 85 12 18 1.1.6 29.1 16.8 2 96 1 71 26.1 2 67 16 8 27 4 5S-2LA-HSE918U 9 125 18 1.1.6 3. 18.1 3 1 1 85 28.3 2 89 16 26 2 5S-2LA-HSE919U 95 13 18 1.1.6 3.5 18.9 3 1 1 93 29.4 3 15 3 25 5S-2LA-HSE92U 1 14 2 1.1.6 35.5 22.1 3 6 2 26 34. 3 5 14 3 23 4 5S-2LA-HSE921U 15 145 2 1.1.6 36. 23. 3 65 2 35 35.5 3 65 13 8 22 5 5S-2LA-HSE922U 11 15 2 1.1.6 36.5 23.9 3 7 2 43 37. 3 8 13 2 21 6 5S-2LA-HSE924U 12 165 22 1.1.6 46.5 3.5 4 75 3 1 47.5 4 85 12 1 19 7 5S-2LA-HSE926U 13 18 24 1.5 1 57.5 38. 5 85 3 85 58.5 6 11 1 18 1 5S-2LA-HSE928U 14 19 24 1.5 1 58. 39.5 5 9 4 61. 6 25 1 4 17 5S-2LA-HSE93U 15 21 28 2 1 77.5 52. 7 9 5 35 81. 8 3 9 6 15 6 5S-2LA-HSE932U 16 22 28 2 1 78. 54.5 7 95 5 55 84.5 8 65 9 1 14 8 5S-2LA-HSE934U 17 23 28 2 1 79. 56.5 8 5 5 75 88. 9 8 6 14 1 1 Minimum allowable value fo cone adius dimension o 1. 126

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 17.2 6..12 57.6 56.6 64.4 66.8 54.5 52.5 67.5 69.5.6.3 18.9 7.7.17 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 19.8 8.3.18 68.6 67.4 76.4 79.1 65.5 64.5 79.5 8.5 1.6 2.7 8.9.19 73.6 72.4 81.4 84. 7.5 69.5 84.5 85.5 1.6 23.6 14.31 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 24.5 15.33 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 25.4 16.34 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 27.8 22.48 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 28.7 23.51 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 29.6 24.53 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 32. 32.74 113.8 111.7 126.2 13.6 17 14.5 133 135.5 1.6 32.9 33.77 118.8 116.7 131.2 135.6 112 19.5 138 14.5 1.6 33.8 35.8 123.8 121.7 136.2 14.6 117 114.5 143 145.5 1.6 37.1 47 1.8 135.4 133. 149.6 154.7 127 124.5 158 16.5 1.6 4.4 62 1.4 146.9 144.2 163.1 168.9 138.5 135.5 171.5 174.5 1.5 1 42.2 66 1.48 156.9 154.2 173.1 178.8 148.5 145.5 181.5 184.5 1.5 1 47. 99 2.3 17.5 167.3 189.5 196.3 16 155.5 2 24.5 2 1 48.8 15 2.42 18.5 177.3 199.5 26.3 17 165.5 21 214.5 2 1 5.6 111 2.55 19.5 187.3 29.5 216.3 18 175.5 22 224.5 2 1 127

Main Spindle Beaings High-speed angula contact ball beaings (ceamic ball type) 5S-2LA-HSE9U seies Contact angle 25 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-2LA-HSE91UAD 5 72 12.6.3 1.3 5.3 1 5 545 9.75 995 24 3 41 5S-2LA-HSE911UAD 55 8 13 1.6 12.9 6.65 1 31 68 12.1 1 24 22 37 5S-2LA-HSE912UAD 6 85 13 1.6 13.3 7.3 1 36 74 13.3 1 36 2 5 34 5 5S-2LA-HSE913UAD 65 9 13 1.6 13.5 7.6 1 37 775 13.9 1 42 19 2 32 3 5S-2LA-HSE914UAD 7 1 16 1.6 19.7 1.8 2 1 1 1 19.9 2 3 17 5 29 4 5S-2LA-HSE915UAD 75 15 16 1.6 2.5 11.8 2 9 1 2 21.5 2 2 16 5 27 8 5S-2LA-HSE916UAD 8 11 16 1.6 2.7 12.3 2 11 1 25 22.5 2 3 15 6 26 3 5S-2LA-HSE917UAD 85 12 18 1.1.6 28.1 16.2 2 86 1 66 29.4 3 14 5 24 4 5S-2LA-HSE918UAD 9 125 18 1.1.6 29.2 17.6 2 98 1 79 31.5 3 25 13 8 23 3 5S-2LA-HSE919UAD 95 13 18 1.1.6 29.5 18.3 3 1 87 33. 3 4 13 2 22 2 5S-2LA-HSE92UAD 1 14 2 1.1.6 34.5 21.4 3 5 2 19 39. 4 12 4 2 8 5S-2LA-HSE921UAD 15 145 2 1.1.6 34.5 22.3 3 55 2 27 4.5 4 15 11 9 2 5S-2LA-HSE922UAD 11 15 2 1.1.6 35. 23.1 3 6 2 36 42. 4 3 11 4 19 2 5S-2LA-HSE924UAD 12 165 22 1.1.6 45. 29.6 4 6 3 54. 5 55 1 4 17 5 5S-2LA-HSE926UAD 13 18 24 1.5 1 55.5 36.5 5 7 3 75 67. 6 85 9 6 16 1 5S-2LA-HSE928UAD 14 19 24 1.5 1 56. 38. 5 7 3 9 7. 7 15 9 15 2 5S-2LA-HSE93UAD 15 21 28 2 1 75. 5.5 7 65 5 15 92.5 9 45 8 2 13 9 5S-2LA-HSE932UAD 16 22 28 2 1 75.5 52.5 7 7 5 35 96.5 9 85 7 8 13 2 5S-2LA-HSE934UAD 17 23 28 2 1 76. 54.5 7 75 5 6 1 1 2 7 4 12 5 1 Minimum allowable value fo cone adius dimension o 1. 128

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 2.3 6..12 57.6 56.6 64.4 66.7 54.5 52.5 67.5 69.5.6.3 22.4 7.7.17 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 23.5 8.3.18 68.6 67.4 76.4 79. 65.5 64.5 79.5 8.5 1.6 24.7 8.9.19 73.6 72.4 81.4 84. 7.5 69.5 84.5 85.5 1.6 28. 14.31 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 29.1 15.33 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 3.3 16.34 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 33.1 22.48 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 34.2 23.51 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 35.4 24.53 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 38.2 32.74 113.8 111.7 126.2 13.6 17 14.5 133 135.5 1.6 39.3 33.77 118.8 116.7 131.2 135.6 112 19.5 138 14.5 1.6 4.5 35.8 123.8 121.7 136.2 14.6 117 114.5 143 145.5 1.6 44.4 47 1.8 135.4 133. 149.6 154.7 127 124.5 158 16.5 1.6 48.4 62 1.4 146.9 144.2 163.1 168.8 138.5 135.5 171.5 174.5 1.5 1 5.7 66 1.48 156.9 154.2 173.1 178.8 148.5 145.5 181.5 184.5 1.5 1 56.3 99 2.3 17.5 167.3 189.5 196.3 16 155.5 2 24.5 2 1 58.6 15 2.42 18.5 177.3 199.5 26.3 17 165.5 21 214.5 2 1 6.9 111 2.55 19.5 187.3 29.5 216.3 18 175.5 22 224.5 2 1 129

Main Spindle Beaings High-speed angula contact ball beaings (ceamic ball type) 5S-2LA-HSE seies Contact angle 15 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-2LA-HSE1C 5 8 16 1.6 15.9 7.9 1 62 85 1.5 1 7 7.2 24 39 8 5S-2LA-HSE11C 55 9 18 1.1.6 17.3 9.4 1 76 96 12.5 1 28 7.4 21 5 35 7 5S-2LA-HSE12C 6 95 18 1.1.6 18.1 1.4 1 85 1 6 13.9 1 42 7.4 2 1 33 4 5S-2LA-HSE13C 65 1 18 1.1.6 18.4 1.9 1 87 1 12 14.6 1 49 7.5 18 9 31 4 5S-2LA-HSE14C 7 11 2 1.1.6 22.5 13.8 2 29 1 41 18.4 1 88 7.5 17 3 28 7 5S-2LA-HSE15C 75 115 2 1.1.6 23.9 15.5 2 44 1 59 2.8 2 12 7.5 16 4 27 2 5S-2LA-HSE16C 8 125 22 1.1.6 27.4 17.8 2 79 1 82 23.8 2 43 7.5 15 2 25 2 5S-2LA-HSE17C 85 13 22 1.1.6 27.7 18.6 2 83 1 9 24.9 2 54 7.6 14 5 24 1 5S-2LA-HSE18C 9 14 24 1.5 1 32. 21.8 3 3 2 22 29.2 2 97 7.6 13 6 22 5 5S-2LA-HSE19C 95 145 24 1.5 1 32.5 22.7 3 3 2 31 3.5 3 1 7.6 13 21 6 5S-2LA-HSE2C 1 15 24 1.5 1 33.5 24.4 3 45 2 48 32.5 3 35 7.6 12 5 2 7 5S-2LA-HSE21C 15 16 26 2 1 38.5 28.2 3 95 2 88 38. 3 85 7.6 11 8 19 5 5S-2LA-HSE22C 11 17 28 2 1 48. 34. 4 9 3 5 45.5 4 65 7.6 11 1 18 5 5S-2LA-HSE24C 12 18 28 2 1 48. 35.5 4 9 3 65 47.5 4 85 7.6 1 4 17 2 5S-2LA-HSE26C 13 2 33 2 1 69. 49.5 7 5 5 66. 6 7 7.5 9 5 15 7 5S-2LA-HSE28C 14 21 33 2 1 71.5 53.5 7 3 5 45 71.5 7 3 7.6 8 9 14 8 5S-2LA-HSE3C 15 225 35 2.1 1.1 73.5 57.5 7 5 5 85 77. 7 85 7.6 8 3 13 8 5S-2LA-HSE32C 16 24 38 2.1 1.1 86. 67. 8 8 6 85 9. 9 15 7.6 7 8 12 9 5S-2LA-HSE34C 17 26 42 2.1 1.1 99. 77. 1 1 7 85 13 1 5 7.6 7 3 12 1 Minimum allowable value fo cone adius dimension o 1. 13

Main Spindle Beaings 1as as dadb as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 16.8 12.23 6.1 58.6 69.9 73.3 55.5 54.5 74.5 75.5 1.6 18.8 16.37 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 19.5 17.4 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 2.1 18.42 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 22.2 24.6 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 22.8 25.64 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 24.8 34.86 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 25.5 35.9 11.8 99.9 113.2 117.5 92 89.5 123 125.5 1.6 27.5 45 1.18 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 28.2 47 1.23 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 28.9 49 1.28 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 3.9 61 1.63 125.8 123.6 139.2 144.1 115 11.5 15 154.5 2 1 32.9 77 1.99 132.4 129.8 147.6 153.3 12 115.5 16 164.5 2 1 34.2 82 2.14 142.4 139.8 157.6 163.3 13 125.5 17 174.5 2 1 38.8 13 3.18 155.5 152.3 174.5 181.6 14 135.5 19 194.5 2 1 4.1 129 3.41 165.5 162.3 184.5 191.5 15 145.5 2 24.5 2 1 42.8 163 4.17 178. 174.8 197. 24.1 162 157 213 218 2 1 46. 26 5.9 189.5 186. 21.5 218.2 172 167 228 233 2 1 5. 272 6.9 23.6 199.8 226.4 234.9 182 177 248 253 2 1 131

Main Spindle Beaings High-speed angula contact ball beaings (ceamic ball type) 5S-2LA-HSE seies Contact angle 2 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-2LA-HSE1 5 8 16 1.6 15.5 7.75 1 58 79 12.1 1 23 26 5 43 3 5S-2LA-HSE11 55 9 18 1.1.6 16.8 9.2 1 72 935 14.4 1 46 23 7 38 8 5S-2LA-HSE12 6 95 18 1.1.6 17.6 1.2 1 8 1 4 15.9 1 62 22 2 36 3 5S-2LA-HSE13 65 1 18 1.1.6 17.9 1.7 1 83 1 9 16.7 1 71 2 8 34 1 5S-2LA-HSE14 7 11 2 1.1.6 21.9 13.5 2 23 1 37 21.1 2 15 19 1 31 2 5S-2LA-HSE15 75 115 2 1.1.6 23.3 15.2 2 38 1 55 23.8 2 42 18 1 29 6 5S-2LA-HSE16 8 125 22 1.1.6 26.7 17.4 2 72 1 77 27.2 2 78 16 8 27 4 5S-2LA-HSE17 85 13 22 1.1.6 27. 18.1 2 76 1 85 28.4 2 9 16 26 2 5S-2LA-HSE18 9 14 24 1.5 1 31.5 21.3 3 2 2 17 33.5 3 4 15 24 5 5S-2LA-HSE19 95 145 24 1.5 1 31.5 22.1 3 25 2 26 34.5 3 55 14 3 23 4 5S-2LA-HSE2 1 15 24 1.5 1 33. 23.8 3 35 2 42 37.5 3 8 13 8 22 5 5S-2LA-HSE21 15 16 26 2 1 37.5 27.5 3 85 2 81 43. 4 4 13 21 2 5S-2LA-HSE22 11 17 28 2 1 46.5 33.5 4 75 3 4 52. 5 3 12 3 2 1 5S-2LA-HSE24 12 18 28 2 1 47. 35. 4 8 3 55 54.5 5 55 11 5 18 7 5S-2LA-HSE26 13 2 33 2 1 67.5 48. 6 9 4 9 75.5 7 7 1 4 17 5S-2LA-HSE28 14 21 33 2 1 7. 52. 7 1 5 3 81.5 8 3 9 8 16 1 5S-2LA-HSE3 15 225 35 2.1 1.1 72. 56. 7 3 5 7 88. 8 95 9 2 15 5S-2LA-HSE32 16 24 38 2.1 1.1 84. 65.5 8 55 6 7 13 1 5 8 6 14 1 5S-2LA-HSE34 17 26 42 2.1 1.1 96.5 75. 9 85 7 65 118 12 8 13 1 1 Minimum allowable value fo cone adius dimension o 1. 132

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 19.9 12.23 6.1 58.6 69.9 73.2 55.5 54.5 74.5 75.5 1.6 22.3 16.37 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 23.2 17.4 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 24.1 18.42 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 26.5 24.6 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 27.4 25.64 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 29.8 34.86 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 3.7 35.9 11.8 99.9 113.2 117.4 92 89.5 123 125.5 1.6 33.1 45 1.18 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 34. 47 1.23 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 34.9 49 1.28 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 37.3 61 1.63 125.8 123.6 139.2 144.1 115 11.5 15 154.5 2 1 39.7 77 1.99 132.4 129.8 147.6 153.2 12 115.5 16 164.5 2 1 41.5 82 2.14 142.4 139.8 157.6 163.2 13 125.5 17 174.5 2 1 46.8 13 3.18 155.5 152.3 174.5 181.5 14 135.5 19 194.5 2 1 48.6 129 3.41 165.5 162.3 184.5 191.5 15 145.5 2 24.5 2 1 51.9 163 4.17 178. 174.8 197. 24. 162 157 213 218 2 1 55.7 26 5.9 189.5 186. 21.5 218.2 172 167 228 233 2 1 6.4 272 6.9 23.6 199.8 226.4 234.9 182 177 248 253 2 1 133

Main Spindle Beaings High-speed angula contact ball beaings (ceamic ball type) 5S-2LA-HSE seies Contact angle 25 d 5 17mm B 1 1 D D1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co lubication lubication 5S-2LA-HSE1AD 5 8 16 1.6 15. 7.5 1 53 765 13.8 1 4 22 8 38 5 5S-2LA-HSE11AD 55 9 18 1.1.6 16.3 8.9 1 66 91 16.4 1 67 2 5 34 5 5S-2LA-HSE12AD 6 95 18 1.1.6 17.1 9.85 1 74 1 18.1 1 85 19 2 32 3 5S-2LA-HSE13AD 65 1 18 1.1.6 17.3 1.4 1 77 1 6 19. 1 94 18 3 3 5S-2LA-HSE14AD 7 11 2 1.1.6 21.2 13. 2 16 1 33 24. 2 44 16 5 27 8 5S-2LA-HSE15AD 75 115 2 1.1.6 22.5 14.7 2 3 1 5 27. 2 76 15 6 26 3 5S-2LA-HSE16AD 8 125 22 1.1.6 25.8 16.9 2 63 1 72 31. 3 15 14 5 24 4 5S-2LA-HSE17AD 85 13 22 1.1.6 26.1 17.6 2 66 1 79 32.5 3 3 13 8 23 3 5S-2LA-HSE18AD 9 14 24 1.5 1 3.5 2.6 3 1 2 1 38. 3 85 12 9 21 7 5S-2LA-HSE19AD 95 145 24 1.5 1 3.5 21.4 3 15 2 19 39.5 4 12 4 2 8 5S-2LA-HSE2AD 1 15 24 1.5 1 31.5 23. 3 25 2 35 42.5 4 3 11 9 2 5S-2LA-HSE21AD 15 16 26 2 1 36.5 26.7 3 7 2 72 49. 5 11 2 18 9 5S-2LA-HSE22AD 11 17 28 2 1 45. 32.5 4 6 3 3 59.5 6 5 1 6 17 9 5S-2LA-HSE24AD 12 18 28 2 1 45.5 33.5 4 65 3 45 62. 6 3 9 9 16 7 5S-2LA-HSE26AD 13 2 33 2 1 65. 46.5 6 65 4 75 85.5 8 75 9 15 2 5S-2LA-HSE28AD 14 21 33 2 1 67.5 5.5 6 9 5 15 92.5 9 45 8 5 14 3 5S-2LA-HSE3AD 15 225 35 2.1 1.1 69.5 54.5 7 5 5 55 1 1 2 7 9 13 3 5S-2LA-HSE32AD 16 24 38 2.1 1.1 81. 63.5 8 3 6 45 117 11 9 7 4 12 5 5S-2LA-HSE34AD 17 26 42 2.1 1.1 93. 73. 9 5 7 45 134 13 7 6 9 11 6 1 Minimum allowable value fo cone adius dimension o 1. 134

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 23.3 12.23 6.1 58.6 69.9 73.2 55.5 54.5 74.5 75.5 1.6 26.1 16.37 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 27.2 17.4 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 28.4 18.4 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 31.1 24.6 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 32.3 25.64 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 35.1 34.86 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 36.2 35.9 11.8 99.9 113.2 117.4 92 89.5 123 125.5 1.6 39. 45 1.18 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 4.2 47 1.23 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 41.3 49 1.28 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 44.1 61 1.63 125.8 123.6 139.2 144.1 115 11.5 15 154.5 2 1 46.9 77 1.99 132.4 129.8 147.6 153.2 12 115.5 16 164.5 2 1 49.2 82 2.14 142.4 139.8 157.6 163.2 13 125.5 17 174.5 2 1 55.3 13 3.18 155.5 152.3 174.5 181.5 14 135.5 19 194.5 2 1 57.6 129 3.41 165.5 162.3 184.5 191.5 15 145.5 2 24.5 2 1 61.5 163 4.17 178. 174.8 197. 24. 162 157 213 218 2 1 66. 26 5.9 189.5 186. 21.5 218.2 172 167 228 233 2 1 71.5 272 6.9 23.6 199.8 226.4 234.9 182 177 248 253 2 1 135

Main Spindle Beaings Supe high-speed angula contact ball beaings 5S-2LA-HSF seies Contact angle 25 d 5 1mm B 1 1 DD1 d2 d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-HSF1AD 5 8 16 1.6 1.1 6.2 1 3 635 11.4 1 17 5 5S-2LA-HSF11AD 55 9 18 1.1.6 12.6 7.8 1 28 8 14.4 1 47 44 8 5S-2LA-HSF12AD 6 95 18 1.1.6 12.9 8.45 1 32 86 15.5 1 58 41 9 5S-2LA-HSF13AD 65 1 18 1.1.6 13.3 9.5 1 36 925 16.7 1 7 39 4 5S-2LA-HSF14AD 7 11 2 1.1.6 16.2 11.1 1 65 1 13 2.4 2 8 36 1 5S-2LA-HSF15AD 75 115 2 1.1.6 16.7 11.9 1 7 1 21 21.8 2 22 34 2 5S-2LA-HSF16AD 8 125 22 1.1.6 19.9 14.2 2 3 1 44 26. 2 66 31 7 5S-2LA-HSF17AD 85 13 22 1.1.6 2.1 14.7 2 5 1 5 27. 2 75 3 2 5S-2LA-HSF18AD 9 14 24 1.5 1 24.5 18.2 2 5 1 86 33.5 3 4 28 3 5S-2LA-HSF19AD 95 145 24 1.5 1 24.7 18.8 2 52 1 92 34.5 3 55 27 1 5S-2LA-HSF2AD 1 15 24 1.5 1 25.3 2. 2 58 2 4 37. 3 75 26 1 Minimum allowable value fo cone adius dimension o 1. 136

Main Spindle Beaings 1as as as dadb 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 23.3 1.29 61.6 6.6 68.4 7.9 55.5 54.5 74.5 75.5 1.6 26. 14.42 68.6 67.4 76.4 79.2 62 59.5 83 85.5 1.6 27.2 15.45 73.6 72.4 81.4 84.2 67 64.5 88 9.5 1.6 28.3 16.48 78.6 77.4 86.4 89.2 72 69.5 93 95.5 1.6 31.1 22.67 85.6 84.3 94.4 97.5 77 74.5 13 15.5 1.6 32.3 24.71 9.6 89.3 99.4 12.5 82 79.5 18 11.5 1.6 35. 31.95 97.6 96.2 17.4 11.8 87 84.5 118 12.5 1.6 36.2 33 1. 12.6 11.2 112.4 115.8 92 89.5 123 125.5 1.6 39. 41 1.31 19.8 18. 12.2 124.2 98.5 95.5 131.5 134.5 1.5 1 4.1 43 1.36 114.8 113. 125.2 129.2 13.5 1.5 136.5 139.5 1.5 1 41.3 45 1.42 119.8 118. 13.2 134.2 18.5 15.5 141.5 144.5 1.5 1 137

Main Spindle Beaings Eco-fiendly angula contact ball beaings (ceamic ball type) 5S-2LA-HSL9U seies Contact angle 2 d 5 13mm B 1 1 D dd1d2 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-HSL91U 5 72 12.6.3 1.7 5.5 1 9 56 8.55 875 46 1 5S-2LA-HSL911U 55 8 13 1.6 13.3 6.85 1 36 7 1.6 1 9 41 7 5S-2LA-HSL912U 6 85 13 1.6 13.8 7.5 1 41 765 11.6 1 19 38 8 5S-2LA-HSL913U 65 9 13 1.6 13.9 7.85 1 42 8 12.2 1 25 36 3 5S-2LA-HSL914U 7 1 16 1.6 2.4 11.2 2 8 1 14 17.4 1 78 33 1 5S-2LA-HSL915U 75 15 16 1.6 21.2 12.2 2 16 1 24 19. 1 94 31 3 5S-2LA-HSL916U 8 11 16 1.6 21.4 12.7 2 19 1 29 19.8 2 2 29 6 5S-2LA-HSL917U 85 12 18 1.1.6 29.1 16.8 2 96 1 71 26.1 2 67 27 4 5S-2LA-HSL918U 9 125 18 1.1.6 3. 18.1 3 1 1 85 28.3 2 89 26 2 5S-2LA-HSL919U 95 13 18 1.1.6 3.5 18.9 3 1 1 93 29.4 3 25 5S-2LA-HSL92U 1 14 2 1.1.6 35.5 22.1 3 6 2 26 34. 3 5 23 4 5S-2LA-HSL921U 15 145 2 1.1.6 36. 23. 3 65 2 35 35.5 3 65 22 5 5S-2LA-HSL922U 11 15 2 1.1.6 36.5 23.9 3 7 2 43 37. 3 8 21 6 5S-2LA-HSL924U 12 165 22 1.1.6 46.5 3.5 4 75 3 1 47.5 4 85 19 7 5S-2LA-HSL926U 13 18 24 1.5 1 57.5 38. 5 85 3 85 58.5 6 18 1 1 Minimum allowable value fo cone adius dimension o 1. 2 Fo the details of space dimensions, please contact NTN Engineeing. 138

Main Spindle Beaings l 1as as da Db Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Db 1as l 2 a (appox.) d1 D2 min max max min 17.2.11 57.6 66.8 54.5 69.5.3 8.5 5S-2LA-HSL91U 18.9.16 63.6 74.1 6.5 75.5.6 8.5 5S-2LA-HSL911U 19.8.17 68.6 79.1 65.5 8.5.6 8.5 5S-2LA-HSL912U 2.7.17 73.6 84. 7.5 85.5.6 8.5 5S-2LA-HSL913U 23.6.29 8.1 93.2 75.5 95.5.6 8.5 5S-2LA-HSL914U 24.5.31 85.1 98.2 8.5 1.5.6 9 5S-2LA-HSL915U 25.4.32 9.1 13.2 85.5 15.5.6 9 5S-2LA-HSL916U 27.8.45 96.8 112.3 92 115.5.6 9 5S-2LA-HSL917U 28.7.48 11.8 117.3 97 12.5.6 9 5S-2LA-HSL918U 29.6.5 16.8 122.3 12 125.5.6 9 5S-2LA-HSL919U 32..69 113.8 13.6 17 135.5.6 9 5S-2LA-HSL92U 32.9.72 118.8 135.6 112 14.5.6 9 5S-2LA-HSL921U 33.8.75 123.8 14.6 117 145.5.6 9 5S-2LA-HSL922U 37.1 1.1 135.4 154.7 127 16.5.6 9 5S-2LA-HSL924U 4.4 1.32 146.9 168.9 138.5 174.5 1 9 5S-2LA-HSL926U 139

Main Spindle Beaings Eco-fiendly angula contact ball beaings (ceamic ball type) 5S-2LA-HSL9U seies Contact angle 25 d 5 13mm B 1 1 D dd1d2 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-HSL91UAD 5 72 12.6.3 1.3 5.3 1 5 545 9.75 995 41 5S-2LA-HSL911UAD 55 8 13 1.6 12.9 6.65 1 31 68 12.1 1 24 37 5S-2LA-HSL912UAD 6 85 13 1.6 13.3 7.3 1 36 74 13.3 1 36 34 5 5S-2LA-HSL913UAD 65 9 13 1.6 13.5 7.6 1 37 775 13.9 1 42 32 3 5S-2LA-HSL914UAD 7 1 16 1.6 19.7 1.8 2 1 1 1 19.9 2 3 29 4 5S-2LA-HSL915UAD 75 15 16 1.6 2.5 11.8 2 9 1 2 21.5 2 2 27 8 5S-2LA-HSL916UAD 8 11 16 1.6 2.7 12.3 2 11 1 25 22.5 2 3 26 3 5S-2LA-HSL917UAD 85 12 18 1.1.6 28.1 16.2 2 86 1 66 29.4 3 24 4 5S-2LA-HSL918UAD 9 125 18 1.1.6 29.2 17.6 2 98 1 79 31.5 3 25 23 3 5S-2LA-HSL919UAD 95 13 18 1.1.6 29.5 18.3 3 1 87 33. 3 4 22 2 5S-2LA-HSL92UAD 1 14 2 1.1.6 34.5 21.4 3 5 2 19 39. 4 2 8 5S-2LA-HSL921UAD 15 145 2 1.1.6 34.5 22.3 3 55 2 27 4.5 4 15 2 5S-2LA-HSL922UAD 11 15 2 1.1.6 35. 23.1 3 6 2 36 42. 4 3 19 2 5S-2LA-HSL924UAD 12 165 22 1.1.6 45. 29.6 4 6 3 54. 5 55 17 5 5S-2LA-HSL926UAD 13 18 24 1.5 1 55.5 36.5 5 7 3 75 67. 6 85 16 1 1 Minimum allowable value fo cone adius dimension o 1. 2 Fo the details of space dimensions, please contact NTN Engineeing. 14

Main Spindle Beaings l 1as as da Db Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Db 1as l 2 a (appox.) d1 D2 min max max min 2.3.11 57.6 66.7 54.5 69.5.3 8.5 5S-2LA-HSL91UAD 22.4.16 63.6 74.1 6.5 75.5.6 8.5 5S-2LA-HSL911UAD 23.5.17 68.6 79. 65.5 8.5.6 8.5 5S-2LA-HSL912UAD 24.7.17 73.6 84. 7.5 85.5.6 8.5 5S-2LA-HSL913UAD 28..29 8.1 93.2 75.5 95.5.6 8.5 5S-2LA-HSL914UAD 29.1.31 85.1 98.2 8.5 1.5.6 9 5S-2LA-HSL915UAD 3.3.32 9.1 13.2 85.5 15.5.6 9 5S-2LA-HSL916UAD 33.1.45 96.8 112.3 92 115.5.6 9 5S-2LA-HSL917UAD 34.2.48 11.8 117.3 97 12.5.6 9 5S-2LA-HSL918UAD 35.4.5 16.8 122.3 12 125.5.6 9 5S-2LA-HSL919UAD 38.2.69 113.8 13.6 17 135.5.6 9 5S-2LA-HSL92UAD 39.3.72 118.8 135.6 112 14.5.6 9 5S-2LA-HSL921UAD 4.5.75 123.8 14.6 117 145.5.6 9 5S-2LA-HSL922UAD 44.4 1.1 135.4 154.7 127 16.5.6 9 5S-2LA-HSL924UAD 48.4 1.32 146.9 168.8 138.5 174.5 1 9 5S-2LA-HSL926UAD 141

Main Spindle Beaings Eco-fiendly angula contact ball beaings (ceamic ball type) 5S-2LA-HSL seies Contact angle 2 d 5 13mm B 1 1 D dd1d2 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-HSL1 5 8 16 1.6 15.5 7.75 1 58 79 12.1 1 23 43 3 5S-2LA-HSL11 55 9 18 1.1.6 16.8 9.2 1 72 935 14.4 1 46 38 8 5S-2LA-HSL12 6 95 18 1.1.6 17.6 1.2 1 8 1 4 15.9 1 62 36 3 5S-2LA-HSL13 65 1 18 1.1.6 17.9 1.7 1 83 1 9 16.7 1 71 34 1 5S-2LA-HSL14 7 11 2 1.1.6 21.9 13.5 2 23 1 37 21.1 2 15 31 2 5S-2LA-HSL15 75 115 2 1.1.6 23.3 15.2 2 38 1 55 23.8 2 42 29 6 5S-2LA-HSL16 8 125 22 1.1.6 26.7 17.4 2 72 1 77 27.2 2 78 27 4 5S-2LA-HSL17 85 13 22 1.1.6 27. 18.1 2 76 1 85 28.4 2 9 26 2 5S-2LA-HSL18 9 14 24 1.5 1 31.5 21.3 3 2 2 17 33.5 3 4 24 5 5S-2LA-HSL19 95 145 24 1.5 1 31.5 22.1 3 25 2 26 34.5 3 55 23 4 5S-2LA-HSL2 1 15 24 1.5 1 33. 23.8 3 35 2 42 37.5 3 8 22 5 5S-2LA-HSL21 15 16 26 2 1 37.5 27.5 3 85 2 81 43. 4 4 21 2 5S-2LA-HSL22 11 17 28 2 1 46.5 33.5 4 75 3 4 52. 5 3 2 1 5S-2LA-HSL24 12 18 28 2 1 47. 35. 4 8 3 55 54.5 5 55 18 7 5S-2LA-HSL26 13 2 33 2 1 67.5 48. 6 9 4 9 75.5 7 7 17 1 Minimum allowable value fo cone adius dimension o 1. 2 Fo the details of space dimensions, please contact NTN Engineeing. 142

Main Spindle Beaings l 1as as da Db Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Db 1as l 2 a (appox.) d1 D2 min max max min 19.9.22 6.1 73.2 55.5 75.5.6 8.5 5S-2LA-HSL1 22.3.35 67.6 8.8 62 85.5.6 8.5 5S-2LA-HSL11 23.2.38 72.6 85.8 67 9.5.6 8.5 5S-2LA-HSL12 24.1.4 77.6 9.8 72 95.5.6 9 5S-2LA-HSL13 26.5.57 84.8 99.1 77 15.5.6 9 5S-2LA-HSL14 27.4.6 89.8 14.1 82 11.5.6 9 5S-2LA-HSL15 29.8.82 96.8 112.5 87 12.5.6 9 5S-2LA-HSL16 3.7.85 11.8 117.4 92 125.5.6 9 5S-2LA-HSL17 33.1 1.12 18.8 125.8 98.5 134.5 1 9 5S-2LA-HSL18 34. 1.17 113.8 13.8 13.5 139.5 1 9 5S-2LA-HSL19 34.9 1.22 118.8 135.8 18.5 144.5 1 9 5S-2LA-HSL2 37.3 1.55 125.8 144.1 115 154.5 1 9 5S-2LA-HSL21 39.7 1.89 132.4 153.2 12 164.5 1 9 5S-2LA-HSL22 41.5 2.3 142.4 163.2 13 174.5 1 9 5S-2LA-HSL24 46.8 2.98 155.5 181.5 14 194.5 1 9 5S-2LA-HSL26 143

Main Spindle Beaings Eco-fiendly angula contact ball beaings (ceamic ball type) 5S-2LA-HSL seies Contact angle 25 d 5 13mm B 1 1 D dd1d2 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-HSL1AD 5 8 16 1.6 15. 7.5 1 53 765 13.8 1 4 38 5 5S-2LA-HSL11AD 55 9 18 1.1.6 16.3 8.9 1 66 91 16.4 1 67 34 5 5S-2LA-HSL12AD 6 95 18 1.1.6 17.1 9.85 1 74 1 18.1 1 85 32 3 5S-2LA-HSL13AD 65 1 18 1.1.6 17.3 1.4 1 77 1 6 19. 1 94 3 3 5S-2LA-HSL14AD 7 11 2 1.1.6 21.2 13. 2 16 1 33 24. 2 44 27 8 5S-2LA-HSL15AD 75 115 2 1.1.6 22.5 14.7 2 3 1 5 27. 2 76 26 3 5S-2LA-HSL16AD 8 125 22 1.1.6 25.8 16.9 2 63 1 72 31. 3 15 24 4 5S-2LA-HSL17AD 85 13 22 1.1.6 26.1 17.6 2 66 1 79 32.5 3 3 23 3 5S-2LA-HSL18AD 9 14 24 1.5 1 3.5 2.6 3 1 2 1 38. 3 85 21 7 5S-2LA-HSL19AD 95 145 24 1.5 1 3.5 21.4 3 15 2 19 39.5 4 2 8 5S-2LA-HSL2AD 1 15 24 1.5 1 31.5 23. 3 25 2 35 42.5 4 3 2 5S-2LA-HSL21AD 15 16 26 2 1 36.5 26.7 3 7 2 72 49. 5 18 9 5S-2LA-HSL22AD 11 17 28 2 1 45. 32.5 4 6 3 3 59.5 6 5 17 7 5S-2LA-HSL24AD 12 18 28 2 1 45.5 33.5 4 65 3 45 62. 6 3 16 7 5S-2LA-HSL26AD 13 2 33 2 1 65. 46.5 6 65 4 75 85.5 8 75 15 2 1 Minimum allowable value fo cone adius dimension o 1. 2 Fo the details of space dimensions, please contact NTN Engineeing. 144

Main Spindle Beaings l 1as as da Db Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Db 1as l 2 a (appox.) d1 D2 min max max min 23.3.22 6.1 73.2 55.5 75.5.6 8.5 5S-2LA-HSL1AD 26.1.35 67.6 8.8 62 85.5.6 8.5 5S-2LA-HSL11AD 27.2.38 72.6 85.8 67 9.5.6 8.5 5S-2LA-HSL12AD 28.4.4 77.6 9.8 72 95.5.6 9 5S-2LA-HSL13AD 31.1.57 84.8 99.1 77 15.5.6 9 5S-2LA-HSL14AD 32.3.6 89.8 14.1 82 11.5.6 9 5S-2LA-HSL15AD 35.1.82 96.8 112.5 87 12.5.6 9 5S-2LA-HSL16AD 36.2.85 11.8 117.4 92 125.5.6 9 5S-2LA-HSL17AD 39. 1.12 18.8 125.8 98.5 134.5 1 9 5S-2LA-HSL18AD 4.2 1.17 113.8 13.8 13.5 139.5 1 9 5S-2LA-HSL19AD 41.3 1.22 118.8 135.8 18.5 144.5 1 9 5S-2LA-HSL2AD 44.1 1.55 125.8 144.1 115 154.5 1 9 5S-2LA-HSL21AD 46.9 1.89 132.4 153.2 12 164.5 1 9 5S-2LA-HSL22AD 49.2 2.3 142.4 163.2 13 174.5 1 9 5S-2LA-HSL24AD 55.3 2.98 155.5 181.5 14 194.5 1 9 5S-2LA-HSL26AD 145

Main Spindle Beaings Eco-fiendly angula contact ball beaings (ceamic ball type) 5S-2LA-HSFL seies Contact angle 25 d 5 1mm B 1 1 D d d1 D2 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-HSFL1AD 5 8 16 1.6 1.1 6.2 1 3 635 11.4 1 17 5 5S-2LA-HSFL11AD 55 9 18 1.1.6 12.6 7.8 1 28 8 14.4 1 47 44 8 5S-2LA-HSFL12AD 6 95 18 1.1.6 12.9 8.45 1 32 86 15.5 1 58 41 9 5S-2LA-HSFL13AD 65 1 18 1.1.6 13.3 9.5 1 36 925 16.7 1 7 39 4 5S-2LA-HSFL14AD 7 11 2 1.1.6 16.2 11.1 1 65 1 13 2.4 2 8 36 1 5S-2LA-HSFL15AD 75 115 2 1.1.6 16.7 11.9 1 7 1 21 21.8 2 22 34 2 5S-2LA-HSFL16AD 8 125 22 1.1.6 19.9 14.2 2 3 1 44 26. 2 66 31 7 5S-2LA-HSFL17AD 85 13 22 1.1.6 2.1 14.7 2 5 1 5 27. 2 75 3 2 5S-2LA-HSFL18AD 9 14 24 1.5 1 24.5 18.2 2 5 1 86 33.5 3 4 28 3 5S-2LA-HSFL19AD 95 145 24 1.5 1 24.7 18.8 2 52 1 92 34.5 3 55 27 1 5S-2LA-HSFL2AD 1 15 24 1.5 1 25.3 2. 2 58 2 4 37. 3 75 26 1 Minimum allowable value fo cone adius dimension o 1. 2 Fo the details of space dimensions, please contact NTN Engineeing. 146

Main Spindle Beaings l 1as as da Db Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Db 1as l 2 a (appox.) d1 D2 min max max min 23.3.27 61.6 7.9 55.5 75.5.6 8.5 5S-2LA-HSFL1AD 26..4 68.6 79.2 62 85.5.6 8.5 5S-2LA-HSFL11AD 27.2.43 73.6 84.2 67 9.5.6 8.5 5S-2LA-HSFL12AD 28.3.46 78.6 89.2 72 95.5.6 9 5S-2LA-HSFL13AD 31.1.64 85.6 97.5 77 15.5.6 9 5S-2LA-HSFL14AD 32.3.68 9.6 12.5 82 11.5.6 9 5S-2LA-HSFL15AD 35..91 97.6 11.8 87 12.5.6 9 5S-2LA-HSFL16AD 36.2.95 12.6 115.8 92 125.5.6 9 5S-2LA-HSFL17AD 39. 1.25 19.8 124.2 98.5 134.5 1 9 5S-2LA-HSFL18AD 4.1 1.3 114.8 129.2 13.5 139.5 1 9 5S-2LA-HSFL19AD 41.3 1.36 119.8 134.2 18.5 144.5 1 9 5S-2LA-HSFL2AD 147

Main Spindle Beaings Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing 5S-2LA-HSEW9U type Contact angle 2 d 5 1mm 1 B 1 Sn Sb Gb Bn Gb Bn D D1 d2 d d1 D2 Enlaged view a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B Bn Sn Sb Gb s min 1 1s min 1 C Co C Co (Static) lubication 5S-2LA-HSEW91U 5 72 12 2.2 6.6 1.2 1.3.6.3 1.7 5.5 1 9 56 8.55 875 46 1 5S-2LA-HSEW911U 55 8 13 2.8 7.2 1.2 1.3 1.6 13.3 6.85 1 36 7 1.6 1 9 41 7 5S-2LA-HSEW912U 6 85 13 2.8 7.2 1.2 1.3 1.6 13.8 7.5 1 41 765 11.6 1 19 38 8 5S-2LA-HSEW913U 65 9 13 2.8 7.2 1.2 1.3 1.6 13.9 7.85 1 42 8 12.2 1 25 36 3 5S-2LA-HSEW914U 7 1 16 3.1 9.3 1.4 1.9 1.6 2.4 11.2 2 8 1 14 17.4 1 78 33 1 5S-2LA-HSEW915U 75 15 16 3.1 9.3 1.4 1.9 1.6 21.2 12.2 2 16 1 24 19. 1 94 31 3 5S-2LA-HSEW916U 8 11 16 3.1 9.3 1.4 1.9 1.6 21.4 12.7 2 19 1 29 19.8 2 2 29 6 5S-2LA-HSEW917U 85 12 18 4 1.4 1.6 1.9 1.1.6 29.1 16.8 2 96 1 71 26.1 2 67 27 4 5S-2LA-HSEW918U 9 125 18 4 1.4 1.6 1.9 1.1.6 3. 18.1 3 1 1 85 28.3 2 89 26 2 5S-2LA-HSEW919U 95 13 18 4 1.4 1.6 1.9 1.1.6 3.5 18.9 3 1 1 93 29.4 3 25 5S-2LA-HSEW92U 1 14 2 4 12 1.6 1.9 1.1.6 35.5 22.1 3 6 2 26 34. 3 5 23 4 1 Minimum allowable value fo cone adius dimension o 1. 148

Main Spindle Beaings 1as as Back-to-back (DB) da Db db Da as 1as Face-to-face (DF) Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 17.2 6..12 57.6 56.6 64.4 66.8 54.5 52.5 67.5 69.5.6.3 18.9 7.7.17 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 19.8 8.3.18 68.6 67.4 76.4 79.1 65.5 64.5 79.5 8.5 1.6 2.7 8.9.19 73.6 72.4 81.4 84. 7.5 69.5 84.5 85.5 1.6 23.6 14.31 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 24.5 15.33 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 25.4 16.34 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 27.8 22.48 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 28.7 23.51 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 29.6 24.53 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 32. 32.74 113.8 111.7 126.2 13.6 17 14.5 133 135.5 1.6 149

Main Spindle Beaings Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing 5S-2LA-HSEW9U type Contact angle 25 d 5 1mm 1 B 1 Sn Sb Gb Bn Gb Bn D D1 d2 d d1 D2 Enlaged view a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B Bn Sn Sb Gb s min 1 1s min 1 C Co C Co (Static) lubication 5S-2LA-HSEW91UAD 5 72 12 2.2 6.6 1.2 1.3.6.3 1.3 5.3 1 5 545 9.75 995 41 5S-2LA-HSEW911UAD 55 8 13 2.8 7.2 1.2 1.3 1.6 12.9 6.65 1 31 68 12.1 1 24 37 5S-2LA-HSEW912UAD 6 85 13 2.8 7.2 1.2 1.3 1.6 13.3 7.3 1 36 74 13.3 1 36 34 5 5S-2LA-HSEW913UAD 65 9 13 2.8 7.2 1.2 1.3 1.6 13.5 7.6 1 37 775 13.9 1 42 32 3 5S-2LA-HSEW914UAD 7 1 16 3.1 9.3 1.4 1.9 1.6 19.7 1.8 2 1 1 1 19.9 2 3 29 4 5S-2LA-HSEW915UAD 75 15 16 3.1 9.3 1.4 1.9 1.6 2.5 11.8 2 9 1 2 21.5 2 2 27 8 5S-2LA-HSEW916UAD 8 11 16 3.1 9.3 1.4 1.9 1.6 2.7 12.3 2 11 1 25 22.5 2 3 26 3 5S-2LA-HSEW917UAD 85 12 18 4 1.4 1.6 1.9 1.1.6 28.1 16.2 2 86 1 66 29.4 3 24 4 5S-2LA-HSEW918UAD 9 125 18 4 1.4 1.6 1.9 1.1.6 29.2 17.6 2 98 1 79 31.5 3 25 23 3 5S-2LA-HSEW919UAD 95 13 18 4 1.4 1.6 1.9 1.1.6 29.5 18.3 3 1 87 33. 3 4 22 2 5S-2LA-HSEW92UAD 1 14 2 4 12 1.6 1.9 1.1.6 34.5 21.4 3 5 2 19 39. 4 2 8 1 Minimum allowable value fo cone adius dimension o 1. 15

Main Spindle Beaings 1as as Back-to-back (DB) da Db db Da as 1as Face-to-face (DF) Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 2.3 6..12 57.6 56.6 64.4 66.7 54.5 52.5 67.5 69.5.6.3 22.4 7.7.17 63.6 62.4 71.4 74.1 6.5 59.5 74.5 75.5 1.6 23.5 8.3.18 68.6 67.4 76.4 79. 65.5 64.5 79.5 8.5 1.6 24.7 8.9.19 73.6 72.4 81.4 84. 7.5 69.5 84.5 85.5 1.6 28. 14.31 8.1 78.6 89.8 93.2 75.5 74.5 94.5 95.5 1.6 29.1 15.33 85.1 83.6 94.8 98.2 8.5 79.5 99.5 1.5 1.6 3.3 16.34 9.1 88.6 99.8 13.2 85.5 84.5 14.5 15.5 1.6 33.1 22.48 96.8 94.9 18.2 112.3 92 89.5 113 115.5 1.6 34.2 23.51 11.8 99.9 113.2 117.3 97 94.5 118 12.5 1.6 35.4 24.53 16.8 14.9 118.2 122.3 12 99.5 123 125.5 1.6 38.2 32.74 113.8 111.7 126.2 13.6 17 14.5 133 135.5 1.6 151

Main Spindle Beaings Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing 5S-2LA-HSEW type Contact angle 2 d 5 1mm 1 B 1 Sn Sb Gb Bn Gb Bn D D1 d2 d d1 D2 Enlaged view a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B Bn Sn Sb Gb s min 1 1s min 1 C Co C Co (Static) lubication 5S-2LA-HSEW1 5 8 16 3.4 9.3 1.4 1.9 1.6 15.5 7.75 1 58 79 12.1 1 23 43 3 5S-2LA-HSEW11 55 9 18 4.3 9.7 1.4 1.9 1.1.6 16.8 9.2 1 72 935 14.4 1 46 38 8 5S-2LA-HSEW12 6 95 18 4.3 9.7 1.4 1.9 1.1.6 17.6 1.2 1 8 1 4 15.9 1 62 36 3 5S-2LA-HSEW13 65 1 18 4 1.4 1.6 1.9 1.1.6 17.9 1.7 1 83 1 9 16.7 1 71 34 1 5S-2LA-HSEW14 7 11 2 4 11.6 1.6 1.9 1.1.6 21.9 13.5 2 23 1 37 21.1 2 15 31 2 5S-2LA-HSEW15 75 115 2 4 11.6 1.6 2.4 1.1.6 23.3 15.2 2 38 1 55 23.8 2 42 29 6 5S-2LA-HSEW16 8 125 22 4.7 12.2 1.6 2.4 1.1.6 26.7 17.4 2 72 1 77 27.2 2 78 27 4 5S-2LA-HSEW17 85 13 22 4.7 12.2 1.6 2.4 1.1.6 27. 18.1 2 76 1 85 28.4 2 9 26 2 5S-2LA-HSEW18 9 14 24 5.5 14.5 1.6 1.9 1.5 1 31.5 21.3 3 2 2 17 33.5 3 4 24 5 5S-2LA-HSEW19 95 145 24 5.5 14.5 1.6 2.4 1.5 1 31.5 22.1 3 25 2 26 34.5 3 55 23 4 5S-2LA-HSEW2 1 15 24 5.5 14.5 1.6 1.9 1.5 1 33. 23.8 3 35 2 42 37.5 3 8 22 5 1 Minimum allowable value fo cone adius dimension o 1. 152

Main Spindle Beaings 1as as Back-to-back (DB) da Db db Da as 1as Face-to-face (DF) Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 19.9 12.23 6.1 58.6 69.9 73.2 55.5 54.5 74.5 75.5 1.6 22.3 16.37 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 23.2 17.4 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 24.1 18.42 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 26.5 24.6 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 27.4 25.64 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 29.8 34.86 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 3.7 35.9 11.8 99.9 113.2 117.4 92 89.5 123 125.5 1.6 33.1 45 1.18 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 34. 47 1.23 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 34.9 49 1.28 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 153

Main Spindle Beaings Ai-oil lubicated high-speed angula ball beaings with e-lubicating hole on the oute ing 5S-2LA-HSEW type Contact angle 25 d 5 1mm 1 B 1 Sn Sb Gb Bn Gb Bn D D1 d2 d d1 D2 Enlaged view a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 oil d D B Bn Sn Sb Gb s min 1 1s min 1 C Co C Co (Static) lubication 5S-2LA-HSEW1AD 5 8 16 3.4 9.3 1.4 1.9 1.6 15. 7.5 1 53 765 13.8 1 4 38 5 5S-2LA-HSEW11AD 55 9 18 4.3 9.7 1.4 1.9 1.1.6 16.3 8.9 1 66 91 16.4 1 67 34 5 5S-2LA-HSEW12AD 6 95 18 4.3 9.7 1.4 1.9 1.1.6 17.1 9.85 1 74 1 18.1 1 85 32 3 5S-2LA-HSEW13AD 65 1 18 4 1.4 1.6 1.9 1.1.6 17.3 1.4 1 77 1 6 19. 1 94 3 3 5S-2LA-HSEW14AD 7 11 2 4 11.6 1.6 1.9 1.1.6 21.2 13. 2 16 1 33 24. 2 44 27 8 5S-2LA-HSEW15AD 75 115 2 4 11.6 1.6 2.4 1.1.6 22.5 14.7 2 3 1 5 27. 2 76 26 3 5S-2LA-HSEW16AD 8 125 22 4.7 12.2 1.6 2.4 1.1.6 25.8 16.9 2 63 1 72 31. 3 15 24 4 5S-2LA-HSEW17AD 85 13 22 4.7 12.2 1.6 2.4 1.1.6 26.1 17.6 2 66 1 79 32.5 3 3 23 3 5S-2LA-HSEW18AD 9 14 24 5.5 14.5 1.6 1.9 1.5 1 3.5 2.6 3 1 2 1 38. 3 85 21 7 5S-2LA-HSEW19AD 95 145 24 5.5 14.5 1.6 2.4 1.5 1 3.5 21.4 3 15 2 19 39.5 4 2 8 5S-2LA-HSEW2AD 1 15 24 5.5 14.5 1.6 1.9 1.5 1 31.5 23. 3 25 2 35 42.5 4 3 2 1 Minimum allowable value fo cone adius dimension o 1. 154

Main Spindle Beaings 1as as Back-to-back (DB) da Db db Da as 1as Face-to-face (DF) Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions cente fee space mm cm 3 kg mm mm Single-ow Single-ow da db Da Db as 1as a (appox.) (appox.) d1 d2 D1 D2 min min max max max max 23.3 12.23 6.1 58.6 69.9 73.2 55.5 54.5 74.5 75.5 1.6 26.1 16.37 67.6 66.2 77.4 8.8 62 59.5 83 85.5 1.6 27.2 17.4 72.6 71.2 82.4 85.8 67 64.5 88 9.5 1.6 28.4 18.4 77.6 76.2 87.4 9.8 72 69.5 93 95.5 1.6 31.1 24.6 84.8 83. 95.2 99.1 77 74.5 13 15.5 1.6 32.3 25.64 89.8 88. 1.2 14.1 82 79.5 18 11.5 1.6 35.1 34.86 96.8 94.9 18.2 112.5 87 84.5 118 12.5 1.6 36.2 35.9 11.8 99.9 113.2 117.4 92 89.5 123 125.5 1.6 39. 45 1.18 18.8 16.7 121.2 125.8 98.5 95.5 131.5 134.5 1.5 1 4.2 47 1.23 113.8 111.7 126.2 13.8 13.5 1.5 136.5 139.5 1.5 1 41.3 49 1.28 118.8 116.7 131.2 135.8 18.5 15.5 141.5 144.5 1.5 1 155

Main Spindle Beaings Sealed standad angula contact ball beaings (steel ball type) 79 LLB seies Contact angle 15 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 79CDLLB 1 22 6.3.15 3. 1.52 35 155 1.91 194 14.1 75 7 791CDLLB 12 24 6.3.15 3.35 1.86 34 189 2.34 239 14.7 67 3 792CDLLB 15 28 7.3.15 5.5 2.86 515 292 3.6 37 14.5 56 3 793CDLLB 17 3 7.3.15 5.25 3.15 535 32 4. 45 14.8 51 5 794CDLLB 2 37 9.3.15 7.3 4.55 745 465 5.75 59 14.9 42 5 795CDLLB 25 42 9.3.15 8.15 5.75 835 585 7.3 745 15.5 36 1 796CDLLB 3 47 9.3.15 8.6 6.6 88 675 8.4 86 15.9 31 4 797CDLLB 35 55 1.6.3 11.8 9.5 1 2 97 12.1 1 23 15.9 26 9 798CDLLB 4 62 12.6.3 17.6 13.8 1 79 1 4 17.5 1 78 15.5 23 7 799CDLLB 45 68 12.6.3 18.6 15.6 1 89 1 59 19.8 2 2 15.8 21 4 791CDLLB 5 72 12.6.3 15.9 14.7 1 62 1 49 18.6 1 9 16.4 2 1 Minimum allowable value fo cone adius dimension o 1. 156

Main Spindle Beaings 1as as dadb as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 5.2.1 12.9 19.7 12.5 19.7 2.8.3.15 79CDLLB 5.4.12 15.2 21.7 14.5 21.7 22.8.3.15 791CDLLB 6.4.17 18.5 26. 17.5 26. 26.8.3.15 792CDLLB 6.7.19 2.2 28. 19.5 28. 28.8.3.15 793CDLLB 8.4.39 23.9 33.9 22.5 34.5 35.8.3.15 794CDLLB 9..46 29.1 38.9 27.5 39.5 4.8.3.15 795CDLLB 9.7.53 34.6 43.9 32.5 44.5 45.8.3.15 796CDLLB 11.1.81 4.2 51.2 39.5 51.2 52.5.6.3 797CDLLB 12.9.11 45.3 58.8 44.5 58.8 59.5.6.3 798CDLLB 13.6.13 5.8 64.3 49.5 64.3 65.5.6.3 799CDLLB 14.2.14 55.2 67.5 54.5 67.5 69.5.6.3 791CDLLB 157

Main Spindle Beaings Sealed standad angula contact ball beaings (steel ball type) 79 LLB seies Contact angle 25 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 79ADLLB 1 22 6.3.15 2.88 1.45 294 148 2.2 225 65 6 791ADLLB 12 24 6.3.15 3.2 1.77 325 181 2.61 267 58 3 792ADLLB 15 28 7.3.15 4.8 2.74 49 279 4.4 45 48 8 793ADLLB 17 3 7.3.15 5. 3. 51 35 4.75 485 44 7 794ADLLB 2 37 9.3.15 6.95 4.35 71 445 6.35 645 36 8 795ADLLB 25 42 9.3.15 7.75 5.5 79 56 7.75 79 31 3 796ADLLB 3 47 9.3.15 8.15 6.3 83 64 8.65 885 27 3 797ADLLB 35 55 1.6.3 11.1 9. 1 13 92 13.1 1 34 23 3 798ADLLB 4 62 12.6.3 16.7 13.1 1 7 1 33 19.3 1 96 2 6 799ADLLB 45 68 12.6.3 17.6 14.8 1 79 1 51 21.5 2 19 18 6 791ADLLB 5 72 12.6.3 15. 13.9 1 53 1 42 13.6 1 38 17 4 1 Minimum allowable value fo cone adius dimension o 1. 158

Main Spindle Beaings 1as as as dadb as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 6.8.1 12.9 19.7 12.5 19.7 2.8.3.15 79ADLLB 7.2.12 15.2 21.7 14.5 21.7 22.8.3.15 791ADLLB 8.6.17 18.5 26. 17.5 26. 26.8.3.15 792ADLLB 9..19 2.2 28. 19.5 28. 28.8.3.15 793ADLLB 11.2.39 23.9 33.9 22.5 34.5 35.8.3.15 794ADLLB 12.4.46 29.1 38.9 27.5 39.5 4.8.3.15 795ADLLB 13.5.53 34.6 43.9 32.5 44.5 45.8.3.15 796ADLLB 15.6.81 4.2 51.2 39.5 51.2 52.5.6.3 797ADLLB 18..11 45.3 58.8 44.5 58.8 59.5.6.3 798ADLLB 19.3.13 5.8 64.3 49.5 64.3 65.5.6.3 799ADLLB 2.2.14 55.2 67.5 54.5 67.5 69.5.6.3 791ADLLB 159

Main Spindle Beaings Sealed standad angula contact ball beaings (steel ball type) 7 LLB seies Contact angle 15 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 7CDLLB 1 26 8.3.15 5.3 2.49 54 254 3.1 315 12.6 67 3 71CDLLB 12 28 8.3.15 5.8 2.9 59 296 3.65 37 13.2 6 6 72CDLLB 15 32 9.3.15 6.25 3.4 635 345 4.25 435 14. 51 5 73CDLLB 17 35 1.3.15 8.25 4.5 84 46 5.7 58 13.8 46 6 74CDLLB 2 42 12.6.3 1.5 6. 1 7 61 7.55 77 14. 39 1 75CDLLB 25 47 12.6.3 12.3 8. 1 25 815 1.1 1 3 14.7 33 6 76CDLLB 3 55 13 1.6 15.1 1.3 1 54 1 5 13. 1 32 14.9 28 5 77CDLLB 35 62 14 1.6 19.1 13.7 1 95 1 39 17.3 1 76 15. 25 78CDLLB 4 68 15 1.6 2.6 15.9 2 1 1 62 2.1 2 5 15.4 22 4 79CDLLB 45 75 16 1.6 27.7 21.1 2 82 2 16 26.7 2 73 15.1 2 2 71CDLLB 5 8 16 1.6 28.6 22.9 2 91 2 33 29. 2 96 15.4 18 6 1 Minimum allowable value fo cone adius dimension o 1. 16

Main Spindle Beaings 1as as dadb as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 6.4.18 14.5 23.4 12.5 23.5 24.8.3.15 7CDLLB 6.7.22 16.5 25.4 14.5 25.5 26.8.3.15 71CDLLB 7.7.32 19.5 28.8 17.5 29.5 3.8.3.15 72CDLLB 8.5.4 21.6 32.2 19.5 32.5 33.8.3.15 73CDLLB 1.2.7 26. 38. 24.5 38. 39.5.6.3 74CDLLB 1.9.83 3.4 43.1 29.5 43.1 44.5.6.3 75CDLLB 12.2.11 36.4 5.4 35.5 5.4 5.5 1.6 76CDLLB 13.6.16 41.9 57.2 4.5 57.2 57.5 1.6 77CDLLB 14.8.19 47.9 62.7 45.5 62.7 63.5 1.6 78CDLLB 16.1.24 53. 7.3 5.5 7.3 7.5 1.6 79CDLLB 16.8.26 58. 75.3 55.5 75.3 75.5 1.6 71CDLLB 161

Main Spindle Beaings Sealed standad angula contact ball beaings (steel ball type) 7 LLB seies Contact angle 25 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 7ADLLB 1 26 8.3.15 5.15 2.41 525 245 3.85 395 58 3 71ADLLB 12 28 8.3.15 5.6 2.79 57 285 4.5 455 52 5 72ADLLB 15 32 9.3.15 5.95 3.25 61 33 4.95 55 44 7 73ADLLB 17 35 1.3.15 7.9 4.35 85 445 6.95 71 4 4 74ADLLB 2 42 12.6.3 1. 5.75 1 2 585 8.8 9 33 9 75ADLLB 25 47 12.6.3 11.7 7.65 1 19 78 11.3 1 15 29 2 76ADLLB 3 55 13 1.6 14.4 9.8 1 47 995 14.9 1 52 24 7 77ADLLB 35 62 14 1.6 18.2 13. 1 85 1 33 2.4 2 8 21 6 78ADLLB 4 68 15 1.6 19.5 15.1 1 99 1 54 23.2 2 37 19 4 79ADLLB 45 75 16 1.6 26.3 2.1 2 68 2 5 31. 3 15 17 5 71ADLLB 5 8 16 1.6 27.1 21.8 2 76 2 22 33. 3 35 16 2 1 Minimum allowable value fo cone adius dimension o 1. 162

Main Spindle Beaings 1as as as dadb as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 8.3.18 14.5 23.4 12.5 23.5 24.8.3.15 7ADLLB 8.7.22 16.5 25.4 14.5 25.5 26.8.3.15 71ADLLB 1..32 19.5 28.8 17.5 29.5 3.8.3.15 72ADLLB 11.1.4 21.6 32.2 19.5 32.5 33.8.3.15 73ADLLB 13.3.7 26. 38. 24.5 38. 39.5.6.3 74ADLLB 14.5.83 3.4 43.1 29.5 43.1 44.5.6.3 75ADLLB 16.5.11 36.4 5.4 35.5 5.4 5.5 1.6 76ADLLB 18.4.16 41.9 57.2 4.5 57.2 57.5 1.6 77ADLLB 2.2.19 47.9 62.7 45.5 62.7 63.5 1.6 78ADLLB 22.1.24 53. 7.3 5.5 7.3 7.5 1.6 79ADLLB 23.3.26 58. 75.3 55.5 75.3 75.5 1.6 71ADLLB 163

Main Spindle Beaings Sealed standad angula contact ball beaings (ceamic ball type) 5S-79 LLB seies Contact angle 15 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 5S-79CDLLB 1 22 6.3.15 3. 1.5 35 17 1.19 121 9.8 89 8 5S-791CDLLB 12 24 6.3.15 3.35 1.29 34 131 1.46 149 1.2 79 8 5S-792CDLLB 15 28 7.3.15 5.5 1.98 515 22 2.25 23 1. 66 8 5S-793CDLLB 17 3 7.3.15 5.25 2.19 535 223 2.49 254 1.3 61 1 5S-794CDLLB 2 37 9.3.15 7.3 3.15 745 325 3.6 365 1.3 5 4 5S-795CDLLB 25 42 9.3.15 8.15 4. 835 45 4.55 465 1.7 42 9 5S-796CDLLB 3 47 9.3.15 8.6 4.6 88 47 5.25 535 11. 37 3 5S-797CDLLB 35 55 1.6.3 11.8 6.6 1 2 67 7.55 77 11. 31 9 5S-798CDLLB 4 62 12.6.3 17.6 9.55 1 79 975 1.9 1 11 1.8 28 2 5S-799CDLLB 45 68 12.6.3 18.6 1.8 1 89 1 1 12.4 1 26 11. 24 1 5S-791CDLLB 5 72 12.6.3 15.9 1.2 1 62 1 4 11.7 1 19 11.3 22 5 1 Minimum allowable value fo cone adius dimension o 1. 164

Main Spindle Beaings 1as as dadb as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 5.2.9 12.9 19.7 12.5 19.7 2.8.3.15 5S-79CDLLB 5.4.11 15.2 21.7 14.5 21.7 22.8.3.15 5S-791CDLLB 6.4.15 18.5 26. 17.5 26. 26.8.3.15 5S-792CDLLB 6.7.17 2.2 28. 19.5 28. 28.8.3.15 5S-793CDLLB 8.4.36 23.9 33.9 22.5 34.5 35.8.3.15 5S-794CDLLB 9..42 29.1 38.9 27.5 39.5 4.8.3.15 5S-795CDLLB 9.7.48 34.6 43.9 32.5 44.5 45.8.3.15 5S-796CDLLB 11.1.73 4.2 51.2 39.5 51.2 52.5.6.3 5S-797CDLLB 12.9.99 45.3 58.8 44.5 58.8 59.5.6.3 5S-798CDLLB 13.6.12 5.8 64.3 49.5 64.3 65.5.6.3 5S-799CDLLB 14.2.12 55.2 67.5 54.5 67.5 69.5.6.3 5S-791CDLLB 165

Main Spindle Beaings Sealed standad angula contact ball beaings (ceamic ball type) 5S-79 LLB seies Contact angle 25 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 5S-79ADLLB 1 22 6.3.15 2.88 1.1 294 13 1.52 155 79 7 5S-791ADLLB 12 24 6.3.15 3.2 1.23 325 125 1.86 189 7 8 5S-792ADLLB 15 28 7.3.15 4.8 1.9 49 193 2.86 292 59 3 5S-793ADLLB 17 3 7.3.15 5. 2.9 51 213 3.15 32 54 3 5S-794ADLLB 2 37 9.3.15 6.95 3. 71 31 4.55 465 44 7 5S-795ADLLB 25 42 9.3.15 7.75 3.8 79 385 5.75 585 38 1 5S-796ADLLB 3 47 9.3.15 8.15 4.35 83 445 6.6 67 33 1 5S-797ADLLB 35 55 1.6.3 11.1 6.25 1 13 635 9.45 965 28 3 5S-798ADLLB 4 62 12.6.3 16.7 9.5 1 7 925 13.7 1 4 25 5S-799ADLLB 45 68 12.6.3 17.6 1.3 1 79 1 5 15.6 1 59 21 4 5S-791ADLLB 5 72 12.6.3 15. 9.6 1 53 98 14.6 1 49 2 1 Minimum allowable value fo cone adius dimension o 1. 166

Main Spindle Beaings 1as as as dadb as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 6.8.9 12.9 19.7 12.5 19.7 2.8.3.15 5S-79ADLLB 7.2.11 15.2 21.7 14.5 21.7 22.8.3.15 5S-791ADLLB 8.6.15 18.5 26. 17.5 26. 26.8.3.15 5S-792ADLLB 9..17 2.2 28. 19.5 28. 28.8.3.15 5S-793ADLLB 11.2.36 23.9 33.9 22.5 34.5 35.8.3.15 5S-794ADLLB 12.4.42 29.1 38.9 27.5 39.5 4.8.3.15 5S-795ADLLB 13.5.48 34.6 43.9 32.5 44.5 45.8.3.15 5S-796ADLLB 15.6.73 4.2 51.2 39.5 51.2 52.5.6.3 5S-797ADLLB 18..99 45.3 58.8 44.5 58.8 59.5.6.3 5S-798ADLLB 19.3.12 5.8 64.3 49.5 64.3 65.5.6.3 5S-799ADLLB 2.2.12 55.2 67.5 54.5 67.5 69.5.6.3 5S-791ADLLB 167

Main Spindle Beaings Sealed standad angula contact ball beaings (ceamic ball type) 5S-7 LLB seies Contact angle 15 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 5S-7CDLLB 1 26 8.3.15 5.3 1.73 54 176 1.93 197 8.8 8 6 5S-71CDLLB 12 28 8.3.15 5.8 2.1 59 25 2.26 231 9.2 72 6 5S-72CDLLB 15 32 9.3.15 6.25 2.35 635 239 2.66 271 9.7 61 8 5S-73CDLLB 17 35 1.3.15 8.25 3.15 84 32 3.55 36 9.6 55 8 5S-74CDLLB 2 42 12.6.3 1.5 4.15 1 7 425 4.7 48 9.7 46 8 5S-75CDLLB 25 47 12.6.3 12.3 5.55 1 25 565 6.3 64 1.2 4 3 5S-76CDLLB 3 55 13 1.6 15.1 7.1 1 54 725 8.1 825 1.3 34 1 5S-77CDLLB 35 62 14 1.6 19.1 9.45 1 95 965 1.8 1 1 1.4 29 9 5S-78CDLLB 4 68 15 1.6 2.6 11. 2 1 1 12 12.6 1 28 1.6 26 9 5S-79CDLLB 45 75 16 1.6 27.7 14.6 2 82 1 49 16.7 1 7 1.4 23 3 5S-71CDLLB 5 8 16 1.6 28.6 15.9 2 91 1 62 18.1 1 85 1.6 21 5 1 Minimum allowable value fo cone adius dimension o 1. 168

Main Spindle Beaings 1as as dadb as as da Da Dynamic equivalent adial load PXFYFa ifofa Co e.178.38.357.4.714.43 1.7.46 1.43.47 2.14.5 3.57.55 5.35.56 7.14.56 Single ow / Tandem FaFe FaFe X Y 1.44 Back-to-back / Face-to-face FaFe FaFe X Y X Y X Y 1.47 1.4 1.3 1.23 1.19 1.12 1.2 1 1 1 1.65 1.57 1.46 1.38 1.34.72 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.46 1.92 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 6.4.14 14.5 23.4 12.5 23.5 24.8.3.15 5S-7CDLLB 6.7.2 16.5 25.4 14.5 25.5 26.8.3.15 5S-71CDLLB 7.7.29 19.5 28.8 17.5 29.5 3.8.3.15 5S-72CDLLB 8.5.35 21.6 32.2 19.5 32.5 33.8.3.15 5S-73CDLLB 1.2.64 26. 38. 24.5 38. 39.5.6.3 5S-74CDLLB 1.9.75 3.4 43.1 29.5 43.1 44.5.6.3 5S-75CDLLB 12.2.96 36.4 5.4 35.5 5.4 5.5 1.6 5S-76CDLLB 13.6.14 41.9 57.2 4.5 57.2 57.5 1.6 5S-77CDLLB 14.8.17 47.9 62.7 45.5 62.7 63.5 1.6 5S-78CDLLB 16.1.21 53. 7.3 5.5 7.3 7.5 1.6 5S-79CDLLB 16.8.23 58. 75.3 55.5 75.3 75.5 1.6 5S-71CDLLB 169

Main Spindle Beaings Sealed standad angula contact ball beaings (ceamic ball type) 5S-7 LLB seies Contact angle 25 d 1 5mm B 1 D D1 dd1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 5S-7ADLLB 1 26 8.3.15 5.15 1.67 525 17 2.51 256 7 6 5S-71ADLLB 12 28 8.3.15 5.6 1.93 57 197 2.92 297 63 5 5S-72ADLLB 15 32 9.3.15 5.95 2.25 61 229 3.4 345 54 5S-73ADLLB 17 35 1.3.15 7.9 3. 85 35 4.55 465 48 8 5S-74ADLLB 2 42 12.6.3 1. 4. 1 2 45 6. 615 41 5S-75ADLLB 25 47 12.6.3 11.7 5.3 1 19 54 8. 815 35 3 5S-76ADLLB 3 55 13 1.6 14.4 6.8 1 47 69 1.2 1 4 29 9 5S-77ADLLB 35 62 14 1.6 18.2 9. 1 85 92 13.6 1 39 26 2 5S-78ADLLB 4 68 15 1.6 19.5 1.5 1 99 1 7 15.8 1 62 23 5 5S-79ADLLB 45 75 16 1.6 26.3 14. 2 68 1 42 21.1 2 15 2 3 5S-71ADLLB 5 8 16 1.6 27.1 15.1 2 76 1 54 22.8 2 33 18 8 1 Minimum allowable value fo cone adius dimension o 1. 17

Main Spindle Beaings 1as as as dadb as da Da Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence Abutment and fillet dimensions Pat cente dimensions numbe mm kg mm mm Single-ow da Da Db as 1as a (appox.) d1 D1 min max max max max 8.3.14 14.5 23.4 12.5 23.5 24.8.3.15 5S-7ADLLB 8.7.2 16.5 25.4 14.5 25.5 26.8.3.15 5S-71ADLLB 1..29 19.5 28.8 17.5 29.5 3.8.3.15 5S-72ADLLB 11.1.35 21.6 32.2 19.5 32.5 33.8.3.15 5S-73ADLLB 13.3.64 26. 38. 24.5 38. 39.5.6.3 5S-74ADLLB 14.5.75 3.4 43.1 29.5 43.1 44.5.6.3 5S-75ADLLB 16.5.96 36.4 5.4 35.5 5.4 5.5 1.6 5S-76ADLLB 18.4.14 41.9 57.2 4.5 57.2 57.5 1.6 5S-77ADLLB 2.2.17 47.9 62.7 45.5 62.7 63.5 1.6 5S-78ADLLB 22.1.21 53. 7.3 5.5 7.3 7.5 1.6 5S-79ADLLB 23.3.23 58. 75.3 55.5 75.3 75.5 1.6 5S-71ADLLB 171

Main Spindle Beaings Sealed high-speed angula contact ball beaings (steel ball type) 2LA-BNS9 LLB seies Contact angle 15 d 5 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 2LA-BNS91CLLB 5 72 12.6.3 8.1 7.3 825 745 1.7 1 9 11.1 21 8 2LA-BNS911CLLB 55 8 13 1.6 1.3 9.2 1 5 94 13.5 1 38 11. 19 7 2LA-BNS912CLLB 6 85 13 1.6 1.6 1. 1 8 1 1 14.6 1 49 11.1 18 3 2LA-BNS913CLLB 65 9 13 1.6 1.9 1.7 1 11 1 9 15.7 1 6 11.2 17 2 2LA-BNS914CLLB 7 1 16 1.6 13.7 13.5 1 4 1 37 19.8 2 2 11.1 15 6 2LA-BNS915CLLB 75 15 16 1.6 14.1 14.4 1 44 1 47 21.2 2 17 11.2 14 8 2LA-BNS916CLLB 8 11 16 1.6 14.5 15.4 1 48 1 57 22.6 2 31 11.3 14 2LA-BNS917CLLB 85 12 18 1.1.6 17.4 18.3 1 77 1 86 26.9 2 74 11.2 13 2LA-BNS918CLLB 9 125 18 1.1.6 17.9 19.5 1 82 1 98 28.7 2 92 11.3 12 4 2LA-BNS919CLLB 95 13 18 1.1.6 18.3 2.6 1 87 2 11 3.5 3 1 11.3 11 8 2LA-BNS92CLLB 1 14 2 1.1.6 25.7 28. 2 62 2 85 41. 4 2 11.2 11 1 1 Minimum allowable value fo cone adius dimension o 1. 172

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 14.2.14 56.9 56. 65. 54.5 52.5 67.5.6.3 2LA-BNS91CLLB 15.6.19 62.6 61.7 72.1 6.5 59.5 74.5 1.6 2LA-BNS911CLLB 16.3.21 67.6 66.7 77.1 65.5 64.5 79.5 1.6 2LA-BNS912CLLB 16.9.22 72.6 71.7 82.1 7.5 69.5 84.5 1.6 2LA-BNS913CLLB 19.5.38 79.2 78.3 9.2 75.5 74.5 94.5 1.6 2LA-BNS914CLLB 2.1.39 84.2 83.3 95.2 8.5 79.5 99.5 1.6 2LA-BNS915CLLB 2.8.41 89.2 88.3 1.2 85.5 84.5 14.5 1.6 2LA-BNS916CLLB 22.8.59 96. 95. 18.6 92 89.5 113 1.6 2LA-BNS917CLLB 23.5.62 1.9 1. 113.6 97 94.5 118 1.6 2LA-BNS918CLLB 24.2.65 15.9 15. 118.6 12 99.5 123 1.6 2LA-BNS919CLLB 26.2.87 111.9 11.9 127.3 17 14.5 133 1.6 2LA-BNS92CLLB 173

Main Spindle Beaings Sealed high-speed angula contact ball beaings (steel ball type) 2LA-BNS9 LLB seies Contact angle 2 d 5 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 2LA-BNS91LLB 5 72 12.6.3 7.9 7.1 85 725 11.9 1 22 23 1 2LA-BNS911LLB 55 8 13 1.6 1.1 9. 1 3 915 15.1 1 54 2 8 2LA-BNS912LLB 6 85 13 1.6 1.4 9.7 1 6 99 16.3 1 66 19 4 2LA-BNS913LLB 65 9 13 1.6 1.6 1.4 1 8 1 6 17.5 1 79 18 2 2LA-BNS914LLB 7 1 16 1.6 13.4 13.1 1 36 1 34 22.1 2 25 16 6 2LA-BNS915LLB 75 15 16 1.6 13.7 14.1 1 4 1 43 23.6 2 41 15 6 2LA-BNS916LLB 8 11 16 1.6 14.1 15. 1 44 1 53 25.2 2 57 14 8 2LA-BNS917LLB 85 12 18 1.1.6 16.9 17.8 1 73 1 82 29.9 3 5 13 7 2LA-BNS918LLB 9 125 18 1.1.6 17.4 19. 1 77 1 93 32. 3 25 13 1 2LA-BNS919LLB 95 13 18 1.1.6 17.8 2.1 1 82 2 5 34. 3 45 12 5 2LA-BNS92LLB 1 14 2 1.1.6 25.1 27.3 2 56 2 78 46. 4 7 11 7 1 Minimum allowable value fo cone adius dimension o 1. 174

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 17.2.14 56.9 56. 65. 54.5 52.5 67.5.6.3 2LA-BNS91LLB 18.9.19 62.6 61.7 72.1 6.5 59.5 74.5 1.6 2LA-BNS911LLB 19.8.21 67.6 66.7 77.1 65.5 64.5 79.5 1.6 2LA-BNS912LLB 2.7.22 72.6 71.7 82.1 7.5 69.5 84.5 1.6 2LA-BNS913LLB 23.6.38 79.2 78.3 9.2 75.5 74.5 94.5 1.6 2LA-BNS914LLB 24.5.39 84.2 83.3 95.2 8.5 79.5 99.5 1.6 2LA-BNS915LLB 25.4.41 89.2 88.3 1.2 85.5 84.5 14.5 1.6 2LA-BNS916LLB 27.8.59 96. 95. 18.6 92 89.5 113 1.6 2LA-BNS917LLB 28.7.62 1.9 1. 113.6 97 94.5 118 1.6 2LA-BNS918LLB 29.6.65 15.9 15. 118.6 12 99.5 123 1.6 2LA-BNS919LLB 32..87 111.9 11.9 127.3 17 14.5 133 1.6 2LA-BNS92LLB 175

Main Spindle Beaings Sealed high-speed angula contact ball beaings (steel ball type) 2LA-BNS9 LLB seies Contact angle 25 d 5 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 2LA-BNS91ADLLB 5 72 12.6.3 7.6 6.9 775 7 12.4 1 27 2 5 2LA-BNS911ADLLB 55 8 13 1.6 9.75 8.7 99 885 16.8 1 71 18 5 2LA-BNS912ADLLB 6 85 13 1.6 1. 9.4 1 2 96 18.1 1 85 17 2 2LA-BNS913ADLLB 65 9 13 1.6 1.3 1.1 1 5 1 3 19.5 1 99 16 1 2LA-BNS914ADLLB 7 1 16 1.6 12.9 12.7 1 32 1 3 24.6 2 5 14 7 2LA-BNS915ADLLB 75 15 16 1.6 13.3 13.6 1 35 1 39 26.3 2 68 13 9 2LA-BNS916ADLLB 8 11 16 1.6 13.6 14.5 1 39 1 48 28. 2 86 13 2 2LA-BNS917ADLLB 85 12 18 1.1.6 16.4 17.2 1 67 1 76 33.5 3 4 12 2 2LA-BNS918ADLLB 9 125 18 1.1.6 16.8 18.4 1 71 1 87 35.5 3 6 11 6 2LA-BNS919ADLLB 95 13 18 1.1.6 17.2 19.5 1 76 1 99 37.5 3 85 11 1 2LA-BNS92ADLLB 1 14 2 1.1.6 24.2 26.4 2 47 2 69 51. 5 2 1 4 1 Minimum allowable value fo cone adius dimension o 1. 176

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 2.3.14 56.9 56. 65. 54.5 52.5 67.5.6.3 2LA-BNS91ADLLB 22.3.19 62.6 61.7 72.1 6.5 59.5 74.5 1.6 2LA-BNS911ADLLB 23.5.21 67.6 66.7 77.1 65.5 64.5 79.5 1.6 2LA-BNS912ADLLB 24.7.22 72.6 71.7 82.1 7.5 69.5 84.5 1.6 2LA-BNS913ADLLB 27.9.38 79.2 78.3 9.2 75.5 74.5 94.5 1.6 2LA-BNS914ADLLB 29.1.39 84.2 83.3 95.2 8.5 79.5 99.5 1.6 2LA-BNS915ADLLB 3.3.41 89.2 88.3 1.2 85.5 84.5 14.5 1.6 2LA-BNS916ADLLB 33..59 96. 95. 18.6 92 89.5 113 1.6 2LA-BNS917ADLLB 34.2.62 1.9 1. 113.6 97 94.5 118 1.6 2LA-BNS918ADLLB 35.4.65 15.9 15. 118.6 12 99.5 123 1.6 2LA-BNS919ADLLB 38.1.87 111.9 11.9 127.3 17 14.5 133 1.6 2LA-BNS92ADLLB 177

Main Spindle Beaings Sealed high-speed angula contact ball beaings (steel ball type) 2LA-BNS LLB seies Contact angle 15 d 45 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 2LA-BNS9CLLB 45 75 16 1.6 11.8 9.15 1 21 93 13.4 1 37 1.7 22 2 2LA-BNS1CLLB 5 8 16 1.6 14.7 11.5 1 5 1 17 16.8 1 72 1.7 2 5 2LA-BNS11CLLB 55 9 18 1.1.6 17.3 13.6 1 76 1 38 19.9 2 3 1.6 18 3 2LA-BNS12CLLB 6 95 18 1.1.6 18.1 15. 1 85 1 53 22. 2 24 1.7 17 2 2LA-BNS13CLLB 65 1 18 1.1.6 18.4 15.8 1 87 1 61 23.2 2 36 1.8 16 1 2LA-BNS14CLLB 7 11 2 1.1.6 22.4 19.9 2 29 2 3 29.2 2 98 1.8 14 8 2LA-BNS15CLLB 75 115 2 1.1.6 23.9 22.4 2 44 2 29 33. 3 35 1.9 14 2LA-BNS16CLLB 8 125 22 1.1.6 27.4 25.7 2 79 2 62 38. 3 85 1.9 13 2LA-BNS17CLLB 85 13 22 1.1.6 27.7 26.8 2 83 2 74 39.5 4 1.9 12 4 2LA-BNS18CLLB 9 14 24 1.5 1 32. 31.5 3 3 3 2 46. 4 7 1.9 11 6 2LA-BNS19CLLB 95 145 24 1.5 1 32.5 32.5 3 3 3 35 48. 4 9 11. 11 1 2LA-BNS2CLLB 1 15 24 1.5 1 33.5 35. 3 45 3 6 51.5 5 25 11. 1 6 1 Minimum allowable value fo cone adius dimension o 1. 178

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 16.1.26 54.1 53.3 65. 5.5 49.5 69.5 1.6 2LA-BNS9CLLB 16.8.28 58.4 57.5 7.5 55.5 54.5 74.5 1.6 2LA-BNS1CLLB 18.8.41 65.2 64.1 78.7 62 59.5 83 1.6 2LA-BNS11CLLB 19.5.44 7.1 69.1 83.5 67 64.5 88 1.6 2LA-BNS12CLLB 2.1.47 75.2 74.2 88.2 72 69.5 93 1.6 2LA-BNS13CLLB 22.2.66 81.9 8.8 96.8 77 74.5 13 1.6 2LA-BNS14CLLB 22.8.69 86.8 85.8 12.2 82 79.5 18 1.6 2LA-BNS15CLLB 24.8.94 93.7 92.5 11.2 87 84.5 118 1.6 2LA-BNS16CLLB 25.5.98 98.6 97.5 115.4 92 89.5 123 1.6 2LA-BNS17CLLB 27.5 1.29 15.3 14.1 123.2 98.5 95.5 131.5 1.5 1 2LA-BNS18CLLB 28.2 1.34 11.4 19.1 128.1 13.5 1.5 136.5 1.5 1 2LA-BNS19CLLB 28.9 1.4 115.4 114.2 132.7 18.5 15.5 141.5 1.5 1 2LA-BNS2CLLB 179

Main Spindle Beaings Sealed high-speed angula contact ball beaings (steel ball type) 2LA-BNS LLB seies Contact angle 2 d 45 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 2LA-BNS9LLB 45 75 16 1.6 11.5 8.95 1 18 91 15. 1 53 23 5 2LA-BNS1LLB 5 8 16 1.6 14.4 11.2 1 47 1 15 18.8 1 92 21 6 2LA-BNS11LLB 55 9 18 1.1.6 16.8 13.3 1 72 1 35 22.2 2 26 19 4 2LA-BNS12LLB 6 95 18 1.1.6 17.6 14.7 1 8 1 49 24.6 2 5 18 2 2LA-BNS13LLB 65 1 18 1.1.6 17.9 15.4 1 83 1 57 25.9 2 64 17 1 2LA-BNS14LLB 7 11 2 1.1.6 21.9 19.4 2 23 1 98 32.5 3 3 15 6 2LA-BNS15LLB 75 115 2 1.1.6 23.3 21.9 2 38 2 23 36.5 3 75 14 8 2LA-BNS16LLB 8 125 22 1.1.6 26.7 25.1 2 72 2 56 42. 4 3 13 7 2LA-BNS17LLB 85 13 22 1.1.6 27. 26.2 2 76 2 67 44. 4 5 13 1 2LA-BNS18LLB 9 14 24 1.5 1 31.5 3.5 3 2 3 15 51.5 5 25 12 2 2LA-BNS19LLB 95 145 24 1.5 1 31.5 32. 3 25 3 25 53.5 5 45 11 7 2LA-BNS2LLB 1 15 24 1.5 1 33. 34.5 3 35 3 5 57.5 5 85 11 3 1 Minimum allowable value fo cone adius dimension o 1. 18

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 19..26 54.1 53.3 65. 5.5 49.5 69.5 1.6 2LA-BNS9LLB 19.9.28 58.4 57.5 7.5 55.5 54.5 74.5 1.6 2LA-BNS1LLB 22.3.41 65.2 64.2 78.7 62 59.5 83 1.6 2LA-BNS11LLB 23.2.44 7.1 69.2 83.5 67 64.5 88 1.6 2LA-BNS12LLB 24.1.47 75.2 74.2 88.2 72 69.5 93 1.6 2LA-BNS13LLB 26.5.66 81.9 8.8 96.8 77 74.5 13 1.6 2LA-BNS14LLB 27.4.69 86.8 85.8 12.2 82 79.5 18 1.6 2LA-BNS15LLB 29.8.94 93.7 92.5 11.2 87 84.5 118 1.6 2LA-BNS16LLB 3.7.98 98.6 97.5 115.4 92 89.5 123 1.6 2LA-BNS17LLB 33.1 1.29 15.3 14.2 123.2 98.5 95.5 131.5 1.5 1 2LA-BNS18LLB 34. 1.34 11.4 19.2 128.1 13.5 1.5 136.5 1.5 1 2LA-BNS19LLB 34.9 1.4 115.4 114.2 132.7 18.5 15.5 141.5 1.5 1 2LA-BNS2LLB 181

Main Spindle Beaings Sealed high-speed angula contact ball beaings (steel ball type) 2LA-BNS LLB seies Contact angle 25 d 45 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 2LA-BNS9ADLLB 45 75 16 1.6 11.2 8.65 1 14 885 16.7 1 7 2 8 2LA-BNS1ADLLB 5 8 16 1.6 13.9 1.9 1 42 1 11 21. 2 14 19 2 2LA-BNS11ADLLB 55 9 18 1.1.6 16.3 12.9 1 66 1 31 24.8 2 53 17 2 2LA-BNS12ADLLB 6 95 18 1.1.6 17.1 14.2 1 74 1 45 27.4 2 8 16 1 2LA-BNS13ADLLB 65 1 18 1.1.6 17.3 14.9 1 77 1 52 28.9 2 94 15 2 2LA-BNS14ADLLB 7 11 2 1.1.6 21.2 18.8 2 16 1 92 36.5 3 7 13 9 2LA-BNS15ADLLB 75 115 2 1.1.6 22.5 21.2 2 3 2 16 41. 4 2 13 2 2LA-BNS16ADLLB 8 125 22 1.1.6 25.8 24.3 2 63 2 48 47. 4 8 12 2 2LA-BNS17ADLLB 85 13 22 1.1.6 26.1 25.4 2 67 2 59 49. 5 11 6 2LA-BNS18ADLLB 9 14 24 1.5 1 3.5 29.7 3 1 3 5 57.5 5 85 1 9 2LA-BNS19ADLLB 95 145 24 1.5 1 3.5 31. 3 15 3 15 6. 6 1 1 4 2LA-BNS2ADLLB 1 15 24 1.5 1 32. 33. 3 25 3 4 64. 6 55 1 1 Minimum allowable value fo cone adius dimension o 1. 182

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 22.1.26 54.1 53.3 65. 5.5 49.5 69.5 1.6 2LA-BNS9ADLLB 23.3.28 58.4 57.6 7.5 55.5 54.5 74.5 1.6 2LA-BNS1ADLLB 26..41 65.2 64.2 78.7 62 59.5 83 1.6 2LA-BNS11ADLLB 27.2.44 7.1 69.2 83.5 67 64.5 88 1.6 2LA-BNS12ADLLB 28.4.47 75.2 74.2 88.2 72 69.5 93 1.6 2LA-BNS13ADLLB 31.1.66 81.9 8.9 96.8 77 74.5 13 1.6 2LA-BNS14ADLLB 32.3.69 86.8 85.9 12.2 82 79.5 18 1.6 2LA-BNS15ADLLB 35.1.94 93.7 92.6 11.2 87 84.5 118 1.6 2LA-BNS16ADLLB 36.2.98 98.6 97.6 115.4 92 89.5 123 1.6 2LA-BNS17ADLLB 39. 1.29 15.3 14.2 123.2 98.5 95.5 131.5 1.5 1 2LA-BNS18ADLLB 4.2 1.34 11.4 19.2 128.1 13.5 1.5 136.5 1.5 1 2LA-BNS19ADLLB 41.3 1.4 115.4 114.2 132.7 18.5 15.5 141.5 1.5 1 2LA-BNS2ADLLB 183

Main Spindle Beaings Sealed high-speed angula contact ball beaings (ceamic ball type) 5S-2LA-BNS9 LLB seies Contact angle 15 d 5 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 5S-2LA-BNS91CLLB 5 72 12.6.3 8.1 5.5 825 515 6.8 69 7.7 25 6 5S-2LA-BNS911CLLB 55 8 13 1.6 1.3 6.4 1 5 65 8.55 87 7.6 23 1 5S-2LA-BNS912CLLB 6 85 13 1.6 1.6 6.9 1 8 75 9.25 945 7.7 21 5 5S-2LA-BNS913CLLB 65 9 13 1.6 1.9 7.4 1 11 755 9.95 1 1 7.8 2 1 5S-2LA-BNS914CLLB 7 1 16 1.6 13.7 9.35 1 4 95 12.5 1 28 7.7 18 3 5S-2LA-BNS915CLLB 75 15 16 1.6 14.1 1. 1 44 1 2 13.4 1 37 7.8 17 3 5S-2LA-BNS916CLLB 8 11 16 1.6 14.5 1.6 1 48 1 9 14.3 1 46 7.8 16 4 5S-2LA-BNS917CLLB 85 12 18 1.1.6 17.4 12.7 1 77 1 29 17. 1 73 7.8 15 2 5S-2LA-BNS918CLLB 9 125 18 1.1.6 17.9 13.5 1 82 1 37 18.1 1 85 7.8 14 5 5S-2LA-BNS919CLLB 95 13 18 1.1.6 18.3 14.3 1 87 1 46 19.2 1 96 7.8 13 9 5S-2LA-BNS92CLLB 1 14 2 1.1.6 25.7 19.4 2 62 1 98 26. 2 65 7.7 13 1 Minimum allowable value fo cone adius dimension o 1. 184

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 14.2.14 56.9 56. 65. 54.5 52.5 67.5.6.3 5S-2LA-BNS91CLLB 15.6.18 62.6 61.7 72.1 6.5 59.5 74.5 1.6 5S-2LA-BNS911CLLB 16.3.2 67.6 66.7 77.1 65.5 64.5 79.5 1.6 5S-2LA-BNS912CLLB 16.9.21 72.6 71.7 82.1 7.5 69.5 84.5 1.6 5S-2LA-BNS913CLLB 19.5.36 79.2 78.3 9.2 75.5 74.5 94.5 1.6 5S-2LA-BNS914CLLB 2.1.37 84.2 83.3 95.2 8.5 79.5 99.5 1.6 5S-2LA-BNS915CLLB 2.8.39 89.2 88.3 1.2 85.5 84.5 14.5 1.6 5S-2LA-BNS916CLLB 22.8.57 96. 95. 18.6 92 89.5 113 1.6 5S-2LA-BNS917CLLB 23.5.59 1.9 1. 113.6 97 94.5 118 1.6 5S-2LA-BNS918CLLB 24.2.62 15.9 15. 118.6 12 99.5 123 1.6 5S-2LA-BNS919CLLB 26.2.82 111.9 11.9 127.3 17 14.5 133 1.6 5S-2LA-BNS92CLLB 185

Main Spindle Beaings Sealed high-speed angula contact ball beaings (ceamic ball type) 5S-2LA-BNS9 LLB seies Contact angle 2 d 5 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-BNS91LLB 5 72 12.6.3 7.9 4.95 85 55 7.75 79 28 2 5S-2LA-BNS911LLB 55 8 13 1.6 1.1 6.25 1 3 635 9.75 995 25 5 5S-2LA-BNS912LLB 6 85 13 1.6 1.4 6.7 1 6 685 1.5 1 8 23 7 5S-2LA-BNS913LLB 65 9 13 1.6 1.6 7.2 1 8 735 11.3 1 16 22 2 5S-2LA-BNS914LLB 7 1 16 1.6 13.4 9.1 1 36 93 14.3 1 46 2 2 5S-2LA-BNS915LLB 75 15 16 1.6 13.7 9.75 1 4 995 15.3 1 56 19 1 5S-2LA-BNS916LLB 8 11 16 1.6 14.1 1.4 1 44 1 6 16.3 1 66 18 1 5S-2LA-BNS917LLB 85 12 18 1.1.6 16.9 12.3 1 73 1 26 19.4 1 98 16 8 5S-2LA-BNS918LLB 9 125 18 1.1.6 17.4 13.1 1 77 1 34 2.6 2 1 16 5S-2LA-BNS919LLB 95 13 18 1.1.6 17.8 14. 1 82 1 42 21.9 2 23 15 3 5S-2LA-BNS92LLB 1 14 2 1.1.6 25.1 18.9 2 56 1 93 29.7 3 5 14 3 1 Minimum allowable value fo cone adius dimension o 1. 186

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 17.2.14 56.9 56. 65. 54.5 52.5 67.5.6.3 5S-2LA-BNS91LLB 18.9.18 62.6 61.7 72.1 6.5 59.5 74.5 1.6 5S-2LA-BNS911LLB 19.8.2 67.6 66.7 77.1 65.5 64.5 79.5 1.6 5S-2LA-BNS912LLB 2.7.21 72.6 71.7 82.1 7.5 69.5 84.5 1.6 5S-2LA-BNS913LLB 23.6.36 79.2 78.3 9.2 75.5 74.5 94.5 1.6 5S-2LA-BNS914LLB 24.5.37 84.2 83.3 95.2 8.5 79.5 99.5 1.6 5S-2LA-BNS915LLB 25.4.39 89.2 88.3 1.2 85.5 84.5 14.5 1.6 5S-2LA-BNS916LLB 27.8.57 96. 95. 18.6 92 89.5 113 1.6 5S-2LA-BNS917LLB 28.7.59 1.9 1. 113.6 97 94.5 118 1.6 5S-2LA-BNS918LLB 29.6.62 15.9 15. 118.6 12 99.5 123 1.6 5S-2LA-BNS919LLB 32..82 111.9 11.9 127.3 17 14.5 133 1.6 5S-2LA-BNS92LLB 187

Main Spindle Beaings Sealed high-speed angula contact ball beaings (ceamic ball type) 5S-2LA-BNS9 LLB seies Contact angle 25 d 5 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-BNS91ADLLB 5 72 12.6.3 7.6 4.75 775 485 8.8 895 25 6 5S-2LA-BNS911ADLLB 55 8 13 1.6 9.75 6.5 99 615 11.1 1 13 23 2 5S-2LA-BNS912ADLLB 6 85 13 1.6 1. 6.5 1 2 665 12. 1 22 21 6 5S-2LA-BNS913ADLLB 65 9 13 1.6 1.3 7. 1 5 715 12.9 1 31 2 2 5S-2LA-BNS914ADLLB 7 1 16 1.6 12.9 8.8 1 32 9 16.2 1 65 18 4 5S-2LA-BNS915ADLLB 75 15 16 1.6 13.3 9.45 1 35 96 17.3 1 77 17 4 5S-2LA-BNS916ADLLB 8 11 16 1.6 13.6 1. 1 39 1 2 18.5 1 89 16 5 5S-2LA-BNS917ADLLB 85 12 18 1.1.6 16.4 11.9 1 67 1 22 22. 2 24 15 3 5S-2LA-BNS918ADLLB 9 125 18 1.1.6 16.8 12.7 1 71 1 3 23.4 2 39 14 5 5S-2LA-BNS919ADLLB 95 13 18 1.1.6 17.2 13.5 1 76 1 38 24.8 2 53 13 9 5S-2LA-BNS92ADLLB 1 14 2 1.1.6 24.2 18.3 2 47 1 87 33.5 3 45 13 1 Minimum allowable value fo cone adius dimension o 1. 188

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 2.3.14 56.9 56. 65. 54.5 52.5 67.5.6.3 5S-2LA-BNS91ADLLB 22.3.18 62.6 61.7 72.1 6.5 59.5 74.5 1.6 5S-2LA-BNS911ADLLB 23.5.2 67.6 66.7 77.1 65.5 64.5 79.5 1.6 5S-2LA-BNS912ADLLB 24.7.21 72.6 71.7 82.1 7.5 69.5 84.5 1.6 5S-2LA-BNS913ADLLB 27.9.36 79.2 78.3 9.2 75.5 74.5 94.5 1.6 5S-2LA-BNS914ADLLB 29.1.37 84.2 83.3 95.2 8.5 79.5 99.5 1.6 5S-2LA-BNS915ADLLB 3.3.39 89.2 88.3 1.2 85.5 84.5 14.5 1.6 5S-2LA-BNS916ADLLB 33..57 96. 95. 18.6 92 89.5 113 1.6 5S-2LA-BNS917ADLLB 34.2.59 1.9 1. 113.6 97 94.5 118 1.6 5S-2LA-BNS918ADLLB 35.4.62 15.9 15. 118.6 12 99.5 123 1.6 5S-2LA-BNS919ADLLB 38.1.82 111.9 11.9 127.3 17 14.5 133 1.6 5S-2LA-BNS92ADLLB 189

Main Spindle Beaings Sealed high-speed angula contact ball beaings (ceamic ball type) 5S-2LA-BNS LLB seies Contact angle 15 d 45 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co fo lubication 5S-2LA-BNS9CLLB 45 75 16 1.6 11.8 6.2 1 21 645 8.45 86 7.4 26 5S-2LA-BNS1CLLB 5 8 16 1.6 14.7 7.5 1 5 815 1.6 1 8 7.4 24 5S-2LA-BNS11CLLB 55 9 18 1.1.6 17.3 9.4 1 76 96 12.5 1 28 7.4 21 5 5S-2LA-BNS12CLLB 6 95 18 1.1.6 18.1 1.4 1 85 1 6 13.9 1 42 7.4 2 1 5S-2LA-BNS13CLLB 65 1 18 1.1.6 18.4 1.9 1 87 1 12 14.6 1 49 7.5 18 9 5S-2LA-BNS14CLLB 7 11 2 1.1.6 22.4 13.8 2 29 1 41 18.4 1 88 7.5 17 3 5S-2LA-BNS15CLLB 75 115 2 1.1.6 23.9 15.5 2 44 1 59 2.8 2 12 7.5 16 4 5S-2LA-BNS16CLLB 8 125 22 1.1.6 27.4 17.8 2 79 1 82 23.8 2 43 7.5 15 2 5S-2LA-BNS17CLLB 85 13 22 1.1.6 27.7 18.6 2 83 1 9 24.9 2 54 7.6 14 5 5S-2LA-BNS18CLLB 9 14 24 1.5 1 32. 21.8 3 3 2 22 29.2 2 97 7.6 13 6 5S-2LA-BNS19CLLB 95 145 24 1.5 1 32.5 22.7 3 3 2 31 3.5 3 1 7.6 13 5S-2LA-BNS2CLLB 1 15 24 1.5 1 33.5 24.4 3 45 2 48 32.5 3 35 7.6 12 5 1 Minimum allowable value fo cone adius dimension o 1. 19

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 16.1.25 54.1 53.3 65. 5.5 49.5 69.5 1.6 5S-2LA-BNS9CLLB 16.8.26 58.4 57.5 7.5 55.5 54.5 74.5 1.6 5S-2LA-BNS1CLLB 18.8.38 65.2 64.1 78.7 62 59.5 83 1.6 5S-2LA-BNS11CLLB 19.5.41 7.1 69.1 83.5 67 64.5 88 1.6 5S-2LA-BNS12CLLB 2.1.44 75.2 74.2 88.2 72 69.5 93 1.6 5S-2LA-BNS13CLLB 22.2.62 81.9 8.8 96.8 77 74.5 13 1.6 5S-2LA-BNS14CLLB 22.8.65 86.8 85.8 12.2 82 79.5 18 1.6 5S-2LA-BNS15CLLB 24.8.88 93.7 92.5 11.2 87 84.5 118 1.6 5S-2LA-BNS16CLLB 25.5.93 98.6 97.5 115.4 92 89.5 123 1.6 5S-2LA-BNS17CLLB 27.5 1.22 15.3 14.1 123.2 98.5 95.5 131.5 1.5 1 5S-2LA-BNS18CLLB 28.2 1.27 11.4 19.1 128.1 13.5 1.5 136.5 1.5 1 5S-2LA-BNS19CLLB 28.9 1.32 115.4 114.2 132.7 18.5 15.5 141.5 1.5 1 5S-2LA-BNS2CLLB 191

Main Spindle Beaings Sealed high-speed angula contact ball beaings (ceamic ball type) 5S-2LA-BNS LLB seies Contact angle 2 d 45 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-BNS9LLB 45 75 16 1.6 11.5 6.2 1 18 63 9.7 985 28 7 5S-2LA-BNS1LLB 5 8 16 1.6 14.4 7.8 1 47 795 12.2 1 24 26 5 5S-2LA-BNS11LLB 55 9 18 1.1.6 16.8 9.2 1 72 935 14.4 1 46 23 7 5S-2LA-BNS12LLB 6 95 18 1.1.6 17.6 1.2 1 8 1 4 15.9 1 62 22 2 5S-2LA-BNS13LLB 65 1 18 1.1.6 17.9 1.7 1 83 1 9 16.7 1 71 2 8 5S-2LA-BNS14LLB 7 11 2 1.1.6 21.9 13.5 2 23 1 37 21.1 2 15 19 1 5S-2LA-BNS15LLB 75 115 2 1.1.6 23.3 15.2 2 38 1 55 23.8 2 42 18 1 5S-2LA-BNS16LLB 8 125 22 1.1.6 26.7 17.4 2 72 1 77 27.2 2 78 16 8 5S-2LA-BNS17LLB 85 13 22 1.1.6 27. 18.1 2 76 1 85 28.4 2 9 16 5S-2LA-BNS18LLB 9 14 24 1.5 1 31.5 21.3 3 2 2 17 33.5 3 4 15 5S-2LA-BNS19LLB 95 145 24 1.5 1 31.5 22.1 3 25 2 26 34.5 3 55 14 3 5S-2LA-BNS2LLB 1 15 24 1.5 1 33. 23.8 3 35 2 42 37.5 3 8 13 8 1 Minimum allowable value fo cone adius dimension o 1. 192

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.57 1.43 1 1 1.9.7 1.63 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.42 1.84 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 19..25 54.1 53.3 65. 5.5 49.5 69.5 1.6 5S-2LA-BNS9LLB 19.9.26 58.4 57.5 7.5 55.5 54.5 74.5 1.6 5S-2LA-BNS1LLB 22.3.38 65.2 64.2 78.7 62 59.5 83 1.6 5S-2LA-BNS11LLB 23.2.41 7.1 69.2 83.5 67 64.5 88 1.6 5S-2LA-BNS12LLB 24.1.44 75.2 74.2 88.2 72 69.5 93 1.6 5S-2LA-BNS13LLB 26.5.62 81.9 8.8 96.8 77 74.5 13 1.6 5S-2LA-BNS14LLB 27.4.65 86.8 85.8 12.2 82 79.5 18 1.6 5S-2LA-BNS15LLB 29.8.88 93.7 92.5 11.2 87 84.5 118 1.6 5S-2LA-BNS16LLB 3.7.93 98.6 97.5 115.4 92 89.5 123 1.6 5S-2LA-BNS17LLB 33.1 1.22 15.3 14.2 123.2 98.5 95.5 131.5 1.5 1 5S-2LA-BNS18LLB 34. 1.27 11.4 19.2 128.1 13.5 1.5 136.5 1.5 1 5S-2LA-BNS19LLB 34.9 1.32 115.4 114.2 132.7 18.5 15.5 141.5 1.5 1 5S-2LA-BNS2LLB 193

Main Spindle Beaings Sealed high-speed angula contact ball beaings (ceamic ball type) 5S-2LA-BNS LLB seies Contact angle 25 d 45 1mm B 1 D D1 d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease d D B s min 1 1s min 1 C Co C Co lubication 5S-2LA-BNS9ADLLB 45 75 16 1.6 11.2 6. 1 14 61 11. 1 12 26 1 5S-2LA-BNS1ADLLB 5 8 16 1.6 13.9 7.55 1 42 77 13.9 1 41 24 1 5S-2LA-BNS11ADLLB 55 9 18 1.1.6 16.3 8.9 1 66 91 16.4 1 67 21 6 5S-2LA-BNS12ADLLB 6 95 18 1.1.6 17.1 9.85 1 74 1 18.1 1 84 2 2 5S-2LA-BNS13ADLLB 65 1 18 1.1.6 17.3 1.4 1 77 1 6 19. 1 94 19 5S-2LA-BNS14ADLLB 7 11 2 1.1.6 21.2 13. 2 16 1 33 24. 2 44 17 4 5S-2LA-BNS15ADLLB 75 115 2 1.1.6 22.5 14.7 2 3 1 5 27. 2 76 16 5 5S-2LA-BNS16ADLLB 8 125 22 1.1.6 25.8 16.9 2 63 1 72 31. 3 15 15 3 5S-2LA-BNS17ADLLB 85 13 22 1.1.6 26.1 17.6 2 67 1 79 32.5 3 3 14 5 5S-2LA-BNS18ADLLB 9 14 24 1.5 1 3.5 2.6 3 1 2 1 38. 3 85 13 6 5S-2LA-BNS19ADLLB 95 145 24 1.5 1 3.5 21.4 3 15 2 19 39.5 4 13 5S-2LA-BNS2ADLLB 1 15 24 1.5 1 32. 23. 3 25 2 35 42.5 4 3 12 5 1 Minimum allowable value fo cone adius dimension o 1. 194

Main Spindle Beaings as as as dada 1as dbda Dynamic equivalent adial loadpxfyfa Single ow / Tandem Back-to-back / Face-to-face e Fa Fe Fa Fe Fa Fe Fa Fe X Y X Y X Y X Y.68 1.41.87 1.92.67 1.41 Back-to-back (DB) Face-to-face (DF) Static equivalent adial loadpoxo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo Yo Xo Yo.5.38 1.76 When Po F with single-ow o tandem aangement, Po F. Load Mass Refeence dimensions Abutment and fillet dimensions Pat cente numbe mm kg mm mm Single-ow da db Da as 1as a (appox.) d1 d2 D1 min min max max max 22.1.25 54.1 53.3 65 5.5 49.5 69.5 1.6 5S-2LA-BNS9ADLLB 23.3.26 58.4 57.6 7.5 55.5 54.5 74.5 1.6 5S-2LA-BNS1ADLLB 26..38 65.2 64.2 78.7 62 59.5 83 1.6 5S-2LA-BNS11ADLLB 27.2.41 7.1 69.2 83.5 67 64.5 88 1.6 5S-2LA-BNS12ADLLB 28.4.44 75.2 74.2 88.2 72 69.5 93 1.6 5S-2LA-BNS13ADLLB 31.1.62 81.9 8.9 96.8 77 74.5 13 1.6 5S-2LA-BNS14ADLLB 32.3.65 86.8 85.9 12.2 82 79.5 18 1.6 5S-2LA-BNS15ADLLB 35.1.88 93.7 92.6 11.2 87 84.5 118 1.6 5S-2LA-BNS16ADLLB 36.2.93 98.6 97.6 115.4 92 89.5 123 1.6 5S-2LA-BNS17ADLLB 39. 1.22 15.3 14.2 123.2 98.5 95.5 131.5 1.5 1 5S-2LA-BNS18ADLLB 4.2 1.27 11.4 19.2 128.1 13.5 1.5 136.5 1.5 1 5S-2LA-BNS19ADLLB 41.3 1.32 115.4 114.2 132.7 18.5 15.5 141.5 1.5 1 5S-2LA-BNS2ADLLB 195

Main Spindle Beaings Angula contact ball beaings fo motos and lathes (steel ball type) BNT9 seies Contact angle 15 d 1 65mm B 1 D D1d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication BNT9 1 22 6.3.15 2.3 1. 235 11 1.43 146 9.3 62 2 125 6 BNT91 12 24 6.3.15 2.57 1.22 262 124 1.76 18 9.6 55 3 111 7 BNT92 15 28 7.3.15 3.7 1.75 375 179 2.54 259 9.5 46 3 93 5 BNT93 17 3 7.3.15 3.9 1.95 395 199 2.82 288 9.7 42 3 85 5 BNT94 2 37 9.3.15 5.6 2.99 57 35 4.35 44 9.7 34 9 7 5 BNT95 25 42 9.3.15 6. 3.55 61 36 5.15 525 1.1 29 7 6 BNT96 3 47 9.3.15 6.35 4.1 65 42 6. 61 1.4 25 8 52 2 BNT97 35 55 1.6.3 1.1 6.3 1 3 645 9.2 94 1.1 21 42 4 BNT98 4 62 12.6.3 1.7 7.3 1 9 74 1.6 1 8 1.4 18 5 37 5 BNT99 45 68 12.6.3 13.2 9.2 1 35 935 13.4 1 37 1.4 16 7 33 8 BNT91 5 72 12.6.3 14. 1.3 1 43 1 6 15.1 1 54 1.5 15 5 31 3 BNT911 55 8 13 1.6 14.6 11.6 1 49 1 18 17. 1 73 1.7 13 8 27 6 BNT912 6 85 13 1.6 15.3 12.8 1 56 1 3 18.7 1 91 1.8 12 8 25 7 BNT913 65 9 13 1.6 15.5 13.4 1 58 1 37 19.7 2 1 1.9 12 24 1 Minimum allowable value fo cone adius dimension o 1. 196

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da db Da as 1as a (appox.) (appox.) d1 d2 D1 min min max max max 5.2.3.1 14. 12.7 18. 12.2 11.2 2.3.15 BNT9 5.4.4.11 16. 14.7 2. 14.2 13.2 22.3.15 BNT91 6.4.6.16 19. 17.4 24. 17.2 16.2 26.3.15 BNT92 6.7.8.17 21. 19.4 26. 19.2 18.2 28.3.15 BNT93 8.4 1.4.37 25.5 23.5 31.4 22.5 21.5 34.5.3.15 BNT94 9. 1.7.43 3.5 28.5 36.5 27.5 26.5 39.5.3.15 BNT95 9.7 1.9.49 35.5 33.5 41.5 32.5 31.5 44.5.3.15 BNT96 11.1 2.8.73 41.2 38.5 48.8 39.5 37.5 5.5.6.3 BNT97 12.9 4.5.11 47. 44.4 55. 44.5 42.5 57.5.6.3 BNT98 13.6 5.2.13 52.1 49.1 6.9 49.5 48 63.5.6.3 BNT99 14.2 6.2.13 56.6 53.6 65.4 54.5 52.5 67.5.6.3 BNT91 15.6 7.8.18 63.2 6.1 71.8 6.5 59.5 74.5 1.6 BNT911 16.3 8.3.2 68.1 65.1 76.9 65.5 64.5 79.5 1.6 BNT912 17. 8.9.21 73.1 7.1 81.9 7.5 69.5 84.5 1.6 BNT913 197

Main Spindle Beaings Angula contact ball beaings fo motos and lathes (steel ball type) BNT seies Contact angle 15 d 1 7mm B 1 D D1d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication BNT 1 26 8.3.15 3.75 1.45 385 148 2.7 211 8.3 6 3 12 1 BNT1 12 28 8.3.15 4.15 1.73 42 176 2.48 253 8.8 52 7 14 9 BNT2 15 32 9.3.15 4.75 2.22 485 226 3.2 325 9.2 46 91 5 BNT3 17 35 1.3.15 5.9 2.7 6 275 3.9 395 9. 41 5 82 7 BNT4 2 42 12.6.3 8. 3.95 815 45 5.7 58 9.2 34 3 68 3 BNT5 25 47 12.6.3 8.95 4.85 91 495 7.5 72 9.6 3 59 7 BNT6 3 55 13 1.6 11.6 6.75 1 18 685 9.75 995 9.8 25 1 5 BNT7 35 62 14 1.6 14.6 8.95 1 49 91 13. 1 32 9.8 2 1 4 2 BNT8 4 68 15 1.6 15.7 1.4 1 6 1 6 15.1 1 54 1. 18 1 36 1 BNT9 45 75 16 1.6 18.6 12.6 1 9 1 29 18.4 1 87 1.1 16 3 32 5 BNT1 5 8 16 1.6 19.9 14.3 2 3 1 46 2.9 2 13 1.2 15 3 BNT11 55 9 18 1.1.6 26.1 18.7 2 66 1 91 27.3 2 78 1.1 13 2 26 4 BNT12 6 95 18 1.1.6 26.8 2. 2 73 2 4 29.2 2 98 1.3 12 3 24 7 BNT13 65 1 18 1.1.6 28.4 22.4 2 89 2 29 32.5 3 35 1.4 11 6 23 2 BNT14 7 11 2 1.1.6 36. 28.1 3 65 2 87 41. 4 2 1.3 1 6 21 3 1 Minimum allowable value fo cone adius dimension o 1. 198

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da db Da as 1as a (appox.) (appox.) d1 d2 D1 min min max max max 6.5.9.15 14.6 13. 21. 12.5 11.2 23.5.3.15 BNT 6.8 1..2 17.4 15.6 23.5 14.5 13.2 25.5.3.15 BNT1 7.7 1.3.29 2.4 18.5 26.5 17.5 16.2 29.5.3.15 BNT2 8.5 1.8.33 22.2 2.2 29.6 19.5 18.2 32.5.3.15 BNT3 1.3 3..57 27.4 24.9 35.5 24.5 22.5 37.5.6.3 BNT4 1.9 3.5.67 31.8 29.4 4.6 29.5 27.5 42.5.6.3 BNT5 12.3 4.3.11 38.4 35.5 47.8 35.5 34.5 49.5 1.6 BNT6 13.6 6.5.15 43.4 4.2 53.8 4.5 39.5 56.5 1.6 BNT7 14.8 8..18 48.8 45.7 59.4 45.5 44.5 62.5 1.6 BNT8 16.1 9.6.23 54.2 5.9 65.6 5.5 49.5 69.5 1.6 BNT9 16.8 11.26 59.6 55.9 7.2 55.5 54.5 74.5 1.6 BNT1 18.8 16.38 66.1 61.8 79.1 62 59.5 83 1.6 BNT11 19.5 19.4 71.1 66.8 84.1 67 64.5 88 1.6 BNT12 2.2 2.42 75.2 71.8 89.8 72 69.5 93 1.6 BNT13 22.2 27.56 82.3 77.7 97.9 77 74.5 13 1.6 BNT14 199

Main Spindle Beaings Angula contact ball beaings fo motos and lathes (steel ball type) BNT2 seies Contact angle 15 d 1 8mm B 1 D D1d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication BNT2 1 3 9.6.3 4.15 1.71 42 175 2.46 25 8.7 53 3 16 8 BNT21 12 32 1.6.3 5.4 2.28 55 232 3.25 33 8.5 48 4 97 BNT22 15 35 11.6.3 6.85 2.97 7 3 4.25 43 8.5 42 6 85 4 BNT23 17 4 12.6.3 8.55 3.8 87 385 5.4 555 8.5 37 74 1 BNT24 2 47 14 1.6 11.2 5.35 1 14 545 7.7 785 8.8 3 9 61 9 BNT25 25 52 15 1.6 12.7 6.7 1 29 685 9.7 99 9.2 27 3 54 7 BNT26 3 62 16 1.6 17.6 9.6 1 8 98 13.9 1 42 9.2 22 9 45 9 BNT27 35 72 17 1.1.6 23.2 13.1 2 37 1 33 18.8 1 92 9.1 18 1 36 BNT28 4 8 18 1.1.6 27.8 16.5 2 83 1 68 23.8 2 43 9.3 16 2 32 1 BNT29 45 85 19 1.1.6 31. 18.9 3 2 1 92 27.3 2 78 9.3 14 9 29 6 BNT21 5 9 2 1.1.6 32.5 2.8 3 35 2 12 3. 3 5 9.5 13 9 27 5 BNT211 55 1 21 1.5 1 4.5 26.2 4 15 2 67 38. 3 85 9.5 12 3 24 4 BNT212 6 11 22 1.5 1 49. 32.5 5 3 3 47. 4 8 9.5 11 21 8 BNT213 65 12 23 1.5 1 53.5 36. 5 45 3 65 52. 5 3 9.5 1 3 2 4 BNT214 7 125 24 1.5 1 58. 39.5 5 9 4 57. 5 8 9.6 9 7 19 4 BNT215 75 13 25 1.5 1 6.5 43. 6 2 4 4 62.5 6 35 9.7 9 2 18 3 BNT216 8 14 26 2 1 71. 5.5 7 25 5 15 73.5 7 5 9.7 8 6 17 2 1 Minimum allowable value fo cone adius dimension o 1. 2

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da db Da as 1as a (appox.) (appox.) d1 d2 D1 min min max max max 7.2 1.1.19 17. 15. 23. 14.5 12.5 25.5.6.3 BNT2 8. 1.5.25 18.4 16.2 26. 16.5 14.5 27.5.6.3 BNT21 8.9 2.2.35 2.8 18.4 29.4 19.5 17.5 3.5.6.3 BNT22 9.9 2.9.54 24.2 21.4 33.6 21.5 19.5 35.5.6.3 BNT23 11.7 4.6.92 29.4 26.2 39.4 25.5 24.5 41.5 1.6 BNT24 12.8 6.1.13 33.8 3.7 44.2 3.5 29.5 46.5 1.6 BNT25 14.3 8.3.2 4.6 36.6 52.6 35.5 34.5 56.5 1.6 BNT26 15.8 1.29 46.8 42. 6.6 42 39.5 65 1.6 BNT27 17.2 13.38 53. 47.7 67. 47 44.5 73 1.6 BNT28 18.3 16.44 57.3 51.9 73. 52 49.5 78 1.6 BNT29 19.5 2.46 62.2 56.8 78. 57 54.5 83 1.6 BNT21 21. 25.61 69. 62.8 86.4 63.5 6.5 91.5 1.5 1 BNT211 22.8 32.78 77. 7.2 96.4 68.5 65.5 11.5 1.5 1 BNT212 24.1 37 1.1 82.5 75.3 12.5 73.5 7.5 111.5 1.5 1 BNT213 25.2 47 1.8 87. 79.5 18. 78.5 75.5 116.5 1.5 1 BNT214 26.6 54 1.17 93. 85.5 114.5 83.5 8.5 121.5 1.5 1 BNT215 27.9 58 1.45 98.1 9.4 122. 9 85.5 13 2 1 BNT216 21

Main Spindle Beaings Angula contact ball beaings fo motos and lathes (ceamic ball type) 5S-BNT9 seies Contact angle 15 d 1 65mm B 1 D D1d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-BNT9 1 22 6.3.15 2.3.69 235 7.95 92 6.4 72 5 145 6 5S-BNT91 12 24 6.3.15 2.57.84 262 86 1.11 113 6.7 64 4 129 4 5S-BNT92 15 28 7.3.15 3.7 1.22 375 124 1.6 163 6.6 54 18 4 5S-BNT93 17 3 7.3.15 3.9 1.35 395 138 1.78 182 6.7 49 4 99 1 5S-BNT94 2 37 9.3.15 5.6 2.7 57 211 2.74 279 6.8 4 7 81 8 5S-BNT95 25 42 9.3.15 6. 2.46 61 251 3.25 33 7. 34 6 69 6 5S-BNT96 3 47 9.3.15 6.35 2.84 65 29 3.8 385 7.2 3 1 6 5 5S-BNT97 35 55 1.6.3 1.1 4.4 1 3 445 5.8 59 7. 24 4 49 3 5S-BNT98 4 62 12.6.3 1.7 5.5 1 9 515 6.7 685 7.2 21 6 43 5 5S-BNT99 45 68 12.6.3 13.2 6.35 1 35 65 8.45 865 7.2 19 5 39 3 5S-BNT91 5 72 12.6.3 14. 7.15 1 43 73 9.55 975 7.3 18 36 4 5S-BNT911 55 8 13 1.6 14.6 8. 1 49 82 1.7 1 9 7.4 16 32 5S-BNT912 6 85 13 1.6 15.3 8.85 1 56 9 11.8 1 2 7.5 14 9 29 8 5S-BNT913 65 9 13 1.6 15.5 9.3 1 58 945 12.4 1 27 7.5 13 9 27 9 1 Minimum allowable value fo cone adius dimension o 1. 22

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da db Da as 1as a (appox.) (appox.) d1 d2 D1 min min max max max 5.2.3.9 14. 12.7 18. 12.2 11.2 2.3.15 5S-BNT9 5.4.4.1 16. 14.7 2. 14.2 13.2 22.3.15 5S-BNT91 6.4.6.14 19. 17.4 24. 17.2 16.2 26.3.15 5S-BNT92 6.7.8.15 21. 19.4 26. 19.2 18.2 28.3.15 5S-BNT93 8.4 1.4.33 25.5 23.5 31.4 22.5 21.5 34.5.3.15 5S-BNT94 9. 1.7.39 3.5 28.5 36.5 27.5 26.5 39.5.3.15 5S-BNT95 9.7 1.9.44 35.5 33.5 41.5 32.5 31.5 44.5.3.15 5S-BNT96 11.1 2.8.63 41.2 38.5 48.8 39.5 37.5 5.5.6.3 5S-BNT97 12.9 4.5.1 47. 44.4 55. 44.5 42.5 57.5.6.3 5S-BNT98 13.6 5.2.11 52.1 49.1 6.9 49.5 48 63.5.6.3 5S-BNT99 14.2 6.2.11 56.6 53.6 65.4 54.5 52.5 67.5.6.3 5S-BNT91 15.6 7.8.16 63.2 6.1 71.8 6.5 59.5 74.5 1.6 5S-BNT911 16.3 8.3.17 68.1 65.1 76.9 65.5 64.5 79.5 1.6 5S-BNT912 17. 8.9.19 73.1 7.1 81.9 7.5 69.5 84.5 1.6 5S-BNT913 23

Main Spindle Beaings Angula contact ball beaings fo motos and lathes (ceamic ball type) 5S-BNT seies Contact angle 15 d 1 7mm B 1 D D1d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-BNT 1 26 8.3.15 3.75 1.1 385 13 1.31 133 5.7 7 1 14 2 5S-BNT1 12 28 8.3.15 4.15 1.2 42 122 1.57 16 6.1 61 2 122 4 5S-BNT2 15 32 9.3.15 4.75 1.54 485 157 2.2 26 6.4 53 4 16 8 5S-BNT3 17 35 1.3.15 5.9 1.87 6 191 2.45 25 6.3 48 3 96 5 5S-BNT4 2 42 12.6.3 8. 2.74 815 279 3.6 365 6.4 39 8 79 7 5S-BNT5 25 47 12.6.3 8.95 3.35 91 345 4.45 455 6.7 34 9 69 7 5S-BNT6 3 55 13 1.6 11.6 4.65 1 18 475 6.15 63 6.8 29 2 58 4 5S-BNT7 35 62 14 1.6 14.6 6.2 1 49 63 8.2 835 6.8 23 5 46 9 5S-BNT8 4 68 15 1.6 15.7 7.2 1 6 735 9.55 975 7. 21 1 42 1 5S-BNT9 45 75 16 1.6 18.6 8.75 1 9 89 11.6 1 18 7. 19 37 9 5S-BNT1 5 8 16 1.6 19.9 9.9 2 3 1 1 13.2 1 34 7.1 17 5 35 5S-BNT11 55 9 18 1.1.6 26.1 13. 2 66 1 32 17.2 1 76 7. 15 5 31 5S-BNT12 6 95 18 1.1.6 26.8 13.9 2 73 1 42 18.4 1 88 7.1 14 5 29 5S-BNT13 65 1 18 1.1.6 28.4 15.5 2 89 1 58 2.7 2 11 7.2 13 6 27 3 5S-BNT14 7 11 2 1.1.6 36. 19.5 3 65 1 99 25.9 2 64 7.1 12 5 25 1 Minimum allowable value fo cone adius dimension o 1. 24

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da db Da as 1as a (appox.) (appox.) d1 d2 D1 min min max max max 6.5.9.13 14.6 13. 21. 12.5 11.2 23.5.3.15 5S-BNT 6.8 1..18 17.4 15.6 23.5 14.5 13.2 25.5.3.15 5S-BNT1 7.7 1.3.26 2.4 18.5 26.5 17.5 16.2 29.5.3.15 5S-BNT2 8.5 1.8.29 22.2 2.2 29.6 19.5 18.2 32.5.3.15 5S-BNT3 1.3 3..5 27.4 24.9 35.5 24.5 22.5 37.5.6.3 5S-BNT4 1.9 3.5.6 31.8 29.4 4.6 29.5 27.5 42.5.6.3 5S-BNT5 12.3 4.3.1 38.4 35.5 47.8 35.5 34.5 49.5 1.6 5S-BNT6 13.6 6.5.13 43.4 4.2 53.8 4.5 39.5 56.5 1.6 5S-BNT7 14.8 8..16 48.8 45.7 59.4 45.5 44.5 62.5 1.6 5S-BNT8 16.1 9.6.21 54.2 5.9 65.6 5.5 49.5 69.5 1.6 5S-BNT9 16.8 11.24 59.6 55.9 7.2 55.5 54.5 74.5 1.6 5S-BNT1 18.8 16.35 66.1 61.8 79.1 62 59.5 83 1.6 5S-BNT11 19.5 19.36 71.1 66.8 84.1 67 64.5 88 1.6 5S-BNT12 2.2 2.37 75.2 71.8 89.8 72 69.5 93 1.6 5S-BNT13 22.2 27.5 82.3 77.7 97.9 77 74.5 13 1.6 5S-BNT14 25

Main Spindle Beaings Angula contact ball beaings fo motos and lathes (ceamic ball type) 5S-BNT2 seies Contact angle 15 d 1 8mm B 1 D D1d2 d d1 a Pat Bounday dimensions Basic load atings Static axial Facto Limiting numbe dynamic static dynamic static load capacity speed mm kn kgf kn kgf min -1 gease oil d D B s min 1 1s min 1 C Co C Co fo lubication lubication 5S-BNT2 1 3 9.6.3 4.15 1.19 42 121 1.55 158 6. 63 126 5S-BNT21 12 32 1.6.3 5.4 1.58 55 161 2.5 29 5.9 57 3 114 5 5S-BNT22 15 35 11.6.3 6.85 2.5 7 21 2.67 272 5.9 5 4 1 8 5S-BNT23 17 4 12.6.3 8.55 2.63 87 268 3.4 35 5.9 43 8 87 5 5S-BNT24 2 47 14 1.6 11.2 3.7 1 14 38 4.85 495 6.1 36 5 73 5S-BNT25 25 52 15 1.6 12.7 4.65 1 29 475 6.1 625 6.4 32 3 64 6 5S-BNT26 3 62 16 1.6 17.6 6.7 1 8 68 8.8 895 6.4 27 1 54 2 5S-BNT27 35 72 17 1.1.6 23.2 9.5 2 37 925 11.9 1 21 6.3 21 3 42 5 5S-BNT28 4 8 18 1.1.6 27.8 11.4 2 83 1 17 15. 1 53 6.4 19 37 9 5S-BNT29 45 85 19 1.1.6 31. 13.1 3 2 1 33 17.2 1 75 6.5 17 5 35 5S-BNT21 5 9 2 1.1.6 32.5 14.4 3 35 1 47 19. 1 94 6.6 16 3 32 5 5S-BNT211 55 1 21 1.5 1 4.5 18.1 4 15 1 85 23.9 2 44 6.6 14 5 28 9 5S-BNT212 6 11 22 1.5 1 49. 22.4 5 2 29 29.5 3 6.6 12 9 25 9 5S-BNT213 65 12 23 1.5 1 53.5 24.9 5 45 2 53 33. 3 35 6.6 12 1 24 2 5S-BNT214 7 125 24 1.5 1 58. 27.3 5 9 2 79 36. 3 65 6.6 11 5 23 5S-BNT215 75 13 25 1.5 1 6.5 29.8 6 2 3 5 39.5 4 6.7 1 8 21 6 5S-BNT216 8 14 26 2 1 71. 35. 7 25 3 6 46.5 4 75 6.7 1 2 2 4 1 Minimum allowable value fo cone adius dimension o 1. 26

Main Spindle Beaings as as dada as 1as dbda Dynamic equivalent adial load PXFYFa Single ow / Tandem Back-to-back / Face-to-face ifofa e FaFe FaFe FaFe FaFe Co X Y X Y X Y X Y.178.35.357.36.714.38 1.57 1.53 1.46 1.76 1.71 1.64 2.56 2.48 2.38 1.7.4 1.42 1.59 2.31 1.43.41 1.44 1.38 1 1.55.72 2.25 2.14 3.57 5.35 7.14.43.44.47.49 1.33 1.25 1.18 1.13 1.49 1.4 1.32 1.26 2.16 2.3 1.92 1.83 Back-to-back (DB) Face-to-face (DF) Static equivalent adial load PoXo FYo Fa Single ow / Tandem Back-to-back / Face-to-face Xo.52 Yo Xo Yo.54 1.4 1.8 When Po F with single-ow o tandem aangement, Po F. Load Intenal Mass Refeence dimensions Abutment and fillet dimensions Pat cente fee space numbe mm cm 3 kg mm mm Single-ow Single-ow da db Da as 1as a (appox.) (appox.) d1 d2 D1 min min max max max 7.2 1.1.17 17. 15. 23. 14.5 12.5 25.5.6.3 5S-BNT2 8. 1.5.21 18.4 16.2 26. 16.5 14.5 27.5.6.3 5S-BNT21 8.9 2.2.3 2.8 18.4 29.4 19.5 17.5 3.5.6.3 5S-BNT22 9.9 2.9.46 24.2 21.4 33.6 21.5 19.5 35.5.6.3 5S-BNT23 11.7 4.6.8 29.4 26.2 39.4 25.5 24.5 41.5 1.6 5S-BNT24 12.8 6.1.11 33.8 3.7 44.2 3.5 29.5 46.5 1.6 5S-BNT25 14.3 8.3.18 4.6 36.6 52.6 35.5 34.5 56.5 1.6 5S-BNT26 15.8 1.25 46.8 42. 6.6 42 39.5 65 1.6 5S-BNT27 17.2 13.33 53. 47.7 67. 47 44.5 73 1.6 5S-BNT28 18.3 16.37 57.3 51.9 73. 52 49.5 78 1.6 5S-BNT29 19.5 2.39 62.2 56.8 78. 57 54.5 83 1.6 5S-BNT21 21. 25.52 69. 62.8 86.4 63.5 6.5 91.5 1.5 1 5S-BNT211 22.8 32.65 77. 7.2 96.4 68.5 65.5 11.5 1.5 1 5S-BNT212 24.1 37.86 82.5 75.3 12.5 73.5 7.5 111.5 1.5 1 5S-BNT213 25.2 47.91 87. 79.5 18. 78.5 75.5 116.5 1.5 1 5S-BNT214 26.6 54.98 93. 85.5 114.5 83.5 8.5 121.5 1.5 1 5S-BNT215 27.9 58 1.21 98.1 9.4 122. 9 85.5 13 2 1 5S-BNT216 27

28 NTN Main Spindle Beaings

NTN Main Spindle Beaings Main Spindle Beaings 1. Cylindical Rolle Beaings CONTENTS 1. Cylindical olle beaings 21 237 q Double-ow cylindical olle beaings 21 w Single-ow cylindical olle beaings 21 e Beaing designations 211 Accuacy of tapeed boe 211 t Accuacy of cylindical olle beaings 212 y Radial intenal cleaance of cylindical olle beaings 214 u Recommended fit of high-pecision cylindical olle beaings 216 i Recommended lubication specifications 217 o Ulta high speed double ow cylindical olle beaings NN3HSRT6 type 218! Ulta high-speed single ow cylindical olle beaings N1HSRT6 type 22!1 Eco-fiendly ai-oil lubicated ulta high speed single ow cylindical olle beaings N1HSLT6 type 222!2 Dimension tables fo cylindical olle beaings Double-ow cylindical olle beaings 224 High speed single-ow cylindical olle beaings 23 Ulta high-speed single ow cylindical olle beaings 234 Eco-fiendly ulta high-speed single ow cylindical olle beaings 236!3 Tape gage and intenal cleaance adjustment gage fo NTN pecision cylindical olle beaings 238!4 Dimension tables fo tape gage 238!5 Dimension table fo mounted intenal cleaance adjustment gage 239 29

NTN Main Spindle Beaings 1. Cylindical Rolle Beaings In a cylindical olle beaing, the olles and aceways ae in linea contact. Consequently this type of beaing can suppot a lage adial load than a point-contact ball beaing. Also, its stuctue is suitable fo high-speed opeation. A cylindical olle beaing used fo the main spindle of a machine tool can have eithe a double- o singleow configuation, and cetain vaiants have a tapeed boe so the adial intenal cleaance can be adjusted. 1 Double-ow cylindical olle beaings Double-ow cylindical olle beaings ae available in two types, NN and NNU, and two seies, 3 and 49. The olles in the NN type beaing ae guided by the ibs of the inne ing. The olles in the NNU type beaing ae guided by the ibs of the oute ing. Beaings ae available with eithe a tapeed boe type (which allows adjustment of adial intenal cleaance of beaing) o a standad cylindical boe. The beaings come in two types, standad type and high-speed HS type. Standad cage is machined bass. 2 Single-ow cylindical olle beaings Single-ow cylindical olle beaings ae available in two types, high-speed N1HS type and ulta highspeed N1HSRT6 type. The N1HS type beaings have high-stength machined bass cages, while the N1HSR type beaings have special molded esin cages, which can be used fo both gease lubication and ai-oil lubication. The eco-fiendly N1HSLT6 type is a vaiation fom the high-speed N1HSRT6 type beaing and can be used with ai-oil lubication only. Cylindical boe N1HS type Tapeed boe Cylindical boe N1HSR type Tapeed boe Cylindical boe NNU type Tapeed boe Cylindical boe N1HSL type Tapeed boe Fig. 1.2 Cylindical boe NN type Fig. 1.1 Tapeed boe 21

NTN Main Spindle Beaings 3 Beaing designations NN49, 3, NNU49 type NN 3 2 HS RT6 K CNA P4 Pecision class P5JIS class 5P2JIS class 2 P4JIS class 4 UPSpecialhighpecision Intenal cleaance codesee Table 1.41.6 ExtenalconfiguationcodeKTapeedinneingboetapeatio1/12 No codecylindical inne ing boe No codemachined bass boe T6Molded PEEK cage. IntenalmodificationcodeNocodeStandadspecification HSHighspeedspecification Boe diamete code HSRUlta Highspeedspecification Dimension seies code Beaing type codenndouble ow with ibbed inne ing NNUDouble ow with ibbed oute ing N1HS, N1HSR type N 1 2 HSR T6 K CNA P4 Cage code T6MoldedPEEKcage HSRtype No codehigh stength machined bass cage Intenalmodificationcode HSHigh speed specification HSRUlta highspeedspecification N1HSL type N 1 2 HSL T6 K CNA P4 +TKZ Space code Eco- fiendly nozzle Cage code T6PEEK esin mold cage Intenalmodificationcode Beaingtypecode NSingle ow with ibbed inne ing 4 Accuacy of tapeed boe NTN specifies the accuacies of tapeed boes confoming with JIS Classes 4 and 2 as shown below. Poo accuacies of the tapeed boe lead to misalignment of the inne ing, causing poo pefomance, pematue seizue and flaking. Use of a tape gauge is ecommended fo highe accuacy of the main spindle. Refe to "6 Handling of Beaings, 8 Tapeed boe cylindical olle beaing and main spindle tape angle" in the Technical Data section fo moe infomation on tape angle. Table 1.1 Toleance of tape-boed beaings Unit: d Δdmp Δd1mpΔdmp (appox.) Vdp Class 4 Class 2 Class 4 Class 2 Class 4 Class 2 ove incl. high low high low high low high low max 18 3 1 6 4 3 2.5 1.5 3 5 12 7 5 3.5 2.5 1.5 5 8 12 18 25 315 4 8 12 18 25 315 4 5 15 2 25 29 32 36 4 8 1 12 14 6 7 8 9 1 12 14 4 5 6 7 3 4 5 7 8 9 1 2 2.5 3.5 4.5 Note: NTN specification d d1 B Theoetical tapeed boe ddmp d1mpdmp d1d1mp B Tapeed boe having single plane mean boe diamete deviation Toleance of 1/12 tape angle4 46 18.8 24 2 23 9.4 1 d1d B 12 VdpSingle adial plane boe diamete vaiation dmpsingle plane mean boe diamete deviation (at theoetical small end on tapeed boe) d1mpsingle plane mean boe diamete deviation (at theoetical lage end on tapeed boe) BNominal inne ing width Fig. 1.3 211

NTN Main Spindle Beaings 5 Accuacy of cylindical olle beaings Table 1.2 Inne ings Nominal boe diamete d Deviation of mean boe diamete in a single plane Δdmp Class 5 Class 4 1 Class 2 1 ove incl. high low high low high low 18 3 5 8 12 15 18 25 315 4 3 5 8 12 15 18 25 315 4 5 6 8 9 1 13 13 15 18 23 5 6 7 8 1 1 12 2.5 2.5 4 5 7 7 8 Vaiation of boe diamete in a single plane Vdsp Diamete seies 9 Diamete seies Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max max 6 8 9 1 13 13 15 18 23 5 6 7 8 1 1 12 2.5 2.5 4 5 7 7 8 5 6 7 8 1 1 12 14 18 4 5 5 6 8 8 9 2.5 2.5 4 5 7 7 8 Vaiation of mean boe diamete Vdmp Class 5 Class 4 Class 2 max 3 4 5 5 7 7 8 9 12 2.5 3 3.5 4 5 5 6 1.5 1.5 2 2.5 3.5 3.5 4 Inne ing adial unout Kia Class 5 Class 4 Class 2 max 1 The toleance of boe diamete deviation Δds applicable to classes 4 and 2 is the same as the toleance of single plane mean boe diamete deviation Δdmp. 4 5 5 6 8 8 1 13 15 3 4 4 5 6 6 8 2.5 2.5 2.5 2.5 2.5 5 5 Table 1.3 Oute ings Nominal boe diamete D Deviation of mean outside diamete in a single plane Vaiation of outside diamete in a single plane ΔDmp VDsp Class 5 Class 4 2 Class 2 2 Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 Diamete seies 9 Diamete seies ove incl. high low high low high low max max 3 5 8 12 15 18 25 315 4 5 63 5 8 12 15 18 25 315 4 5 63 8 7 9 1 11 13 15 18 2 23 28 35 6 7 8 9 1 11 13 15 4 4 5 5 7 8 8 1 7 9 1 11 13 15 18 2 23 28 35 6 7 8 9 1 11 13 15 4 4 5 5 7 8 8 1 5 7 8 8 1 11 14 15 17 21 26 5 5 6 7 8 8 1 11 4 4 5 5 7 8 8 1 Vaiation of mean outside diamete VDmp Class 5 Class 4 Class 2 max 4 5 5 6 7 8 9 1 12 14 18 3 3.5 4 5 5 6 7 8 2 2 2.5 2.5 3.5 4 4 5 Oute ing adial unout Kea Class 5 Class 4 Class 2 max 7 8 1 11 13 15 18 2 23 25 3 5 5 6 7 8 1 11 13 2.5 4 5 5 5 7 7 8 2 The toleance of outside diamete deviation ΔDs applicable to classes 4 and 2 is the same as the toleance of mean single plane outside diamete deviation ΔDmp. 212

NTN Main Spindle Beaings Pependiculaity of inne ing face with espect to the boe Width deviation ΔBs Single beaing Sd Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max high low high low Unit: Width vaiation VBs Class 5 Class 4 Class 2 max 8 4 1.5 12 12 5 2.5 1.5 8 8 9 4 5 5 1.5 1.5 2.5 12 15 2 12 15 2 5 6 7 3 4 4 1.5 1.5 2.5 1 1 11 6 6 7 2.5 4 5 25 25 3 25 3 35 8 8 1 5 5 6 2.5 4 5 13 15 35 4 13 15 Pependiculaity of oute ing outside suface with espect to the face SD Class 5 Class 4 Class 2 max Width deviation ΔCs All classes Unit: Width vaiation VCs Class 5 Class 4 Class 2 max 8 8 9 1 1 4 4 5 5 5 1.5 1.5 2.5 2.5 2.5 Identical to ΔBs elative to d on the same beaing. 5 6 8 8 8 2.5 3 4 5 5 1.5 1.5 2.5 2.5 2.5 11 13 13 7 8 1 4 5 7 1 11 13 7 7 8 4 5 7 15 18 2 15 18 2 213

NTN Main Spindle Beaings 6 Radial intenal cleaance of cylindical olle beaings Non-intechangeable adial intenal cleaance Two types of adial intenal cleaance ae available: non-intechangeable adial intenal cleaance fo which the combination of oute ing and inne ing cannot be changed; and intechangeable adial intenal cleaance that allows fo diffeent oute ing and inne ing combination. The cleaances listed ae common to both double-ow and the single-ow cylindical olle beaings. Fo machine components including highpecision machine tool main spindle, beaings with nonintechangeable adial intenal cleaance and a small cleaance ange ae used. If a double-low tapeed boe beaing is used and the desied mounted intenal cleaance is close to zeo, use of cleaance in the ange between C9NA and CINA is ecommended. Cylindical boe beaings with non-intechangeable adial intenal cleaance ae also available. Fo details, contact NTN Engineeing. Table 1.4 Cylindical boe beaings Unit: Nominal boe diamete Cylindical boe beaing d 1 ove incl. min max min max min max 24 3 4 5 65 8 1 12 14 16 18 2 225 25 28 315 355 4 45 3 4 5 65 8 1 12 14 16 18 2 225 25 28 315 355 4 45 5 5 5 5 5 1 1 1 15 15 15 2 2 25 25 3 3 35 45 5 1 12 15 15 2 25 25 3 35 35 4 45 5 55 6 65 75 85 95 1 12 15 15 2 25 25 3 35 35 4 45 5 55 6 65 75 85 95 25 25 3 35 4 45 5 6 65 75 8 9 1 11 12 135 15 17 19 1 The code fo nomal intenal cleaance is NA. Ex: N16HSNA 25 25 3 35 4 45 5 6 65 75 8 9 1 11 12 135 15 17 19 35 4 45 5 6 7 8 9 1 11 12 135 15 165 18 2 225 255 285 Table 1.5 Tapeed boe beaings Nominal boe diamete d 2 2 Tapeed boe beaing 2 ove incl. min max min max min max min max Unit: 1 min max 24 3 4 5 65 8 1 12 14 16 18 2 225 25 28 315 355 4 45 3 4 5 65 8 1 12 14 16 18 2 225 25 28 315 355 4 45 5 5 5 5 5 1 1 1 15 15 15 2 2 25 25 3 3 35 45 5 1 12 15 15 2 25 25 3 35 35 4 45 5 55 6 65 75 85 95 1 1 1 1 15 2 2 25 3 3 3 35 4 4 45 45 5 6 7 2 2 2 2 3 35 35 4 45 45 5 55 65 65 75 75 9 1 115 1 12 15 15 2 25 25 3 35 35 4 45 5 55 6 65 75 85 95 25 25 3 35 4 45 5 6 65 75 8 9 1 11 12 135 15 17 19 25 25 3 35 4 45 5 6 65 75 8 9 1 11 12 135 15 17 19 35 4 45 5 6 7 8 9 1 11 12 135 15 165 18 2 225 255 285 4 45 5 55 7 8 95 15 115 125 14 155 17 185 25 225 255 285 315 5 55 65 75 9 15 12 135 15 165 18 2 215 24 265 295 33 37 41 1 The code fo nomal intenal cleaance is "NA". Ex: N16HSKNA 2 Intenal cleaances C9NA, CNA and C1NA apply to beaings of JIS class 5 o highe. 214

NTN Main Spindle Beaings Intechangeable adial intenal cleaance (cylindical boe) Table 1.6 Nominal boe diamete d incl. (Nomal) Unit: ove min max min max min max 24 3 4 5 65 8 1 12 14 16 18 2 225 25 28 315 355 4 45 3 4 5 65 8 1 12 14 16 18 2 225 25 28 315 355 4 45 5 5 5 1 1 15 15 15 2 25 35 45 45 55 55 65 1 11 11 25 3 35 4 45 5 55 6 7 75 9 15 11 125 13 145 19 21 22 2 25 3 4 4 5 5 6 7 75 9 15 11 125 13 145 19 21 22 45 5 6 7 75 85 9 15 12 125 145 165 175 195 25 225 28 31 33 35 45 5 6 65 75 85 1 115 12 14 16 17 19 2 225 28 31 33 6 7 8 9 1 11 125 145 165 17 195 22 235 26 275 35 37 41 44 Adjustment of cleaance in tapeed boe beaings Mounted intenal cleaance of a tapeed boe beaing can be adjusted by contolling the dive-up of the tapeed boe onto the shaft. Two types of adjusting methods aea available: epeated adjustment of space width and adjustment with using a mounted intenal cleaance gauge. The cleaance gauge is convenient fo mass-poduction. Refe to "6. Handling of Beaings, 7 Cleaance adjustment fo cylindical olle beaing, measuement with mounted intenal cleaance gage" in the Technical Data section. 215

NTN Main Spindle Beaings 7 Recommended fit of high-pecision cylindical olle beaings In ode to maintain the high pecision of a pecision beaing unde dmn value is lowe than.75 1 6 the fits listed in Tables 1.7 and 1.8 ae ecommended (dmn: pitch cicle diamete acoss olling elements [mm] multiplied by speed [min -1 ]). When the dmn value is lage than.75 1 6 (dmn value.75 1 4 ), consult NTN Engineeing about the ecommended fit. Expansion of the inne ing due to centifugal foce must be consideed when detemining shaft fit. Table 1.7 Fit with shaft Unit: Table 1.8 Fit with housing Unit: Nominal boe diamete d ove incl. Fit between inne ing and shaft Nominal boe diamete D ove incl. Fit between oute ing and housing 18 3 5 3 5 8 4T 5T 1T6T 3 5 8 5 8 12 3T 4T 4T 8 12 18 12 18 25 1T6T 2T8T 2T8T 12 15 18 15 18 25 5T 5T 6T 25 315 315 4 Note 1: Taget the median value. T: Tight (Intefeence) fit Not applicable to tapeed boe beaings 3T1T 4T11T 25 315 4 Note 1: Taget the median value. T: Tight (Intefeence) fit 315 4 5 7T 8T 9T Fit of tapeed boe beaings When fitting a tapeed boe beaing onto a shaft, caefully and thooughly adjust the fit of the tapeed boe to the shaft to maintain high pecision of the beaing. Fo details of tape angle adjustment efe to "6. Handling of Beaings, 8 Cylindical olle beaing and main spindle tape angle" in the Technical Data section. 216

NTN Main Spindle Beaings 8 Recommended lubication specifications Cylindical olle beaings ae usually used with gease lubication o ai-oil lubication. Recommended lubication specifications ae descibed below. Gease lubication Recommended band of gease Refe to "7. Lubication of Beaings, 1 Gease lubication" in the Technical Data section. Recommended gease fill 1% of the capacity shown in the dimension tables Recommended gease packing method Refe to "6. Handling of Beaings, 1 Cleaning and filling with gease" in the Technical Data section. Ai-oil lubication Recommended location of nozzle Refe to "7. Lubication of Beaings, 2 Ai-oil lubication" in the Technical Data section. Recommended specifications of nozzle Nozzle boe diamete.: Fom 1 to 1.5 mm Numbe of nozzles: One nozzle fo each beaing, depth of nozzle boe should be fou to six times the nozzle diamete. Recommended specifications of ai-oil Oil type: Spindle oil Viscosity gade: ISO VG fom 1 to 32 (32 is pefeable) Table. 1.9 Ai and oil amount Beaing type NN3 NN3HS N1HS N1HSRT6 NN3HST6 NN3HSRT6 N1HSL dmn value (1 6 ) Ove Incl. 1. 1. 1.5 Recommended ai consumption NR/min 1.5 2.3 5.24 34.2 2.3 Oil amount pe shot cm 3 Lubication inteval min NR/min (Nomal lite/minute)... NR means the volume of ai at C and 1 atmosphee. 8 5 1 Oil consumption cm 3 /h.15.24 1.7 15.8.12 24 217

NTN Main Spindle Beaings 9 Ulta high speed double ow cylindical olle beaings NN3HSRT6 type NN3HSRT6 ulta high speed double ow cylindical olle beaings have highe opeating speed with the same level of igidity and capacity as the conventional seies. Beaing design Featues 1. Optimized intenal design to ealize high speed and low tempeatue ise. 2. Molded PEEK cage is used fo high speed unde gease & ai-oil lubication and gease life. Fig. 1.4 NN3HSRT6 type Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 NN3HSRT6 Gease lubication Ai-oil lubication Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine fo which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline and contact NTN. Cage design Cage is made of PEEK which is vey light and stong. (Photo 1.1) Smalle defomation by the centifugal foce is ealized by the lighten cage mateial and unpoved design High speed opeation is by the cage design impovement. Gease life is extended by gease pocket in the cage. Photo 1.1 PEEK cage 218

NTN Main Spindle Beaings High speed test dmn value of 1. million unde gease lubication and 1.75 million unde ai-oil lubication ae ealized by the optimized intenal design. (Fig 1.5, 1.6) Test conditions Beaing Speed Mounted adial cleaance Lubication Gease type Jacket cooling NN32HSRT6K NN32HST6K NN32HSK (11537) 8 min -1 5 m Gease lubication MP-1 Yes Test conditions Beaing Speed Mounted adial cleaance Lubication Oil Ai Jacket cooling NN32HSRT6K NN32HST6K NN32HSK (11537) 15 min -1 m Ai- Oil lubication.2 ml/1shot Oil shot inteval: 2min 3 NL/min Yes 25 35 OR tempeatue ise C 2 15 1 5 NN32HSRT6K NN32HST6K NN32HSK OR tempeatue ise C 3 25 2 15 1 5 NN32HSRT6K NN32HST6K NN32HSK 2 4 6 8 Speedmin -1 5 1 15 Speedmin -1.25.5.75 1. dmn value 1 6.5 1. 1.5 dmn value 1 6 Fig. 1.5 Compaison of tempeatue ise (gease) Fig. 1.6 Compaison of tempeatue ise (ai- oil) Gease life Ove 85 hous continuous opeation unde gease lubication is ealized by the impoved cage design at dmn value of 1. million. (Fig. 1.7) Test conditions 15h Duation, h ove 138h Moe than 9 times Beaing Speed Mounted adial cleaance Lubication Gease type Jacket cooling NN32HSRT6K NN32HSK (11537) 8 min -1 5 m Gease lubication MP-1 Yes Fig. 1.7 Compaison of gease life 219

NTN Main Spindle Beaings! Ulta high-speed single ow cylindical olle beaings N1HSRT6 type N1HSRT6 type cylindical olle beaings have been designed fo high-speed opeation. Beaing specification Featues 1. Optimized intenal design allows high speed opeation and limits tempeatue incease. 2. Special esin cage is suitable fo high-speed opeation. Fig. 1.8 N1HSRT6 type Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 N1HSRT6 Gease lubication Ai-oil lubication Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine fo which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline and contact NTN. Simplified main spindle configuation / adoption of simplified lubication system Due to an optimized intenal stuctue, the N1HSR type beaings can eliably un at a highe speed with gease lubication. The gease lubication system geatly contibutes to eduction in pollution of the suounding envionments by vitually eliminating oil mist (Fig. 1.9). Simplified main spindle configuation / simplified main spindle ea stuctue N1HSR (N1HSL) type high-speed cylindical olle beaings can eplace angula contact ball beaing on the ea side of the main spindle. This aangement deceases the numbe of beaing ows (two ows to one ow) and eliminates the ball slide mechanism, geatly contibuting to simplification of the ea stuctue (Fig. 1.1). Ai-oil lubication Gease lubication w/ ball slide mechanism w/o ball slide mechanism Capable of eplacing ai-oil lubicated beaings up to dmn value of 1,15,. Fig. 1.9 Modification of lubication system Capable of eplacing angula contact ball beaings up to dmn value of 2,3, [ai-oil lubication] o 1,15, [gease lubication]. Fig. 1.1 Simplified main spindle ea stuctue 22

NTN Main Spindle Beaings High-speed opeation test with gease lubication Due to an optimized intenal design, the N1HSR type is capable of high-speed opeation with dmn value of 1.15 million [gease lubication] o 2.3 million [ai-oil lubication] (Figs. 1.11, 1.12, 1.13, 1.14). Test conditions Test beaing Shaft speed Mounted adial cleaance Lubication Jacket cooling N111HSRT6 N111HS (55918) 16 min -1 m Gease No Test conditions Test beaing Shaft speed Mounted adial cleaance Lubication Jacket cooling N111HSRT6 N111HS (55918) 16 min -1 m Gease Yes Tempeatue incease of oute ing C 2 18 16 14 12 1 8 6 4 2 2 4 6 8 1 12 14 16 Speedmin -1.5 1. dmn value 1 6 Tempeatue incease of oute ing C 1 9 8 7 6 5 4 3 2 1 2 4 6 8 1 12 14 16 Speedmin -1.5 1. dmn value 1 6 Fig. 1.11 High-speed test esults (gease lubication without oute case cooling) Fig. 1.12 High-speed test esults (gease lubication with oute case cooling) Test conditions Test beaing Shaft speed Mounted adial cleaance Lubication Oil consumption Ai consumption Jacket cooling N116HSRT6 N116HS (812522) 22 min -1 m Ai-oil lubication.2 ml/shot (oil shot intevals, 5 min) 4 NL/min No Test conditions Test beaing Shaft speed Mounted adial cleaance Lubication Oil consumption Ai consumption Jacket cooling N116HSRT6 N116HS (812522) 22 min -1 m Ai-oil lubication.2 ml/shot (oil shot intevals, 5 min) 4 NL/min Yes Tempeatue incease of oute ing C 5 4 3 2 1 Tempeatue incease of oute ing C 5 4 3 2 1 5 1 15 2 25 Speedmin -1.5 1. 1.5 2. 2.5 dmn value 1 6 5 1 15 2 25 Speedmin -1.5 1. 1.5 2. 2.5 dmn value 1 6 Fig. 1.13 High-speed test esults (ai-oil lubication without jacket cooling) Fig. 1.14 High-speed test esults (ai-oil lubication with jacket cooling) 221

NTN Main Spindle Beaings!1 Eco-fiendly ai-oil lubicated cylindical olle beaings N1HSLT6 type The eco-fiendly ai-oil lubicated N1HSLT6 type was developed by applying NTN's unique ecoconscious technology to the poven N1HSRT6 type beaing design. The N1HSLT6 type boasts limited emission of oil mist and educed ai and oil consumption. This impoves opeating envionments, saves enegy while allowing highe-speed machining opeation. Beaing specification Ai-oil Ai-oil Eco-fiendly nozzle Intenal specification of N1HSRT6 type Eco-fiendly specification Featues 1. Optimized intenal design allows high speed opeation and limits tempeatue incease. 2. Adoption of the eco-fiendly nozzle design has led to: Lowe noise level (up to 7 dba) 5% eduction in ai consumption 5% eduction in oil consumption. N1HS type (conventional beaing type) ULTAGE N1HSLT6 type NOTE) The N1HSLT6 type is deliveed as packed togethe with the space with the eco-fiendly nozzle. The beaing type code N1HSLT6 epesents the beaing pope, while a space code stands fo an eco-fiendly nozzle pope o a space having a built-in nozzle. Fo moe details, see 3 Beaing Designations. Fig. 1.15 N1HSLT6 type Pemissible speed ange dmn value 1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 N1HSLT6 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine fo which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline and contact NTN. High-speed unning test Even with deceased ai consumption and oil consumption, the N1HSL type beaings can eliably opeate at high speed of dmn 2.3 1 6 (Fig. 1.16, 1.17). Test conditions Test beaing Shaft speed Mounted adial cleaance Oil consumption Ai consumption Jacket cooling N116HSLT6 N116HS (812522) 22 min -1 m.2 ml/shot N116HS N116HSL N116HS N116HSL No 5 min intevals 1 min intevals 4 NL/min 2 NL/min Test conditions Test beaing Shaft speed Mounted adial cleaance Oil consumption Ai consumption Jacket cooling N116HSLT6 N116HS (812522) 23 min -1 m.2 ml/shot N116HS N116HSL N116HS N116HSL Yes 5 min intevals 1 min intevals 4 NL/min 2 NL/min Tempeatue incease of oute ing C 5 4 3 2 1 Tempeatue incease of oute ing C 5 4 3 2 1 222 5 1 15 2 25 Shaft speedmin -1.5 1. 1.5 2. 2.5 dmn value1 6 Fig. 1.16 Hgh-speed test esults (without Jacket cooling) 5 1 15 2 25 Shaft speedmin -1.5 1. 1.5 2. 2.5 dmn value1 6 Fig. 1.17 High-speed test esults (with Jacket cooling)

NTN Main Spindle Beaings 223

Main Spindle Beaings!2 Dimension tables fo double ow cylindical olle beaings Double ow cylindical olle beaings d 25 95mm B B D d FW d D Ew d d NNU Type Cylindical boe Tapeed boe NN Type Cylindical boe Tapeed boe Pat numbe Bounday Basic load atings Limiting speeds dimensions dynamic static dynamic static NNU Type NN Type mm kn kgf min -1 cylindical tapeed cylindical tapeed gease oil boe boe 1 boe boe 1 d D B s min 2 C Co C Co lubication lubication NN35 NN35K 25 47 16.6 25.8 3. 2 63 3 5 19 3 23 4 NN35HS NN35HSK 25 47 16.6 25.8 3. 2 63 3 5 22 6 31 1 NN36 NN36K 3 55 19 1 31. 37. 3 15 3 8 16 3 19 8 NN36HS NN36HSK 3 55 19 1 31. 37. 3 15 3 8 19 1 26 3 NN37 NN37K 35 62 2 1 38. 47.5 3 85 4 85 14 3 17 3 NN37HS NN37HSK 35 62 2 1 38. 47.5 3 85 4 85 16 7 23 1 NN38 NN38K 4 68 21 1 43.5 55.5 4 4 5 65 12 8 15 6 NN38HS NN38HSK 4 68 21 1 43.5 55.5 4 4 5 65 15 2 7 NN39 NN39K 45 75 23 1 52. 68.5 5 3 7 11 6 14 NN39HS NN39HSK 45 75 23 1 52. 68.5 5 3 7 13 6 18 7 NN31 NN31K 5 8 23 1 53. 72.5 5 4 7 4 1 7 13 NN31HS NN31HSK 5 8 23 1 53. 72.5 5 4 7 4 12 5 17 3 NN311 NN311K 55 9 26 1.1 69.5 96.5 7 5 9 85 9 6 11 6 NN311HS NN311HSK 55 9 26 1.1 69.5 96.5 7 5 9 85 11 2 15 5 NN312 NN312K 6 95 26 1.1 71. 12 7 25 1 4 9 1 9 NN312HS NN312HSK 6 95 26 1.1 71. 12 7 25 1 4 1 5 14 5 NN313 NN313K 65 1 26 1.1 75. 111 7 65 11 4 8 4 1 2 NN313HST6 NN313HST6K 65 1 26 1.1 72.5 17 7 4 1 9 9 9 13 6 NN313HSRT6 NN313HSRT6K 65 1 26 1.1 72.5 17 7 4 1 9 12 1 21 2 NN314 NN314K 7 11 3 1.1 94.5 143 9 65 14 6 7 7 9 3 NN314HST6 NN314HST6K 7 11 3 1.1 92. 137 9 35 14 9 12 4 NN314HSRT6 NN314HSRT6K 7 11 3 1.1 92. 137 9 35 14 11 19 3 NN315 NN315K 75 115 3 1.1 96.5 149 9 85 15 2 7 3 8 9 NN315HST6 NN315HST6K 75 115 3 1.1 96.5 149 9 85 15 2 8 5 11 8 NN315HSRT6 NN315HSRT6K 75 115 3 1.1 96.5 149 9 85 15 2 1 4 18 3 NN316 NN316K 8 125 34 1.1 116 179 11 8 18 2 6 8 8 3 NN316HST6 NN316HST6K 8 125 34 1.1 112 172 11 5 17 5 8 11 NN316HSRT6 NN316HSRT6K 8 125 34 1.1 112 172 11 5 17 5 9 7 17 1 NN317 NN317K 85 13 34 1.1 122 194 12 4 19 8 6 5 7 9 NN317HST6 NN317HST6K 85 13 34 1.1 118 187 12 1 19 1 7 6 1 5 NN317HSRT6 NN317HSRT6K 85 13 34 1.1 118 187 12 1 19 1 9 3 16 3 NN318 NN318K 9 14 37 1.5 143 228 14 6 23 2 6 7 3 NN318HST6 NN318HST6K 9 14 37 1.5 143 228 14 6 23 2 7 1 9 7 NN318HSRT6 NN318HSRT6K 9 14 37 1.5 143 228 14 6 23 2 8 6 15 2 NN319 NN319K 95 145 37 1.5 146 238 14 9 24 2 5 8 7 1 A beaing numbe with suffix K indicates a tapeed-boe beaing (tape atio 1/12). 2 Minimum allowable value fo cone adius dimension. 224

Main Spindle Beaings a a a a a Da dc da dd Db da Db Db da db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Dimensions Abutment and fillet dimensions Mass Intenal kg (appox.) fee space mm mm NNU Type NN Type cm 3 da db dc dd Da Db as cylindical tapeed cylindical tapeed NN Fw Ew min min max min max max min max boe boe boe boe Type 41.3 29 3 43 42.6.124.121 3.72 41.3 29 3 43 42.6.124.121 3.72 48.5 35 36.5 5 49 1.199.193 6.38 48.5 35 36.5 5 49 1.199.193 6.38 55 4 41.5 57 56 1.242.235 8.9 55 4 41.5 57 56 1.242.235 8.9 61 45 47 63 62 1.312.33 9.68 61 45 47 63 62 1.312.33 9.68 67.5 5 52 7 69 1.45.393 13.3 67.5 5 52 7 69 1.45.393 13.3 72.5 55 57 75 74 1.433.419 14.6 72.5 55 57 75 74 1.433.419 14.6 81 61.5 63.5 83.5 82 1.651.631 2.5 81 61.5 63.5 83.5 82 1.651.631 2.5 86.1 66.5 68.5 88.5 87 1.74.683 21.1 86.1 66.5 68.5 88.5 87 1.74.683 21.1 91 71.5 73.5 93.5 92 1.76.74 22.2 91 71.5 73.5 93.5 92 1.69.66 21.4 91 71.5 73.5 93.5 92 1.69.66 21.4 1 76.5 79 13.5 11 1 1.4 1.1 33. 1 76.5 79 13.5 11 1.99.96 3.4 1 76.5 79 13.5 11 1.99.96 3.4 15 81.5 84 18.5 16 1 1.14 1.11 35. 15 81.5 84 18.5 16 1 1.5 1.2 31.2 15 81.5 84 18.5 16 1 1.5 1.2 31.2 113 86.5 89.5 118.5 114 1 1.52 1.47 45. 113 86.5 89.5 118.5 114 1 1.43 1.38 43. 113 86.5 89.5 118.5 114 1 1.43 1.38 43. 118 91.5 84.5 123.5 119 1 1.61 1.56 48.8 118 91.5 84.5 123.5 119 1 1.51 1.46 44.4 118 91.5 84.5 123.5 119 1 1.51 1.46 44.4 127 98 11 132 129 1.5 2.7 2.1 64.1 127 98 11 132 129 1.5 1.97 1.91 57.6 127 98 11 132 129 1.5 1.97 1.91 57.6 132 13 16 137 134 1.5 2.17 2.1 67. 225

Main Spindle Beaings Double ow cylindical olle beaings d 1 19mm B B D d FW d D Ew d d NNU Type Cylindical boe Tapeed boe NN Type Cylindical boe Tapeed boe Pat numbe Bounday Basic load atings Limiting speeds dimensions dynamic static dynamic static NNU Type NN Type mm kn kgf min -1 cylindical tapeed cylindical tapeed gease oil boe boe 1 boe boe 1 d D B s min 2 C Co C Co lubication lubication NNU492 NNU492K NN492 NN492K 1 14 4 1.1 131 26 13 3 26 5 6 7 2 NN32 NN32K 1 15 37 1.5 153 256 15 6 26 1 5 6 6 7 NN32HST6 NN32HST6K 1 15 37 1.5 149 247 15 2 25 2 6 5 9 NN32HSRT6 NN32HSRT6K 1 15 37 1.5 149 247 15 2 25 2 8 14 NNU4921 NNU4921K NN4921 NN4921K 15 145 4 1.1 133 268 13 5 27 4 5 7 6 9 NN321 NN321K 15 16 41 2 198 32 2 2 33 5 3 6 4 NN321HST6 NN321HST6K 15 16 41 2 198 32 2 2 33 6 2 8 5 NN321HSRT6 NN321HSRT6K 15 16 41 2 198 32 2 2 33 7 1 11 3 NNU4922 NNU4922K NN4922 NN4922K 11 15 4 1.1 137 284 14 28 9 5 5 6 6 NN322 NN322K 11 17 45 2 229 375 23 3 38 5 6 NN322HST6 NN322HST6K 11 17 45 2 229 375 23 3 38 5 8 8 NN322HSRT6 NN322HSRT6K 11 17 45 2 229 375 23 3 38 6 7 1 6 NNU4924 NNU4924K NN4924 NN4924K 12 165 45 1.1 183 36 18 7 37 5 6 NN324 NN324K 12 18 46 2 233 39 23 7 4 4 6 5 6 NN324HST6 NN324HST6K 12 18 46 2 226 38 23 1 38 5 5 4 7 5 NN324HSRT6 NN324HSRT6K 12 18 46 2 226 38 23 1 38 5 6 2 9 9 NNU4926 NNU4926K NN4926 NN4926K 13 18 5 1.5 22 44 22 4 45 4 6 5 5 NN326 NN326K 13 2 52 2 284 475 29 48 5 4 2 5 1 NN326HST6 NN326HST6K 13 2 52 2 284 475 29 48 5 4 9 6 8 NN326HSRT6 NN326HSRT6K 13 2 52 2 284 475 29 48 5 5 7 9 NNU4928 NNU4928K NN4928 NN4928K 14 19 5 1.5 227 47 23 1 48 4 3 5 2 NN328 NN328K 14 21 53 2 298 515 3 5 52 5 4 4 8 NN328HST6 NN328HST6K 14 21 53 2 298 515 3 5 52 5 4 7 6 4 NNU493 NNU493K NN493 NN493K 15 21 6 2 345 69 35 7 5 3 9 4 8 NN33 NN33K 15 225 56 2.1 335 585 34 6 3 7 4 5 NN33HS NN33HSK 15 225 56 2.1 335 585 34 6 4 3 6 NNU4932 NNU4932K NN4932 NN4932K 16 22 6 2 355 74 36 5 75 5 3 7 4 5 NN332 NN332K 16 24 6 2.1 375 66 38 67 5 3 5 4 2 NN332HS NN332HSK 16 24 6 2.1 375 66 38 67 5 4 1 5 6 NNU4934 NNU4934K NN4934 NN4934K 17 23 6 2 36 765 37 78 3 6 4 3 NN334 NN334K 17 26 67 2.1 44 775 45 79 3 2 3 9 NNU4936 NNU4936K NN4936 NN4936K 18 25 69 2 46 965 46 5 98 5 3 2 3 8 NN336 NN336K 18 28 74 2.1 565 995 57 5 12 3 3 6 NNU4938 NNU4938K NN4938 NN4938K 19 26 69 2 475 1 3 48 5 15 3 3 6 NN338 NN338K 19 29 75 2.1 58 1 4 59 16 2 8 3 3 1 A beaing numbe with suffix K indicates a tapeed-boe beaing (tape atio 1/12). 2 Minimum allowable value fo cone adius dimension. 226

Main Spindle Beaings a a a a a Da dc da dd Db da Db Db da db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Dimensions Abutment and fillet dimensions Mass Intenal kg (appox.) fee space mm mm NNU Type NN Type cm 3 da db dc dd Da Db as cylindical tapeed cylindical tapeed NN Fw Ew min min max min max max min max boe boe boe boe Type 113 129 16.5 11 111 115 133.5 133.5 131 1 1.83 1.75 1.75 1.67 49.8 137 18 111 142 139 1.5 2.26 2.19 67.5 137 18 111 142 139 1.5 2.14 2.7 61.6 137 18 111 142 139 1.5 2.14 2.7 61.6 118 134 111.5 115 116 12 138.5 138.5 136 1 1.91 1.82 1.82 1.73 5.2 146 114 117 151 148 2 2.89 2.8 91.9 146 114 117 151 148 2 2.75 2.66 82.7 146 114 117 151 148 2 2.75 2.66 82.7 123 139 116.5 12 121 125 143.5 143.5 141 1 1.99 1.9 1.9 1.81 53.9 155 119 123 161 157 2 3.69 3.56 115 155 119 123 161 157 2 3.5 3.37 13 155 119 123 161 157 2 3.5 3.37 13 134.5 154.5 126.5 13 133 137 158.5 158.5 156.5 1 2.75 2.62 2.63 2.51 82.5 165 129 133 171 167 2 3.98 3.83 13 165 129 133 171 167 2 3.76 3.61 117 165 129 133 171 167 2 3.76 3.61 117 146 168 138 142 144 148 172 172 17 1.5 3.69 3.52 3.52 3.35 112 182 139 143 191 183 2 5.92 5.71 182 182 139 143 191 183 2 5.55 5.34 164 182 139 143 191 183 2 5.55 5.34 164 156 178 148 152 154 158 182 182 18 1.5 3.94 3.76 3.76 3.58 117 192 149 153 21 194 2 6.44 6.21 199 192 149 153 21 194 2 6.11 5.91 176 168.5 196.5 159 164 166 171 21 21 198.5 2 6.18 5.9 5.9 5.62 192 26 161 166 214 28 2 7.81 7.53 237 26 161 166 214 28 2 7.81 7.53 237 178.5 26.5 169 174 176 182 211 211 28.5 2 6.53 6.23 6.24 5.94 199 219 171 176 229 221 2 8.92 8.59 287 219 171 176 229 221 2 8.92 8.59 287 188.5 216.5 179 184 186 192 221 221 218.5 2 6.87 6.55 6.56 6.24 212 236 181 187 249 238 2 12.6 12.2 379 22 234 189 195 199 25 241 241 236 2 9.9 9.46 9.45 9.1 299 255 191 197 269 257 2 16.6 16. 478 212 244 199 25 29 215 251 251 246 2 1.4 9.94 9.93 9.47 33 265 21 27 279 267 2 18. 17.4 54 227

Main Spindle Beaings Double ow cylindical olle beaings d 2 5mm B B D d FW d D Ew d d NNU Type Cylindical boe Tapeed boe NN Type Cylindical boe Tapeed boe Pat numbe Bounday Basic load atings Limiting speeds dimensions dynamic static dynamic static NNU Type NN Type mm kn kgf min -1 cylindical tapeed cylindical tapeed gease oil boe boe 1 boe boe 1 d D B s min 2 C Co C Co lubication lubication NNU494 NNU494K NN494 NN494K 2 28 8 2.1 555 1 18 56 5 12 2 9 3 5 NN34 NN34K 2 31 82 2.1 655 1 17 66 5 119 2 6 3 1 NNU4944 NNU4944K NN4944 NN4944K 22 3 8 2.1 585 1 3 59 5 132 2 6 3 1 NN344 NN344K 22 34 9 3 815 1 48 83 151 2 3 2 8 NNU4948 NNU4948K NN4948 NN4948K 24 32 8 2.1 61 1 41 62 5 144 2 3 2 8 NN348 NN348K 24 36 92 3 855 1 6 87 163 2 2 2 6 NNU4952 NNU4952K NN4952 NN4952K 26 36 1 2.1 9 2 7 92 211 2 2 2 6 NN352 NN352K 26 4 14 4 1 6 1 99 18 23 2 1 2 5 NNU4956 NNU4956K NN4956 NN4956K 28 38 1 2.1 925 2 2 94 5 224 1 9 2 3 NN356 NN356K 28 42 16 4 1 8 2 8 11 212 1 8 2 1 NNU496 NNU496K NN496 NN496K 3 42 118 3 1 2 2 8 122 285 1 8 2 1 NN36 NN36K 3 46 118 4 1 33 2 56 135 261 1 6 2 NNU4964 NNU4964K NN4964 NN4964K 32 44 118 3 1 24 2 97 126 35 1 6 2 NN364 NN364K 32 48 121 4 1 35 2 67 138 272 1 5 1 8 NNU4968 NNU4968K 34 46 118 3 1 27 3 15 13 32 1 5 1 8 NN368 NN368K 34 52 133 5 1 62 3 2 165 325 1 5 1 8 NNU4972 NNU4972K 36 48 118 3 1 29 3 25 131 33 1 5 1 8 NN372 NN372K 36 54 134 5 1 65 3 3 169 34 1 4 1 6 NNU4976 NNU4976K 38 52 14 4 1 63 4 5 167 415 1 4 1 6 NN376 NN376K 38 56 135 5 1 69 3 45 172 355 1 3 1 5 NNU498 NNU498K 4 54 14 4 1 69 4 3 172 435 1 3 1 5 NN38 NN38K 4 6 148 5 2 4 4 15 28 42 1 2 1 4 NNU4984 NNU4984K 42 56 14 4 1 74 4 5 177 46 1 2 1 5 NN384 NN384K 42 62 15 5 2 8 4 3 212 44 1 1 1 4 NNU4988 NNU4988K 44 6 16 4 2 15 5 55 219 565 1 1 1 4 NN388 NN388K 44 65 157 6 2 42 5 1 247 52 1 1 1 3 NNU4992 NNU4992K 46 62 16 4 2 22 5 85 226 595 1 1 1 3 NN392 NN392K 46 68 163 6 2 55 5 35 26 545 1 1 2 NNU4996 NNU4996K 48 65 17 5 2 28 5 9 233 6 1 1 2 NNU49/5 NNU49/5K 5 67 17 5 2 36 6 2 24 635 1 1 2 1 A beaing numbe with suffix K indicates a tapeed-boe beaing (tape atio 1/12). 2 Minimum allowable value fo cone adius dimension. 228

Main Spindle Beaings a a a a a Da dc da dd Db da Db Db da db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Dimensions Abutment and fillet dimensions Mass Intenal kg (appox.) fee space mm mm NNU Type NN Type cm 3 da db dc dd Da Db as cylindical tapeed cylindical tapeed NN Fw Ew min min max min max max min max boe boe boe boe Type 225 261 211 218 222 228 269 269 264 2 14.7 14. 14. 13.3 437 282 211 218 299 285 2 21.6 2.8 649 245 281 231 238 242 248 289 289 284 2 15.9 15.2 15.2 14.5 485 31 233 24 327 313 2.5 29.3 28.2 877 265 31 251 258 262 269 39 39 34 2 17.2 16.4 16.4 15.6 518 33 253 261 347 333 2.5 32.8 31.6 973 292 336 271 279 288 296 349 349 339 2 29.6 28.3 28.3 27. 85 364 276 285 384 367 3 47.4 45.8 1 37 312 356 291 299 38 316 369 369 359 2 31.6 3.2 3.2 28.8 897 384 296 35 44 387 3 51.1 49.3 1 5 339 391 313 323 335 343 47 47 394 2.5 48.6 46.4 46.4 44.2 1 36 418 316 326 444 421 3 7.8 68.6 2 359 411 333 343 355 363 427 427 414 2.5 51.4 49.1 49. 46.7 1 45 438 336 346 464 441 3 76.2 73.5 2 2 379 353 363 375 383 447 2.5 54.2 51.7 473 36 371 5 477 4 12 98.5 2 95 398 373 383 394 42 467 2.5 57. 54.4 493 38 391 52 497 4 17 13 3 6 425 396 48 42 43 54 3 84.5 8.6 512 4 411 54 516 4 113 19 3 34 445 416 428 44 45 524 3 88.2 84.1 547 42 432 58 551 4 146 141 4 23 465 436 448 46 47 544 3 92. 87.7 567 44 452 6 571 4 154 148 4 52 492 456 469 487 497 584 3 127 121 596 464 477 626 61 5 178 172 5 512 476 489 57 517 64 3 132 126 622 484 498 656 627 5 22 195 6 3 534 5 514 531 541 63 4 156 149 556 52 534 551 561 65 4 162 155 229

Main Spindle Beaings High speed single ow cylindical olle beaings d 3 8mm B 1 B 1 Ew d D Ew d D Cylindical boe Tapeed boe Pat numbe 1 3 Bounday dimensions Basic load atings Limiting speeds dynamic static dynamic static kn kgf min -1 cylindical tapeed gease oil boe boe d D B s min 2 1s min 2 Ew C Co C Co lubication lubication N16HS N16HSK 3 55 13 1.6 48.5 17.2 17.6 1 75 1 79 2 5 32 1 N17HS N17HSK 35 62 14 1.6 55 21.2 22.5 2 16 2 3 18 28 2 N18HS N18HSK 4 68 15 1.6 61 24.3 26.3 2 48 2 68 16 1 25 3 N19HS N19HSK 45 75 16 1.6 67.5 29.1 32.5 2 97 3 35 14 5 22 8 N11HS N11HSK 5 8 16 1.6 72.5 29.9 34.5 3 5 3 55 13 4 21 1 N111HS N111HSK 55 9 18 1.1 1 81 39. 46. 4 4 7 12 1 18 9 N112HS N112HSK 6 95 18 1.1 1 86.1 4. 48.6 4 1 4 95 11 3 17 7 N113HS N113HSK 65 1 18 1.1 1 91 42.5 53.5 4 3 5 45 1 6 16 6 N114HS N114HSK 7 11 2 1.1 1 1 52. 65.5 5 3 6 7 9 7 15 2 N115HS N115HSK 75 115 2 1.1 1 15 53. 69. 5 4 7 5 9 2 14 4 N116HS N116HSK 8 125 22 1.1 1 113 63.5 82. 6 45 8 4 8 5 13 4 1 A beaing numbe with suffix K indicates a tapeed-boe beaing (tape atio 1/12). 2 Minimum allowable value fo chamfe dimension o 1. 3 N1HS diffes fom standad N1 in intenal constuction. 23

Main Spindle Beaings 1a a Db da Db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Abutment and Mass Intenal Pat numbe fillet dimensions cylindical fee space mm boe cm 3 da Db as 1as kg cylindical tapeed min max min max max (appox.) boe boe 35 5 49 1.6.143 4.33 N16HS N16HSK 4 57 56 1.6.19 5.6 N17HS N17HSK 45 63 62 1.6.235 7.1 N18HS N18HSK 5 7 69 1.6.298 8.85 N19HS N19HSK 55 75 74 1.6.323 1.8 N11HS N11HSK 61.5 83.5 82 1 1.473 15. N111HS N111HSK 66.5 88.5 87 1 1.55 15.3 N112HS N112HSK 71.5 93.5 92 1 1.538 19. N113HS N113HSK 76.5 13.5 11 1 1.745 22. N114HS N114HSK 81.5 18.5 16 1 1.787 26.5 N115HS N115HSK 86.5 118.5 114 1 1 1.5 31.1 N116HS N116HSK 231

Main Spindle Beaings High speed single ow cylindical olle beaings d 85 16mm B 1 B 1 Ew d D Ew d D Cylindical boe Tapeed boe Pat numbe 1 3 Bounday dimensions Basic load atings Limiting speeds dynamic static dynamic static kn kgf min -1 cylindical tapeed gease oil boe boe d D B s min 2 1s min 2 Ew C Co C Co lubication lubication N117HS N117HSK 85 13 22 1.1 1 118 65. 86. 6 65 8 8 8 1 12 8 N118HS N118HSK 9 14 24 1.5 1.1 127 78.5 15 8 1 7 7 6 11 9 N119HS N119HSK 95 145 24 1.5 1.1 132 8.5 11 8 2 11 2 7 3 11 4 N12HS N12HSK 1 15 24 1.5 1.1 137 82. 115 8 4 11 7 7 11 N121HS N121HSK 15 16 26 2 1.1 146 19 149 11 1 15 2 6 6 1 4 N122HS N122HSK 11 17 28 2 1.1 155 126 173 12 8 17 7 6 2 9 8 N124HS N124HSK 12 18 28 2 1.1 165 128 182 13 1 18 5 5 8 9 1 N126HS N126HSK 13 2 33 2 1.1 182 156 22 15 9 22 4 5 3 8 3 N128HS N128HSK 14 21 33 2 1.1 192 164 24 16 8 24 4 5 7 8 N13HS N13HSK 15 225 35 2.1 1.5 26 185 273 18 8 27 8 4 7 7 3 N132HS N132HSK 16 24 38 2.1 1.5 219 26 35 21 31 5 4 4 6 9 1 A beaing numbe with suffix K indicates a tapeed-boe beaing (tape atio 1/12). 2 Minimum allowable value fo chamfe dimension o 1. 3 N1HS diffes fom standad N1 in intenal constuction. 232

Main Spindle Beaings 1a a Db da Db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Abutment and Mass Intenal Pat numbe fillet dimensions cylindical fee space mm boe cm 3 da Db as 1as kg cylindical tapeed min max min max max (appox.) boe boe 91.5 123.5 119 1 1 1.1 33.4 N117HS N117HSK 98 132 129 1.5 1 1.43 4. N118HS N118HSK 13 137 134 1.5 1 1.5 46.5 N119HS N119HSK 18 142 139 1.5 1 1.55 53.5 N12HS N12HSK 114 151 148 2 1 1.96 56.2 N121HS N121HSK 119 161 157 2 1 2.44 68.8 N122HS N122HSK 129 171 167 2 1 2.61 87.5 N124HS N124HSK 139 191 183 2 1 3.95 118 N126HS N126HSK 149 21 194 2 1 4.19 13 N128HS N128HSK 161 214 28 2 1.5 5.1 151 N13HS N13HSK 171 229 221 2 1.5 6.3 172 N132HS N132HSK 233

Main Spindle Beaings Ulta high-speed single ow cylindical olle beaings (ULTAGE seies) d 55 1mm B 1 B 1 Ew d D Ew d D Cylindical boe Tapeed boe Pat numbe 1 3 Bounday dimensions Basic load atings Limiting speeds dynamic static dynamic static kn kgf min -1 cylindical tapeed gease oil boe boe d D B s min 2 1s min 2 Ew C Co C Co lubication lubication N111HSRT6 N111HSRT6K 55 9 18 1.1 1 81 24.1 28.7 2 46 2 93 15 4 3 9 N112HSRT6 N112HSRT6K 6 95 18 1.1 1 86.1 23.8 28.9 2 43 2 95 14 4 28 9 N113HSRT6 N113HSRT6K 65 1 18 1.1 1 91 25.3 32 2 58 3 25 13 6 27 2 N114HSRT6 N114HSRT6K 7 11 2 1.1 1 1 29.2 37.5 2 98 3 85 12 4 24 7 N116HSRT6 N116HSRT6K 8 125 22 1.1 1 113 38 5 3 9 5 1 11 21 9 N118HSRT6 N118HSRT6K 9 14 24 1.5 1.1 127 48 64.5 4 9 6 55 9 7 19 5 N12HSRT6 N12HSRT6K 1 15 24 1.5 1.1 137 5.5 7.5 5 15 7 2 9 18 1 Minimum allowable value fo chamfe dimension o 1. 234

Main Spindle Beaings 1a a da Db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Abutment and Intenal Pat numbe fillet dimensions fee space mm cm 3 da Db as 1as cylindical tapeed min max min max max boe boe 61.5 83.5 82 1 1 15.7 N111HSRT6 N111HSRT6K 66.5 88.5 87 1 1 17. N112HSRT6 N112HSRT6K 71.5 93.5 92 1 1 17.9 N113HSRT6 N113HSRT6K 76.5 13.5 11 1 1 23.3 N114HSRT6 N114HSRT6K 86.5 118.5 114 1 1 31.6 N116HSRT6 N116HSRT6K 98 132 129 1.5 1 41.1 N118HSRT6 N118HSRT6K 18 142 139 1.5 1 45.1 N12HSRT6 N12HSRT6K 235

Main Spindle Beaings Eco-fiendly ulta high-speed single ow cylindical olle beaings (ULTAGE seies) Ai-oil lubication only d 55 1mm B 1 B 1 Ew d D Ew d D Cylindical boe Tapeed boe Pat numbe Bounday dimensions Basic load atings Limiting speeds dynamic static dynamic static kn kgf min -1 cylindical tapeed gease boe boe d D B s min 1 1s min 1 Ew C Co C Co lubication N111HSLT6 N111HSLT6K 55 9 18 1.1 1 81 24.1 28.7 2 46 2 93 3 9 N112HSLT6 N112HSLT6K 6 95 18 1.1 1 86.1 23.8 28.9 2 43 2 95 28 9 N113HSLT6 N113HSLT6K 65 1 18 1.1 1 91 25.3 32 2 58 3 25 27 2 N114HSLT6 N114HSLT6K 7 11 2 1.1 1 1 29.2 37.5 2 98 3 85 24 7 N116HSLT6 N116HSLT6K 8 125 22 1.1 1 113 38 5 3 9 5 1 21 9 N118HSLT6 N118HSLT6K 9 14 24 1.5 1.1 127 48 64.5 4 9 6 55 19 5 N12HSLT6 N12HSLT6K 1 15 24 1.5 1.1 137 5.5 7.5 5 15 7 2 18 1 Minimum allowable value fo chamfe dimension o 1. 2 Fo the details of space dimensions, please contact NTN Engineeing. 236

Main Spindle Beaings 1a a da Db Dynamic equivalent adial load P=F Static equivalent adial load Po=F Abutment and Pat numbe fillet dimensions mm da Db as 1as 2 cylindical tapeed min max min max max min boe boe 61.5 83.5 82 1 1 8.5 N111HSLT6 N111HSLT6K 66.5 88.5 87 1 1 8.5 N112HSLT6 N112HSLT6K 71.5 93.5 92 1 1 8.5 N113HSLT6 N113HSLT6K 76.5 13.5 11 1 1 1 N114HSLT6 N114HSLT6K 86.5 118.5 114 1 1 1 N116HSLT6 N116HSLT6K 98 132 129 1.5 1 1 N118HSLT6 N118HSLT6K 18 142 139 1.5 1 1 N12HSLT6 N12HSLT6K 237

Main Spindle Beaings!3Tape gage and intenal cleaance adjustment gage fo NTN pecision cylindical olle beaings As the need inceases fo machine tools of highe speed and pecision, a highe degee of pecision is equied of machine tool beaings. Fo a pecision beaing to exhibit its full pefomance, it must be installed coectly. In paticula, when a tapeed boe beaing is used, the coesponding tape on the shaft must be finished to a high degee of pecision. NTN ecommends the ing gage fo the tapeed shaft be finished to the same pecision as fo beaings. Note that the contact aea between tapeed faces should be 8% o geate. NTN also offes a plug gage that pemits veification of the pecision of the ing gage. Remembe that the adial intenal cleaance of a cylindical olle beaing needs to be coectly adjusted. Too lage a adial cleaance can diminish the pecision of the main spindle, while too small a adial cleaance can lead to abnomal heat geneation and pematue flaking of the beaing. To ensue adequate intenal cleaance, use a mounted intenal cleaance adjustment gage.!4dimension table fo tape gage Pat numbe Applicable beaing Bounday dimensions Mass (appox.) mm kg type type Plug gage Ring gage d d1 D B TB TA TANN36K TBNN36K N16HS NN36K 3 31.583 7 19.5.2 TANN37K TBNN37K N17HS NN37K 35 36.667 75 2.6.3 TANN38K TBNN38K N18HS NN38K 4 41.75 8 21.7.3 TANN39K TBNN39K N19HS NN39K 45 46.917 85 23.7.4 TANN31K TBNN31K N11HS NN31K 5 51.917 9 23.8.5 TANN311K TBNN311K N111HS NN311K 55 57.167 95 26.9.7 TANN312K TBNN312K N112HS NN312K 6 62.167 1 26 1..8 TANN313K TBNN313K N113HS NN313K 65 67.167 15 26 1.1.9 TANN314K TBNN314K N114HS NN314K 7 72.5 11 3 1.3 1.3 TANN315K TBNN315K N115HS NN315K 75 77.5 115 3 1.4 1.4 TANN316K TBNN316K N116HS NN316K 8 82.833 125 34 1.9 1.7 TANN317K TBNN317K N117HS NN317K 85 87.833 13 34 2. 1.9 TANN318K TBNN318K N118HS NN318K 9 93.83 14 37 2.6 2.4 TANN319K TBNN319K N119HS NN319K 95 98.83 145 37 2.7 2.6 TANN32K TBNN32K N12HS NN32K 1 13.83 15 37 2.8 2.8 TANN321K TBNN321K N121HS NN321K 15 18.417 16 41 3.6 3.5 TANN322K TBNN322K N122HS NN322K 11 113.75 165 45 4.1 4. TANN324K TBNN324K N124HS NN324K 12 123.833 17 46 4.1 4.7 TANN326K TBNN326K N126HS NN326K 13 134.333 18 52 4.8 6.4 TANN328K TBNN328K N128HS NN328K 14 144.417 19 53 5.2 7.4 TANN33K TBNN33K N13HS NN33K 15 154.667 21 56 7.2 8.4 TANN332K TBNN332K N132HS NN332K 16 165. 22 6 8.1 1 d1 B d Tape 1/12 Plug gage (TA) B Tape 1/12 D d d1 Ring gage (TB) 238

Main Spindle Beaings!5Dimension table fo mounted intenal cleaance adjustment gage Pat Applicable beaing Bounday numbe dimensions mm E D width B SBNN37-2 N17HSK NN37K 55 11 23 SBNN38-2 N18HSK NN38K 61 17 23 SBNN39-2 N19HSK NN39K 67.5 114 23 SBNN31-2 N11HSK NN31K 72.5 12 23 SBNN311-2 N111HSK NN311K 81 131 25 SBNN312-2 N112HSK NN312K 86.1 138 25 SBNN313-2 N113HSK NN313K 91 145 25 SBNN314-2 N114HSK NN314K 1 156 28 SBNN315-2 N115HSK NN315K 15 161 28 SBNN316-2 N116HSK NN316K 113 175 3 SBNN317-2 N117HSK NN317K 118 185 3 SBNN318-2 N118HSK NN318K 127 195 33 SBNN319-2 N119HSK NN319K 132 24 33 SBNN32-2 N12HSK NN32K 137 21 33 SBNN321-2 N121HSK NN321K 146 22 36 SBNN322-2 N122HSK NN322K 155 235 4 SBNN324-2 N124HSK NN324K 165 25 4 SBNN326-2 N126HSK NN326K 182 275 45 SBNN328-2 N128HSK NN328K 192 285 45 SBNN33-2 N13HSK NN33K 26 35 5 SBNN332-2 N132HSK NN332K 219 32 5 239

NTN Main Spindle Beaings

NTN Main Spindle Beaings Main Spindle Beaings 11. Angula Contact Ball Beaings fo Axial Loads CONTENTS 11. Angula Contact Ball Beaings fo Axial Loads 242 265 q Featues and types 242 w Standad cage types 243 e Beaing designations 243 Accuacy of double-diection angula contact thust ball beaings 244 t Accuacy of high-speed duplex angula contact ball beaings fo axial loads 245 y Basic peload 246 u Shaft and housing fits 247 i Recommended lubication specifications 247 o Angula contact ball beaings fo axial loads HTA U type 248! Dimension tables Double-diection angula contact thust ball beaings 25 Angula contact ball beaings fo axial loads 254 241

NTN Main Spindle Beaings 11. Angula Contact Ball Beaings fo Axial Loads 1 Featues and types NTN povides a ange of thust beaings fo the main spindles. This includes 5629 and 562 seies fo high axial igidity (contact angle 6 ) and HTA U(A) seies high-speed duplex angula contact ball beaings fo axial loads with optimized intenal design (contact angle 4, 3 ). These beaings ae used in conjunction with NN3, NN49, o NNU49 seies double-ow cylindical olle beaings (matched beaings must have the same boe and outside diamete). Table 11.1 Types of angula contact ball beaings fo axial loads 5629 and 562 seies HTAU (A)..DB, HTA9U (A)..DB seies Beaing type Initial contact angle 6 43 Cage mateial Featues High-stength machined bass cage These seies can withstand axial loads in both diections. Due to a lage contact angle, igidity in axial diections is enhanced. The stuctue of these beaings limits them to gease-lubicated vetical shaft applications. Molded esin, machined phenolic, high-stength machined coppe alloy cage These duplex angula contact ball beaing seies have simila design to the double-ow thust angula contact ball beaing seies, but ae diffeent in tems of thei widths (see the diagams below). Since thei contact angles ae lowe at 4 and 3, the seies boast highspeed capability. Howeve, thei axial igidity is less than double-ow thust angula contact ball beaings with 6 contact angle. A double-diection thust angula contact ball beaing can be eadily intechanged with a duplex angula contact ball beaing simply by eplacing space C with space D; the dimensions of the shaft and housing emain unchanged. A Space C Dimension A = Dimension 2B 2B Space D Intechangeability Double-diection thust angula contact ball beaing 5629 seies 562 seies High-speed duplex angula contact ball beaing fo axial loads HTA9UDB seies HTBUDB seies 242

NTN Main Spindle Beaings 2 Standad cage types Table 11.2 Standad cage of angula contact ball beaing fo axial loads Beaing seies 5629 562 HTA9U (A) HTAU (A) Machined phenol cage HTA92HTA938U HTA7HTA38U Machined bass cage 56292562964 562556264 HTA94UHTA964U HTA4UHTA64U Notes: Cage types may be subjected to change without notice. Fo details, contact NTN Engineeing. 3 Beaing designations 562 2M / GN P4 Toleance class code P5: NTN Class 5 P4: NTN Class 4 Intenal cleaance code GN: Nomal peload GM: Medium peload Boe code (efe to the dimensions tables) without M: Tapeed shaft small side diamete type (Ex.: 56221 mm boe) with M: Tapeed shaft lage side diamete type (Ex.: 562213 mm boe) Dimension seies code Beaing type 5S - HTA 2 U A T2 DB / GN P4L Toleance class code P5: JIS Class 5 P4: JIS Class 4 L: Oute ing outside diamete toleance fo axial load Intenal cleaance code GN: Nomal peload GM: Medium peload Duplex aangement code DB: back-to-back (double-ow) DTBT: tandem back-to-back (fou-ow) Cage code No code: Standad cage T2: Molded esin L1: Machined bass cage Contact angle code No code: 4 A: 3 Beaing seies: ULTAGE Nominal boe diamete (see the dimensions tables) Dimension seies code Beaing type Mateial code 5S: Mateial of olling element is ceamics No code: Beaing steel 243

NTN Main Spindle Beaings 4 Accuacy of double-diection angula contact thust ball beaings Table 11.3 Inne ings Nominal boe diamete d ove incl. 18 3 5 8 12 18 25 315 3 5 8 12 18 25 315 4 Single plane mean boe diamete deviation Δdmp o boe diamete deviation Δds Class 5 Class 4 high low high low 6 8 9 1 13 15 18 23 5 6 7 8 1 12 15 18 Pependiculaity of inne ing face with espect to the boe Sd Class 5 Class 4 max 8 8 8 9 1 11 13 15 4 4 5 5 6 7 8 9 Axial unout Sia Class 5 Class 4 max 5 5 6 6 8 8 1 13 3 3 5 5 6 6 8 1 Width vaiation VBs Class 5 Class 4 Class 5 Class 4 max high low 5 5 6 7 8 1 13 15 2.5 3 4 4 5 6 7 9 Unit: Beaing height deviation ΔTs 3 4 5 6 7 8 9 1 Table 11.4 Oute ings Nominal boe diamete D ove incl. 3 5 8 12 15 18 25 315 4 5 8 12 15 18 25 315 4 5 Single plane mean outside diamete deviation ΔDmp o outside diamete deviation ΔDs Class 5 Class 4 high low 3 4 5 6 6 75 9 11 12 4 5 6 75 75 9 15 125 14 Pependiculaity of oute ing outside suface with espect to the face SD Class 5 Class 4 max 8 8 9 1 1 11 13 13 15 4 4 5 5 5 7 8 1 13 Axial unout Sea Class 5 Class 4 max Identical to ΔBs elative to d of the same beaing. Unit: Width vaiation VCs Class 5 Class 4 max 5 6 8 8 8 1 11 13 15 2.5 3 4 5 5 7 7 8 1 244

NTN Main Spindle Beaings 5 Accuacy of high-speed duplex angula contact ball beaings fo axial loads Table 11.5 Inne ings Nominal boe diamete d ove incl. 18 3 5 8 12 15 18 25 315 3 5 8 12 15 18 25 315 4 Oveall width vaiation of assembled beaing ΔBs Class 5 Class 4 high low Single plane mean boe diamete deviation Δdmp Class 5 Class 4 1 high low high low 6 8 9 1 13 13 15 18 23 Width vaiation VBs Class 5 Class 4 max 5 6 7 8 1 1 12 14 16 Unit: Nominal boe diamete d ove incl. Single adial plane boe diamete vaiation Vdsp Diamete seies 9 Diamete seies Class 5 Class 4 Class 5 Class 4 max max 6 8 9 1 13 13 15 18 23 5 6 7 8 1 1 12 14 17 5 6 7 8 1 1 12 14 18 4 5 5 6 8 8 9 11 12 Mean boe Pependiculaity of diamete deviation inne ing face with Vdmp espect to the boe Sd Class 5 Class 4 Class 5 Class 4 max max 3 4 5 5 7 7 8 9 12 2.5 3 3.5 4 5 5 6 8 9 8 8 8 9 1 1 11 13 15 4 4 5 5 6 6 7 8 1 Unit: Axial unout Sia Class 5 Class 4 max 5 5 6 6 8 8 8 1 13 3 3 5 5 6 6 6 8 1 1The toleance of boe diamete deviation Δds is the same as the toleance of single plane mean boe diamete deviation Δdmp. 24 24 3 5 5 6 2.5 3 4 18 3 5 3 5 8 4 5 5 7 8 8 4 5 5 8 12 15 12 15 18 6 7 8 1 13 15 6 8 1 18 25 315 25 315 4 Table 11.6 Oute ings Nominal boe diamete D Single plane mean outside diamete deviation ΔDmp and outside diamete deviation ΔDs Class 5L o Class 4L 2 Class 5 ove incl. high low high low Class 4 2 high low Axial unout Sea Class 5 Class 4 All classes Oveall width vaiation of assembled beaing ΔCs All classes Unit: Width vaiation VCs Class 5 Class 4 max 3 5 8 12 15 18 5 8 12 15 18 25 25 3 36 43 43 5 36 43 51 61 61 7 7 9 1 11 13 15 6 7 8 9 1 11 8 1 11 13 14 15 5 5 6 7 8 1 Identical to Bs elative to d on the same beaing. 5 6 8 8 8 1 2.5 3 4 5 5 7 25 315 4 315 4 5 56 62 68 79 87 95 18 2 23 13 15 18 2 23 1 13 15 11 13 15 7 8 1 2The toleance of outside diamete deviation ΔDs to be applied to the Class 4 and Class 2 is same as the toleance of the mean outside diamete deviation Δdmp. Note that the Class 4 is applicable to diamete seies and 2, and the Class 2 is applicable to all the diamete seies. Note: This standad is the NTN standad. 245

NTN Main Spindle Beaings 6 Basic peload The initial intenal cleaance o initial peload must be selected with consideation of the lubicating method, maximum speed, and equied axial igidity. Although usage with nomal peload (GN) within the allowable speed ange is possible fo both gease lubication and ai-oil lubication, ask NTN Engineeing to ecommend the appopiate peload if axial igidity is equied and you want to inhibit tempeatue ise of the main spindle. The standad peloads ae summaized in Table 11.7. Table 11.7 Basic peload Unit: Boe numbe 5 6 7 8 9 1 11 12 13 14 15 16 17 18 19 2 21 22 24 26 28 3 32 34 36 38 4 44 48 52 56 6 64 5629 Nomal GN Medium GM 1 47 2 45 15 25 1 96 2 94 2 3 2 45 25 2 94 3 3 9 4 4 4 45 Nomal GN 562 HTA9UDB HTA9UADB HTAUDB HTAUADB Medium GM 29436857 49 5 785 8 98 1 67 1 17 1 47 2 45 15 25 1 96 2 2 45 25 2 94 3 3 9 5 9 4 6 3 9 4 957 35754 3 25 33 3 9 4 4 4 45 5 9 6 Nomal GN 98 1 1 27 13 1 96 2 3 45 35 3 9 4 4 9 5 Medium GM 1 67 17 2 45 25 3 45 35 5 9 6 6 85 7 8 85 9 5 9 11 8 61 2 Nomal GN 685 7 98 1 1 27 13 1 77 18 Medium GM 1 27 13 1 96 2 2 45 25 3 45 35 Nomal GN 39 4 685 7 98 1 1 47 15 1 96 88591 77182 2 94 3 3 9 4 4 9 5 2 45254 95 Medium GM 685 7 1 27 13 1 57 16 1 96 2 2 45 25 3 45 35 5 4 55 7 35 75 9 3 95 Nomal GN Medium GM 147 15 294 3 49 5 59 6 885 9 98 1 1 47 15 2 45 25 3 45 35 294 3 59 6 885 9 1 47 15 1 96 2 2 45 25 3 45 35 4 9 5 6 85 7 6 85 12 7 7 1 3 3 9 7 85 4 8 8 85 15 7 9 1 6 5 9 11 8 1 8 17 7 61 2 1 11 8 Boe numbe 5 6 7 8 9 1 11 12 13 14 15 16 17 18 19 2 21 22 24 26 28 3 32 34 36 38 4 44 48 52 56 6 64 246

NTN Main Spindle Beaings 7 Shaft and housing fits Fits given in Table 11.8 ae ecommended fo angula contact ball beaings fo axial loads. To maintain high accuacy, povision of intefeence between the shaft and the boe of inne ing is essential. The fit of the housing and beaing should be same as that fo cylindical olle beaings, since an angula contact ball beaing is nomally used togethe with a cylindical olle beaing. Checking concenticity of outside diamete of oute ing afte beaing Contolling concenticity of oute ing assembly is necessay fo eduction of axial unout of the main spindle. Measue and contol the concenticity of oute ing shown in Fig. 11.1 and "6. Handling of Beaings, 2 Mounting" in the Technical Data section. Measuement of concenticity of oute ing Fig. 11.1 Concenticity Table 11.8 Fit to shaft Nominal boe diamete d ove incl. 2.5 1 18 3 5 8 12 18 1 18 3 5 8 12 18 25 Fit of inne ing to shaft 2T 2T 2.5T 3T 3.5T 4T 5T 6T Unit: Note 1: Taget the median value. 2: Fo high-speed applications whee dmn value exceeds.75 1 6, the fit should be inceased.fo such an aangement, consult NTN Engineeing. T: Tight (Intefeence) fit 8 Recommended lubication specifications Angula contact ball beaings fo axial loads ae usually used with gease lubication o ai-oil lubication. Recommended specifications of the lubication methods ae descibed below. Gease lubication Recommended band of gease Refe to "7. Lubication of Beaings, 1 Gease lubication" in the Technical Data section. Recommended gease filling amount dmn value.65 1 6 15% of the capacity shown in the dimensions tables dmn value >.65 1 6 12% of the capacity shown in the dimensions tables Recommended gease filling method Refe to "6. Handling of Beaings, 1 Cleaning and filling with gease" in the Technical Data section. Notes: High-stength machined bass cages ae used fo 5629/562 seies. Thus, if they ae used fo gease-lubicated vetical shafts, the cage on one side may hang onto the olling elements, possibly causing seizue. Use of the HTA seies with esin cages o oil lubication (including feeding of lubicating oil) is ecommended. Ai-oil lubication Recommended location of nozzle Refe to "7. Lubication of Beaings 2 Recommended location of nozzle fo ai-oil lubication" in the Technical Data section. Recommended specifications of nozzle Nozzle boe diamete : Fom 1 to 1.5 mm Numbe of nozzles: One nozzle fo each beaing, depth of nozzle boe should be fou to six times of nozzle boe diamete. Recommended specifications of ai-oil Oil type: Spindle oil Viscosity gade: ISO VG fom 1 to 32 (32 is pefeable) Table. 11.9 Ai and oil amount Beaing types HTA9 (A) HTA (A) 5S-HTA (A) dmn value 1 6 Ove Incl. 1. 1. 1.2 Oil amount Lubication Oil Recommended pe shot intevalsconsumption ai consumption ml min ml/h NL/min 8.23.3 24 5.36 NL/min (Nomal lite/minute) NL means the volume of ai at C and 1 atmosphee. 247

NTN Main Spindle Beaings 9 Angula contact ball beaings fo axial loads HTA U type HTA U type angula contact ball beaing has a highe limiting speed with the same igidity and loading capability as the conventional HTA seies. Beaings design Featues 1. Optimized intenal design to minimize the tempeatue ise especially at high speed ange. 2. Impoved molded nylon cage pocket design whee the ball contacts to have highe lubication pefomance unde gease o ai-oil lubication. Fig. 11.2 HTA U type Pemissible speed ange dmn value1 6.2.4.6.8 1. 1.2 1.4 1.6 1.8 2. 2.2 2.4 2.6 2.8 HTA9 U HTA U 4 3 4 3 Gease lubication Ai-oil lubication 5S-HTA U 4 4 3 3 Notes) Pemissible speed of each beaing (dmn value) vaies depending on the specifications of the machine fo which the beaing is used (moto dive system, cooling system, and constuction aound the beaing). Conside the optimal choice efeing to the above guideline and contact NTN. Axial igidity Axial igidity is at the same level as the conventional design. Data/Allowable axial load By eviewing the intenal stuctue, the allowable axial load has impoved ove HTA types by about 1.3 times with the contact angle of 3 and by about 1.2 times with the contact angle of 4. Axial displacementm Condition fo study HTA2UADBHTA2ADB Beaing HTA2UDBHTA2DB (11522.52 ow) [:3 ] 88 N Mounted peload [:4 ] 147 N 15 1 5 HTA U type HTA type 3 4 1 2 3 4 5 Axial loadkn Pemissible axial loadkn Condition fo study HTA2UADBHTA2ADB Beaing HTA2UDBHTA2DB (11522.52 ow) 1 8 6 4 2 71.3 53.5 3 31.9 HTA U type HTA type 25.7 4 Fig. 11.4 Compaison of pemissible axial load Fig. 11.3 Axial load and igidity 248

NTN Main Spindle Beaings High speed test dmn value of 1. million unde gease lubication and 1.25 million unde ai-oil lubication ae ealized by the optimized intenal design. (Fig.11.5 11.8) Test condition Beaing[:3 ] Speed Mounted peload Lubication Gease type Jacket coating 4 HTA2UADB HTA2ADB (11522.52 ows) 8 min -1 88 N Gease MP-1 w/, w/o Test condition HTA2UADB Beaing[:3 ] HTA2ADB (11522.52 ows) Speed 1 min -1 Mounted peload 88 N Lubication Ai- oil Oil.3 ml/1shot Oil shot inteval 5 min Ai 4 NL/min Jacket cooling w/, w/o 4 OR tempeatue ise 35 3 25 2 15 1 5 HTA2UA w/o jacket cooling HTA2UA w/ jacket cooling HTA2A w/o jacket cooling HTA2A w/ jacket cooling OR tempeatue ise 35 3 25 2 15 1 5 HTA2UA w/o jacket cooling HTA2UA w/ jacket cooling HTA2A w/o jacket cooling HTA2A w/ jacket cooling 2 4 6 8 Speedmin -1 25 5 75 1 Speedmin -1.25.5.75 1. dmn value 1 6 Fig. 11.5 Compaison of tempeatue ise (Gease, 3 ).25.5.75 1. 1.25 dmn value 1 6 Fig. 11.6 Compaison of tempeatue ise (Ai-oil, 3 ) Test condition HTA2UDB Beaing[:4 ] HTA2DB (11522.52 ows) Speed 6 min -1 Mounted peload 147 N Lubication Gease Gease type MP-1 Jacket coating w/, w/o Test condition HTA2UDB Beaing[:4 ] HTA2DB (11522.52 ows) Speed 75 min -1 Mounted peload 147 N Lubication Ai- oil Oil.3 ml/1shot Oil shot inteval 5 min Ai 4 NL/min Jacket cooling w/, w/o 3 3 OR tempeatue ise 25 2 15 1 5 HTA2U w/o jacket cooling HTA2U w/ jacket cooling HTA2 w/o jacket cooling HTA2 w/ jacket cooling OR tempeatue ise 25 2 15 1 5 HTA2U w/o jacket cooling HTA2U w/ jacket cooling HTA2 w/o jacket cooling HTA2 w/ jacket cooling 2 4 6 Speedmin -1 25 5 75 Speedmin -1.25.5.75 dmn value 1 6 Fig. 11.7 Compaison of tempeatue ise (Gease, 4 ).25.5.75 dmn value 1 6 Fig. 11.8 Compaison of tempeatue ise (Ai-oil, 4 ) 249

Main Spindle Beaings! Dimension tables fo angula contact ball beaings Double-diection angula contact thust ball beaings 5629 seies Contact angle 6 d 1 32mm T1 C 1 J d EW D Pat numbe Bounday dimensions Basic load atings Limiting speed Mass dynamic static dynamic static (appox.) d mm kn kgf min -1 kg small lage small lage gease oil small lage size size size size D T1 C s min 1 1s min 1 Ca Coa Ca Coa lubication lubication size size 56292 56292M 1 14 14 48 24 1.1.6 52. 179 5 3 18 2 3 2 4 2 2.4 1.8 562921 562921M 15 19 145 48 24 1.1.6 53.5 188 5 45 19 2 3 4 1 2.12 1.87 562922 562922M 11 114 15 48 24 1.1.6 54. 193 5 5 19 7 2 9 3 9 2.21 1.95 562924 562924M 12 124 165 54 27 1.1.6 65. 242 6 6 24 7 2 6 3 5 3.6 2.75 562926 562926M 13 134 18 6 3 1.5 1 75. 284 7 65 28 9 2 4 3 2 4.11 3.7 562928 562928M 14 144 19 6 3 1.5 1 76. 297 7 75 3 5 2 3 3 1 4.38 3.94 56293 56293M 15 155 21 72 36 2 1 17 41 1 9 41 5 2 1 2 8 6.88 6.2 562932 562932M 16 165 22 72 36 2 1 19 43 11 1 44 2 2 6 7.26 6.53 562934 562934M 17 175 23 72 36 2 1 111 45 11 3 46 1 9 2 5 7.64 6.88 562936 562936M 18 186 25 84 42 2 1 156 65 15 9 62 1 7 2 3 11.2 1 562938 562938M 19 196 26 84 42 2 1 157 625 16 63 5 1 7 2 2 11.7 1.5 56294 56294M 2 27 28 96 48 2.1 1.1 185 735 18 8 75 1 6 2 1 16.3 14.7 562944 562944M 22 227 3 96 48 2.1 1.1 19 795 19 4 81 1 4 1 9 17.7 16 562948 562948M 24 247 32 96 48 2.1 1.1 196 85 2 87 1 3 1 8 19 17 562952 562952M 26 269 36 12 6 2.1 1.1 261 1 13 26 6 116 1 2 1 6 32.9 29.6 562956 562956M 28 289 38 12 6 2.1 1.1 265 1 19 27 121 1 1 1 5 35 31.5 56296 56296M 3 31 42 144 472 3 1.1 335 1 51 34 5 154 1 1 4 55 49.5 562964 562964M 32 33 44 144 72 3 1.1 34 1 58 3 5 161 1 1 3 58.1 52.3 1 Minimum allowable value fo cone adius dimension o 1. 2 Maximum cicumscibed cicle diamete of balls. 25

Main Spindle Beaings 1a a Wo 4-do Db da Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Refeence Abutment and Pat numbe dimensions fillet dimensions mm mm da Db as 1as small lage J Ew 2 min max max max size size 126 129 114 134.5 1.6 56292 56292M 131 134 119 139.5 1.6 562921 562921M 136 139 124 144.5 1.6 562922 562922M 15 154.5 138 159.5 1.6 562924 562924M 163 168 15 173.5 1.5 1 562926 562926M 173 178 16 183.5 1.5 1 562928 562928M 19 196.5 174 22 2 1 56293 56293M 2 26.5 184 212 2 1 562932 562932M 21 216.5 194 222 2 1 562934 562934M 227 234 27 242 2 1 562936 562936M 237 344 217 252 2 1 562938 562938M 252 261 231 27 2 1 56294 56294M 272 281 251 29 2 1 562944 562944M 292 31 271 31 2 1 562948 562948M 328 336 299 35 2 1 562952 562952M 348 356 319 37 2 1 562956 562956M 384 391 349 41 2.5 1 56296 56296M 44 411 369 43 2.5 1 562964 562964M Dimensions of oil hole and oil goove unit: mm Nominal oute diamete D ove incl. Oil Oil goove hole width diamete Wo do 15 2 8 4 2 21 12 6 21 26 12 6 26 32 14 6 251

Main Spindle Beaings Double-diection angula contact thust ball beaings 562 seies Contact angle 6 d 25 32mm T1 C 1 J d EW D 252 Pat numbe Bounday dimensions Basic load atings Limiting speed Mass dynamic static dynamic static (appox.) d mm kn kgf min -1 kg small lage small lage gease oil small lage size size size size D T1 C s min 1 1s min 1 Ca Coa Ca Coa lubication lubication size size 5625 5625M 25 27 47 28 14.6.3 13.2 28.3 1 35 2 89 1 4 14.197.177 5626 5626M 3 32 55 32 16 1.6 14. 32.5 1 42 3 35 8 7 11 7.31.28 5627 5627M 35 37 62 34 17 1.6 19.7 48.5 2 1 4 95 7 7 1 3.394.35 5628 5628M 4 42 68 36 18 1.6 23.8 58.5 2 43 5 95 7 9 4.482.44 5629 5629M 45 47 75 38 19 1.6 26. 69. 2 65 7 6 2 8 3.65.54 5621 5621M 5 52 8 38 19 1.6 26.8 74. 2 73 7 55 5 7 7 7.638.59 56211 56211M 55 57 9 44 22 1.1.6 37. 99. 3 8 1 1 5 2 7.988.9 56212 56212M 6 62 95 44 22 1.1.6 37.5 13 3 85 1 5 4 9 6 5 1.6.96 56213 56213M 65 67 1 44 22 1.1.6 39. 111 3 95 11 3 4 6 6 1 1.8 1 56214 56214M 7 73 11 48 24 1.1.6 47.5 14 4 85 14 3 4 2 5 6 1.53 1.4 56215 56215M 75 78 115 48 24 1.1.6 49. 15 5 15 3 3 9 5 3 1.61 1.5 56216 56216M 8 83 125 54 27 1.1.6 57.5 178 5 85 18 2 3 7 4 9 2.2 2 56217 56217M 85 88 13 54 27 1.1.6 58. 184 5 95 18 8 3 5 4 7 2.31 2.1 56218 56218M 9 93 14 6 3 1.5 1 67.5 216 6 85 22 3 3 4 4 3.5 2.7 56219 56219M 95 98 145 6 3 1.5 1 68. 223 6 95 22 7 3 1 4 2 3.18 2.9 5622 5622M 1 14 15 6 3 1.5 1 68.5 229 7 23 4 3 4 3.32 3 56221 56221M 15 19 16 66 33 2 1 78.5 266 8 27 1 2 8 3 8 4.19 3.7 56222 56222M 11 114 17 72 36 2 1 96. 315 9 75 32 5 2 7 3 6 5.35 4.9 56224 56224M 12 124 18 72 36 2 1 98. 335 1 34 5 2 5 3 3 5.73 5.2 56226 56226M 13 135 2 84 42 2 1 139 46 14 2 47 2 3 3 1 8.58 7.6 56228 56228M 14 144 21 84 42 2 1 144 495 14 6 5 5 2 2 2 9 9.1 8.1 5623 5623M 15 155 225 9 45 2.1 1.1 147 525 15 53 5 2 2 7 11.2 1 56232 56232M 16 165 24 96 48 2.1 1.1 172 62 17 6 63 1 9 2 5 13.6 11.9 56234 56234M 17 175 26 18 54 2.1 1.1 22 735 2 6 75 1 8 2 4 18.5 16.5 56236 56236M 18 186 28 12 6 2.1 1.1 234 865 23 9 88 1 6 2 2 24.7 21.8 56238 56238M 19 196 29 12 6 2.1 1.1 236 89 24 1 91 1 6 2 1 25.5 23 5624 5624M 2 27 31 132 66 2.1 1.1 271 1 3 27 7 15 1 5 2 32.7 29.7 56244 56244M 22 227 34 144 72 3 1.1 335 1 27 34 129 1 3 1 8 42.8 38.5 56248 56248M 24 247 36 144 72 3 1.1 34 1 35 35 137 1 3 1 7 45.8 41.2 56252 56252M 26 269 4 164 82 4 1.5 45 1 71 41 5 174 1 1 1 5 67 6.3 56256 56256M 28 289 42 164 82 4 1.5 415 1 81 42 5 185 1 1 1 5 71.1 64 5626 5626M 3 31 46 19 95 4 1.5 475 2 17 48 5 221 1 1 3 12 91.8 562964 562964M 32 33 48 19 95 4 1.5 48 2 23 4 9 228 1 1 3 18 97.2 1 Minimum allowable value fo cone adius dimension o 1. 2 Maximum cicumscibed cicle diamete of balls.

Main Spindle Beaings 1a a Wo 4-do Db da Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Refeence Abutment and Pat numbe dimensions fillet dimensions mm mm da Db as 1as small lage J Ew 2 min max max max size size 4 41.3 33 44.6.3 5625 5625M 47 48.5 4 5.5 1.6 5626 5626M 53 55 45.5 57.5 1.6 5627 5627M 58.5 61 5 63.5 1.6 5628 5628M 65 67.5 56.5 7.5 1.6 5629 5629M 7 72.5 61.5 75.5 1.6 5621 5621M 78 81 67.5 84 1.6 56211 56211M 83 86.1 72.5 89 1.6 56212 56212M 88 91 77.5 94 1.6 56213 56213M 97 1 85 14 1.6 56214 56214M 12 15 9 19 1.6 56215 56215M 11 113 96.5 119 1.6 56216 56216M 115 118 12 124 1.6 56217 56217M 123 127 19 133.5 1.5 1 56218 56218M 128 132 114 138.5 1.5 1 56219 56219M 133 137 119 143.5 1.5 1 5622 5622M 142 146 127 152 2 1 56221 56221M 15 155 133 162 2 1 56222 56222M 16 165 143 172 2 1 56224 56224M 177 182 155 192 2 1 56226 56226M 187 192 165 22 2 1 56228 56228M 2 26 178 215 2 1 5623 5623M 212 219 189 23 2 1 56232 56232M 23 236 23 25 2 1 56234 56234M 248 255 219 27 2 1 56236 56236M 258 265 229 28 2 1 56238 56238M 274 282 243 3 2 1 5624 5624M 34 31 267 33 2.5 1 56244 56244M 322 33 287 35 2.5 1 56248 56248M 354 364 315 388 3 1.5 56252 56252M 374 384 335 48 3 1.5 56256 56256M 46 418 364 448 3 1.5 5626 5626M 426 438 384 468 3 1.5 562964 562964M Dimensions of oil hole and oil goove unit: mm Nominal oute diamete D ove incl. Oil Oil goove hole width diamete Wo do 5 4.5 2 5 8 6 3 8 15 8 4 15 2 12 6 2 21 12 6 21 26 14 6 26 32 16 8 253

Main Spindle Beaings Angula contact ball beaings fo axial loads (steel ball type) HTA9UA seies Contact angle 3 d 1 32mm 1 2B 1 D d d1 D2 2a Pat Bounday dimensions Basic load atings Static thust Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D 2B s min 1 1s min 1 Ca Coa Ca Coa lubication lubication HTA92UADB 1 14 36 1.1.6 4. 19 4 5 11 1 66. 6 75 8 3 1 4 HTA921UADB 15 145 36 1.1.6 41. 115 4 15 11 7 7. 7 15 8 1 HTA922UADB 11 15 36 1.1.6 41.5 118 4 2 12 72. 7 35 7 7 9 6 HTA924UADB 12 165 4.5 1.1.6 48. 14 4 9 14 3 87.5 8 9 7 8 8 HTA926UADB 13 18 45 1.5 1 57.5 173 5 85 17 6 13 1 5 6 5 8 1 HTA928UADB 14 19 45 1.5 1 57.5 177 5 85 18 16 1 8 6 1 7 6 HTA93UADB 15 21 54 2 1 8.5 243 8 2 24 8 143 14 6 5 6 6 9 HTA932UADB 16 22 54 2 1 82. 255 8 35 26 1 151 15 4 5 3 6 6 HTA934UADB 17 23 54 2 1 84. 268 8 55 27 3 159 16 2 5 6 3 HTA936UADB 18 25 63 2 1 127 4 12 9 41 239 24 4 4 7 5 8 HTA938UADB 19 26 63 2 1 129 42 13 2 43 252 25 7 4 4 5 6 HTA94UADB 2 28 72 2.1 1.1 152 5 15 5 51 35 31 4 2 5 2 HTA944UADB 22 3 72 2.1 1.1 156 535 15 9 54 5 33 33 5 3 8 4 8 HTA948UADB 24 32 72 2.1 1.1 16 57 16 3 58 35 35 5 3 6 4 5 HTA952UADB 26 36 9 2.1 1.1 21 745 21 4 76 46 47 3 2 4 HTA956UADB 28 38 9 2.1 1.1 216 795 22 81 49 5 3 3 8 HTA96UADB 3 42 18 3 1.1 276 1 2 28 1 14 61 62 2 8 3 5 HTA964UADB 32 44 18 3 1.1 28 1 6 28 5 18 635 65 2 6 3 3 1 Minimum allowable value fo cone adius dimension o 1. 254

Main Spindle Beaings 1as as dadb Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Load Intenal Mass Refeence Abutment and fillet dimensions Pat cente fee space dimensions numbe mm cm 3 kg mm mm Two ow Two ow da Db as 1as 2a (appox.) (appox.) d1 D2 min max max max 87.6 24.81 115.3 129.1 11 134 1.6 HTA92UADB 9.5 24.85 12.3 134.1 115 139 1.6 HTA921UADB 93.4 26.88 125.3 139.1 12 144 1.6 HTA922UADB 12.9 36 1.23 137.4 152.4 13 159 1.6 HTA924UADB 112.4 5 1.65 149.4 165.8 142 172.5 1.5 1 HTA926UADB 118.1 53 1.75 159.4 175.8 152 182.5 1.5 1 HTA928UADB 131.4 85 2.74 173.1 193.3 164 22.5 2 1 HTA93UADB 137.1 9 2.89 183.1 23.3 174 212.5 2 1 HTA932UADB 142.9 94 3.5 193.1 213.2 184 222.5 2 1 HTA934UADB 156.2 138 4.78 26.4 231.5 194 242.5 2 1 HTA936UADB 162. 144 5. 216.4 241.5 24 252.5 2 1 HTA938UADB 175.2 197 7. 23.6 258.2 217 27 2 1 HTA94UADB 186.7 213 7.6 25.6 277.9 237 29 2 1 HTA944UADB 198.3 229 8.15 27.6 297.9 257 31 2 1 HTA948UADB 224.7 378 14.3 298.9 331.6 277 35 2 1 HTA952UADB 236.3 43 15.2 318.9 351.4 297 37 2 1 HTA956UADB 262.7 675 23.5 347.1 385.2 32 41 2.5 1 HTA96UADB 274.2 715 24.8 367.1 45. 34 43 2.5 1 HTA964UADB 255

Main Spindle Beaings Angula contact ball beaings fo axial loads (steel ball type) HTA9U seies Contact angle 4 d 1 32mm 1 2B 1 D d d1 D2 2a Pat Bounday dimensions Basic load atings Static thust Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D 2B s min 1 1s min 1 Ca Coa Ca Coa lubication lubication HTA92UDB 1 14 36 1.1.6 47. 121 4 8 12 3 29.3 2 99 6 3 7 9 HTA921UDB 15 145 36 1.1.6 48.5 128 4 95 13 31. 3 15 6 7 6 HTA922UDB 11 15 36 1.1.6 49. 131 5 13 4 32. 3 25 5 8 7 3 HTA924UDB 12 165 4.5 1.1.6 57. 156 5 8 15 9 39. 4 5 3 6 7 HTA926UDB 13 18 45 1.5 1 68. 193 6 95 19 6 44.5 4 55 4 8 6 1 HTA928UDB 14 19 45 1.5 1 68. 197 6 95 2 1 46. 4 7 4 5 5 8 HTA93UDB 15 21 54 2 1 95.5 27 9 75 27 6 62.5 6 35 4 2 5 3 HTA932UDB 16 22 54 2 1 97.5 284 9 95 29 65.5 6 7 3 9 5 HTA934UDB 17 23 54 2 1 99.5 298 1 1 3 5 69. 7 5 3 8 4 8 HTA936UDB 18 25 63 2 1 15 445 15 3 45 5 14 1 6 3 5 4 4 HTA938UDB 19 26 63 2 1 153 47 15 6 48 11 11 2 3 3 4 2 HTA94UDB 2 28 72 2.1 1.1 18 555 18 4 56 5 134 13 7 3 1 4 HTA944UDB 22 3 72 2.1 1.1 185 595 18 9 6 5 145 14 8 2 9 3 7 HTA948UDB 24 32 72 2.1 1.1 19 635 19 4 64 5 155 15 8 2 7 3 4 HTA952UDB 26 36 9 2.1 1.1 25 83 25 4 84 5 23 2 7 2 4 3 1 HTA956UDB 28 38 9 2.1 1.1 257 885 26 2 9 5 218 22 2 2 3 2 9 HTA96UDB 3 42 18 3 1.1 325 1 13 33 5 115 266 27 1 2 1 2 6 HTA964UDB 32 44 18 3 1.1 33 1 18 34 12 279 28 4 2 2 5 1 Minimum allowable value fo cone adius dimension o 1. 256

Main Spindle Beaings 1as as dadb Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Load Intenal Mass Refeence Abutment and fillet dimensions Pat cente fee space dimensions numbe mm cm 3 kg mm mm Two ow Two ow da Db as 1as 2a (appox.) (appox.) d1 D2 min max max max 119.1 24.81 115.3 129. 11 134 1.6 HTA92UDB 123.3 24.85 12.3 134. 115 139 1.6 HTA921UDB 127.5 26.88 125.3 139. 12 144 1.6 HTA922UDB 14.3 36 1.23 137.4 152.3 13 159 1.6 HTA924UDB 153.1 5 1.65 149.4 165.7 142 172.5 1.5 1 HTA926UDB 161.5 53 1.75 159.4 175.7 152 182.5 1.5 1 HTA928UDB 178.7 85 2.74 173.1 193.2 164 22.5 2 1 HTA93UDB 187.1 9 2.89 183.1 23.2 174 212.5 2 1 HTA932UDB 195.5 94 3.5 193.1 213.3 184 222.5 2 1 HTA934UDB 212.7 138 4.78 26.4 231.5 194 242.5 2 1 HTA936UDB 221.1 144 5. 216.4 241.6 24 252.5 2 1 HTA938UDB 238.3 197 7. 23.6 258.2 217 27 2 1 HTA94UDB 255.1 213 7.6 25.6 278.2 237 29 2 1 HTA944UDB 271.8 229 8.15 27.6 298. 257 31 2 1 HTA948UDB 36.2 378 14.3 298.9 331.6 277 35 2 1 HTA952UDB 323. 43 15.2 318.9 351.6 297 37 2 1 HTA956UDB 357.3 675 23.5 347.1 385. 32 41 2.5 1 HTA96UDB 374.1 715 24.8 367.1 45.2 34 43 2.5 1 HTA964UDB 257

Main Spindle Beaings Angula contact ball beaings fo axial loads (steel ball type) HTAUA seies Contact angle 3 d 5 32mm 1 2B 1 D d d1 D2 2a Pat Bounday dimensions Basic load atings Static thust Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D 2B s min 1 1s min 1 Ca Coa Ca Coa lubication lubication HTA1UADB 5 8 28.5 1.6 24.7 48.5 2 52 4 95 23.2 2 37 15 4 19 2 HTA11UADB 55 9 33 1.1.6 26.8 57.5 2 73 5 85 27.7 2 82 13 8 17 2 HTA12UADB 6 95 33 1.1.6 28.1 63. 2 86 6 4 3.5 3 1 12 9 16 1 HTA13UADB 65 1 33 1.1.6 28.5 65. 2 9 6 65 32. 3 25 12 1 15 2 HTA14UADB 7 11 36 1.1.6 35. 82. 3 55 8 35 4. 4 1 11 1 13 9 HTA15UADB 75 115 36 1.1.6 37. 91.5 3 8 9 3 45.5 4 65 1 5 13 2 HTA16UADB 8 125 4.5 1.1.6 42.5 15 4 35 1 7 52. 5 3 9 8 12 2 HTA17UADB 85 13 4.5 1.1.6 43. 18 4 4 11 1 54.5 5 55 9 3 11 6 HTA18UADB 9 14 45 1.5 1 5. 127 5 1 13 63.5 6 5 8 7 1 9 HTA19UADB 95 145 45 1.5 1 5.5 131 5 15 13 4 66. 6 75 8 3 1 4 HTA2UADB 1 15 45 1.5 1 52.5 14 5 35 14 3 71. 7 25 8 1 HTA21UADB 15 16 49.5 2 1 6. 163 6 1 16 6 82.5 8 4 7 5 9 4 HTA22UADB 11 17 54 2 1 74.5 2 7 6 2 4 1 1 2 7 1 8 9 HTA24UADB 12 18 54 2 1 75. 26 7 65 21 14 1 6 6 7 8 3 HTA26UADB 13 2 63 2 1 18 293 11 29 9 144 14 7 6 1 7 6 HTA28UADB 14 21 63 2 1 111 315 11 3 32 156 15 9 5 7 7 1 HTA3UADB 15 225 67.5 2.1 1.1 114 33 11 7 34 169 17 2 5 3 6 7 HTA32UADB 16 24 72 2.1 1.1 134 39 13 7 4 196 2 5 6 3 HTA34UADB 17 26 81 2.1 1.1 153 45 15 9 46 226 23 4 7 5 8 HTA36UADB 18 28 9 2.1 1.1 177 53 18 1 54 265 27 4 3 5 4 HTA38UADB 19 29 91 2.1 1.1 179 545 18 3 55 5 275 28 4 2 5 2 HTA4UADB 2 31 99 2.1 1.1 21 61 2 5 62 31 31 5 3 9 4 9 HTA44UADB 22 34 18 3 1.1 253 775 25 8 79 385 39 5 3 6 4 5 HTA48UADB 24 36 18 3 1.1 261 825 26 6 84 415 42 5 3 3 4 2 HTA52UADB 26 4 123 4 1.5 31 14 31 5 16 52 53 5 3 3 8 HTA56UADB 28 42 123 4 1.5 315 111 32 5 113 565 57 5 2 9 3 6 HTA6UADB 3 46 142.5 4 1.5 36 133 37 135 67 68 5 2 6 3 3 HTA64UADB 32 48 142.5 4 1.5 365 136 37 139 7 71 5 2 5 3 1 1 Minimum allowable value fo cone adius dimension o 1. 258

Main Spindle Beaings 1as as dadb Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Load Intenal Mass Refeence Abutment and fillet dimensions Pat cente fee space dimensions numbe mm cm 3 kg mm mm Two ow Two ow da Db as 1as 2a (appox.) (appox.) d1 D2 min max max max 52.1 9.24 6.7 73.2 57.5 74. 1.6 HTA1UADB 58.6 13.39 68.2 8.8 65. 84. 1.6 HTA11UADB 61.5 13.41 73.2 85.8 7. 89. 1.6 HTA12UADB 64.4 14.44 78.2 9.8 75. 94. 1.6 HTA13UADB 7.3 18.61 85.3 99.1 8. 14 1.6 HTA14UADB 73.2 19.65 9.3 14.1 85. 19 1.6 HTA15UADB 79.8 26.88 97.4 112.5 9. 119 1.6 HTA16UADB 82.7 28.93 12.4 117.5 95. 124 1.6 HTA17UADB 89.3 38 1.22 19.4 125.9 12 132.5 1.5 1 HTA18UADB 92.1 39 1.27 114.4 13.9 17 137.5 1.5 1 HTA19UADB 95.1 39 1.34 119.5 136. 112 142.5 1.5 1 HTA2UADB 11.6 49 1.74 126.5 144.3 119 152.5 2 1 HTA21UADB 18.3 66 2.14 133.1 153.4 124 162.5 2 1 HTA22UADB 114.1 67 2.32 143.3 163.5 134 172.5 2 1 HTA24UADB 127.3 18 3.39 156.4 181.7 144 192.5 2 1 HTA26UADB 133.1 114 3.6 166.4 191.7 154 22.5 2 1 HTA28UADB 142.6 141 4.46 178.9 24.3 167 215 2 1 HTA3UADB 152.1 168 5.4 19.6 218. 177 23 2 1 HTA32UADB 165.3 238 7.2 24.7 235.3 187 25 2 1 HTA34UADB 178.5 285 1.6 218.9 251.8 197 27 2 1 HTA36UADB 184.3 3 11. 228.9 261.7 27 28 2 1 HTA38UADB 197.5 436 13.8 243. 278.5 217 3 2 1 HTA4UADB 216.6 55 18.1 266.3 36.9 24 33 2.5 1 HTA44UADB 228.1 65 18.9 286.3 326.8 26 35 2.5 1 HTA48UADB 253. 85 28.4 314.6 36.3 283 388 3 1.5 HTA52UADB 264.6 9 3.2 334.6 38.3 33 48 3 1.5 HTA56UADB 291.8 1265 43.6 362.9 414. 323 448 3 1.5 HTA6UADB 33.3 134 45.8 382.9 433.9 343 468 3 1.5 HTA64UADB 259

Main Spindle Beaings Angula contact ball beaings fo axial loads (steel ball type) HTAU seies Contact angle 4 d 5 32mm 1 2B 1 D d d1 D2 2a Pat Bounday dimensions Basic load atings Static thust Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D 2B s min 1 1s min 1 Ca Coa Ca Coa lubication lubication HTA1UDB 5 8 28.5 1.6 29.6 55.5 3 5 65 12.3 1 25 11 5 14 6 HTA11UDB 55 9 33 1.1.6 32. 64. 3 25 6 5 14.3 1 46 1 3 13 1 HTA12UDB 6 95 33 1.1.6 33.5 69.5 3 4 7 1 15.7 1 6 9 7 12 3 HTA13UDB 65 1 33 1.1.6 34. 72. 3 45 7 35 16.4 1 67 9 1 11 5 HTA14UDB 7 11 36 1.1.6 41.5 91. 4 25 9 3 21.5 2 19 8 3 1 6 HTA15UDB 75 115 36 1.1.6 44. 11. 4 5 1 3 24. 2 45 7 9 1 HTA16UDB 8 125 4.5 1.1.6 5.5 117 5 15 11 9 28.4 2 9 7 3 9 3 HTA17UDB 85 13 4.5 1.1.6 51. 12 5 2 12 3 29.4 3 7 8 8 HTA18UDB 9 14 45 1.5 1 59.5 141 6 5 14 4 32. 3 25 6 5 8 3 HTA19UDB 95 145 45 1.5 1 6. 146 6 1 14 9 33.5 3 4 6 3 7 9 HTA2UDB 1 15 45 1.5 1 62. 156 6 35 15 9 35.5 3 6 6 7 6 HTA21UDB 15 16 49.5 2 1 71. 181 7 25 18 4 42.5 4 35 5 7 7 2 HTA22UDB 11 17 54 2 1 88.5 222 9 22 7 5. 5 1 5 4 6 8 HTA24UDB 12 18 54 2 1 89. 228 9 5 23 3 52. 5 3 5 6 3 HTA26UDB 13 2 63 2 1 128 325 13 33 74. 7 55 4 5 5 8 HTA28UDB 14 21 63 2 1 132 345 13 5 35 5 79.5 8 1 4 3 5 4 HTA3UDB 15 225 67.5 2.1 1.1 136 37 13 8 37 5 85. 8 65 4 5 2 HTA32UDB 16 24 72 2.1 1.1 159 435 16 2 44 13 1 5 3 8 4 8 HTA34UDB 17 26 81 2.1 1.1 182 5 18 6 51 116 11 8 3 5 4 4 HTA36UDB 18 28 9 2.1 1.1 211 585 21 5 6 14 14 3 3 3 4 1 HTA38UDB 19 29 91 2.1 1.1 214 65 21 8 61 5 145 14 8 3 1 4 HTA4UDB 2 31 99 2.1 1.1 24 68 24 4 69 159 16 2 2 9 3 7 HTA44UDB 22 34 18 3 1.1 3 86 3 5 87 5 21 2 5 2 7 3 4 HTA48UDB 24 36 18 3 1.1 31 915 31 5 93 216 22 2 5 3 2 HTA52UDB 26 4 123 4 1.5 365 116 37 5 118 275 28 2 3 2 9 HTA56UDB 28 42 123 4 1.5 375 123 38 5 125 293 29 9 2 1 2 7 HTA6UDB 3 46 142.5 4 1.5 43 147 44 15 355 36 2 2 5 HTA64UDB 32 48 142.5 4 1.5 435 152 44 155 365 37 1 9 2 4 1 Minimum allowable value fo cone adius dimension o 1. 26

Main Spindle Beaings 1as as dadb Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Load Intenal Mass Refeence Abutment and fillet dimensions Pat cente fee space dimensions numbe mm cm 3 kg mm mm Two ow Two ow da Db as 1as 2a (appox.) (appox.) d1 D2 min max max max 69.2 9.24 6.7 73.1 57.5 74. 1.6 HTA1UDB 77.7 13.39 68.2 8.7 65. 84. 1.6 HTA11UDB 81.9 13.41 73.2 85.7 7. 89. 1.6 HTA12UDB 86.1 14.44 78.2 9.7 75. 94. 1.6 HTA13UDB 94. 18.61 85.3 99. 8. 14 1.6 HTA14UDB 98.2 19.65 9.3 14. 85. 19 1.6 HTA15UDB 16.7 26.88 97.4 112.4 9. 119 1.6 HTA16UDB 11.9 28.93 12.4 117.4 95. 124 1.6 HTA17UDB 119.5 38 1.22 19.4 125.8 12 132.5 1.5 1 HTA18UDB 123.7 39 1.27 114.4 13.8 17 137.5 1.5 1 HTA19UDB 128. 39 1.34 119.5 135.9 112 142.5 1.5 1 HTA2UDB 136.5 49 1.74 126.5 144.2 119 152.5 2 1 HTA21UDB 145.1 66 2.14 133.1 153.3 124 162.5 2 1 HTA22UDB 153.6 67 2.32 143.3 163.4 134 172.5 2 1 HTA24UDB 17.8 18 3.39 156.4 181.6 144 192.5 2 1 HTA26UDB 179.2 114 3.6 166.4 191.6 154 22.5 2 1 HTA28UDB 191.9 141 4.46 178.9 24.2 167 215 2 1 HTA3UDB 24.7 168 5.4 19.6 218.4 177 23 2 1 HTA32UDB 221.9 238 7.2 24.7 235.2 187 25 2 1 HTA34UDB 239.1 285 1.6 218.9 251.6 197 27 2 1 HTA36UDB 247.4 3 11. 228.9 261.6 27 28 2 1 HTA38UDB 264.6 436 13.8 243. 278.4 217 3 2 1 HTA4UDB 29.3 55 18.1 266.3 36.7 24 33 2.5 1 HTA44UDB 37. 65 18.9 286.3 326.6 26 35 2.5 1 HTA48UDB 339.9 85 28.4 314.6 36.1 283 388 3 1.5 HTA52UDB 356.7 9 3.2 334.6 38.1 33 48 3 1.5 HTA56UDB 391.7 1265 43.6 362.9 413.7 323 448 3 1.5 HTA6UDB 48.5 134 45.8 382.9 433.7 343 468 3 1.5 HTA64UDB 261

Main Spindle Beaings Angula contact ball beaings fo axial loads (ceamic ball type) 5S-HTAUA seies Contact angle 3 d 5 13mm 1 2B 1 D d d1 D2 2a Pat Bounday dimensions Basic load atings Static thust Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D 2B s min 1 1s min 1 Ca Coa Ca Coa lubication lubication 5S-HTA1UADB 5 8 28.5 1.6 24.7 33.5 2 52 3 4 15.7 1 6 17 3 22 2 5S-HTA11UADB 55 9 33 1.1.6 26.8 4. 2 73 4 5 18.6 1 9 15 5 19 9 5S-HTA12UADB 6 95 33 1.1.6 28.1 43.5 2 86 4 45 2.5 2 9 14 5 18 6 5S-HTA13UADB 65 1 33 1.1.6 28.5 45. 2 9 4 6 21.6 2 2 13 6 17 5 5S-HTA14UADB 7 11 36 1.1.6 35. 57. 3 55 5 8 27.2 2 77 12 5 16 5S-HTA15UADB 75 115 36 1.1.6 37. 63.5 3 8 6 45 3.5 3 15 11 8 15 2 5S-HTA16UADB 8 125 4.5 1.1.6 42.5 73. 4 35 7 4 35. 3 6 11 14 1 5S-HTA17UADB 85 13 4.5 1.1.6 43. 75. 4 4 7 65 36.5 3 75 1 5 13 4 5S-HTA18UADB 9 14 45 1.5 1 49.5 88.5 5 5 9 43. 4 4 9 8 12 5 5S-HTA19UADB 95 145 45 1.5 1 5.5 91. 5 15 9 3 44.5 4 55 9 4 12 5S-HTA2UADB 1 15 45 1.5 1 52.5 97. 5 35 9 9 48. 4 9 9 11 5 5S-HTA21UADB 15 16 49.5 2 1 6. 113 6 1 11 5 55.5 5 65 8 5 1 9 5S-HTA22UADB 11 17 54 2 1 74. 139 7 55 14 1 67. 6 85 8 1 3 5S-HTA24UADB 12 18 54 2 1 75. 143 7 65 14 5 7. 7 15 7 5 9 6 5S-HTA26UADB 13 2 63 2 1 18 23 11 2 7 97. 9 9 6 8 8 7 1 Minimum allowable value fo cone adius dimension o 1. 262

Main Spindle Beaings 1as as dadb Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Load Intenal Mass Refeence Abutment and fillet dimensions Pat cente fee space dimensions numbe mm cm 3 kg mm mm Two ow Two ow da Db as 1as 2a (appox.) (appox.) d1 D2 min max max max 52.1 9.22 6.7 73.2 57.5 74. 1.6 5S-HTA1UADB 58.6 13.36 68.2 8.8 65. 84. 1.6 5S-HTA11UADB 61.5 13.39 73.2 85.8 7. 89. 1.6 5S-HTA12UADB 64.4 14.41 78.2 9.8 75. 94. 1.6 5S-HTA13UADB 7.3 18.57 85.3 99.1 8. 14 1.6 5S-HTA14UADB 73.2 19.6 9.3 14.1 85. 19 1.6 5S-HTA15UADB 79.8 26.83 97.4 112.5 9. 119 1.6 5S-HTA16UADB 82.7 28.87 12.4 117.5 95. 124 1.6 5S-HTA17UADB 89.3 38 1.15 19.4 125.9 12 132.5 1.5 1 5S-HTA18UADB 92.1 39 1.2 114.4 13.9 17 137.5 1.5 1 5S-HTA19UADB 95.1 39 1.26 119.5 136. 112 142.5 1.5 1 5S-HTA2UADB 11.6 49 1.64 126.5 144.3 119 152.5 2 1 5S-HTA21UADB 18.3 66 2. 133.1 153.4 124 162.5 2 1 5S-HTA22UADB 114.1 67 2.17 143.3 163.5 134 172.5 2 1 5S-HTA24UADB 127.3 18 3.13 156.4 181.7 144 192.5 2 1 5S-HTA26UADB 263

Main Spindle Beaings Angula contact ball beaings fo axial loads (ceamic ball type) 5S-HTAU seies Contact angle 4 d 5 13mm 1 2B 1 D d d1 D2 2a Pat Bounday dimensions Basic load atings Static thust Limiting speed numbe dynamic static dynamic static load capacity mm kn kgf kn kgf min -1 gease oil d D 2B s min 1 1s min 1 Ca Coa Ca Coa lubication lubication 5S-HTA1UDB 5 8 28.5 1.6 29.6 38.5 3 3 9 14.6 1 49 12 2 15 4 5S-HTA11UDB 55 9 33 1.1.6 32. 44.5 3 25 4 5 17.1 1 74 1 9 13 8 5S-HTA12UDB 6 95 33 1.1.6 33.5 48. 3 4 4 9 18.7 1 91 1 2 12 9 5S-HTA13UDB 65 1 33 1.1.6 34. 5. 3 45 5 1 19.6 2 9 6 12 1 5S-HTA14UDB 7 11 36 1.1.6 41.5 63. 4 25 6 45 25.6 2 61 8 8 11 1 5S-HTA15UDB 75 115 36 1.1.6 44. 7.5 4 5 7 15 28.7 2 93 8 3 1 5 5S-HTA16UDB 8 125 4.5 1.1.6 5.5 81. 5 15 8 25 34. 3 45 7 7 9 8 5S-HTA17UDB 85 13 4.5 1.1.6 51. 83.5 5 2 8 5 35. 3 6 7 3 9 3 5S-HTA18UDB 9 14 45 1.5 1 59.5 98. 6 5 1 38. 3 9 6 9 8 7 5S-HTA19UDB 95 145 45 1.5 1 6. 11 6 1 1 3 39.5 4 5 6 6 8 3 5S-HTA2UDB 1 15 45 1.5 1 62. 18 6 35 11 42.5 4 3 6 3 8 5S-HTA21UDB 15 16 49.5 2 1 71. 125 7 25 12 8 5.5 5 15 6 7 5 5S-HTA22UDB 11 17 54 2 1 88.5 154 9 15 7 59.5 6 1 5 6 7 1 5S-HTA24UDB 12 18 54 2 1 89. 158 9 5 16 1 61.5 6 3 5 3 6 7 5S-HTA26UDB 13 2 63 2 1 128 225 13 23 88. 9 4 8 6 1 1 Minimum allowable value fo cone adius dimension o 1. 264

Main Spindle Beaings 1as as dadb Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa Load Intenal Mass Refeence Abutment and fillet dimensions Pat cente fee space dimensions numbe mm cm 3 kg mm mm Two ow Two ow da Db as 1as 2a (appox.) (appox.) d1 D2 min max max max 69.2 9.22 6.7 73.1 57.5 74. 1.6 5S-HTA1UDB 77.7 13.36 68.2 8.7 65. 84. 1.6 5S-HTA11UDB 81.9 13.39 73.2 85.7 7. 89. 1.6 5S-HTA12UDB 86.1 14.41 78.2 9.7 75. 94. 1.6 5S-HTA13UDB 94. 18.57 85.3 99. 8. 14 1.6 5S-HTA14UDB 98.2 19.6 9.3 14. 85. 19 1.6 5S-HTA15UDB 16.7 26.83 97.4 112.4 9. 119 1.6 5S-HTA16UDB 11.9 28.87 12.4 117.4 95. 124 1.6 5S-HTA17UDB 119.5 38 1.15 19.4 125.8 12 132.5 1.5 1 5S-HTA18UDB 123.7 39 1.2 114.4 13.8 17 137.5 1.5 1 5S-HTA19UDB 128. 39 1.26 119.5 135.9 112 142.5 1.5 1 5S-HTA2UDB 136.5 49 1.64 126.5 144.2 119 152.5 2 1 5S-HTA21UDB 145.1 66 2. 133.1 153.3 124 162.5 2 1 5S-HTA22UDB 153.6 67 2.17 143.3 163.4 134 172.5 2 1 5S-HTA24UDB 17.8 18 3.13 156.4 181.6 144 192.5 2 1 5S-HTA26UDB 265

NTN Main Spindle Beaings

NTN Main Spindle Beaings Main Spindle Beaings 12. Tapeed Rolle Beaings CONTENTS 12. Tapeed Rolle Beaings 268 273 q Load calculation 268 w Beaing designation 268 e Accuacy 269 Recommended fit fo high-pecision tapeed olle beaings 269 t Dimension tables 27 267

NTN Main Spindle Beaings 12. Tapeed Rolle Beaings 2 Beaing designations Tapeed olle beaings ae designed so that the apexes of the inne ing, oute ing, and olles ae located at a common point on the beaing cente line. Accodingly, the olles oll on the aceway sufaces and slide along the back ib of the inne ing cone, guided by the esultant foce fom the inne ing and oute ing aceways. This beaing is suitable fo handling a adial load, an axial load in one diection, and the esultant load. Also, it has a lage load capacity. In geneal, the cage of a tapeed olle beaing is a punched steel plate type. If P4 o highe is needed fo unning accuacy, NTN ecommends that a highstength machined bass cage to be used. 1 Load calculation Tapeed olle beaings ae geneally used in pais, so thei dynamic equivalent load can be calculated accoding to Table 12.1. 329 18 X U DB +xx P4 Toleance class code P5: JIS class 5 P4: JIS class 4 UP: NTN special high pecision Space width dimension Duplex aangement code DB: Back-to-back DF: Face-to-face Intenal modification code Nominal boe diamete Beaing seies code Table 12.1 Beaing aangement and equivalent load Beaing aangement Load condition Axial load Equivalent adial load DB aangement 1 Fa F1 2 F2 F1 F2 Fa Y1 Y2 Fa1 F2 Fa Y2 F2 Fa2 Y2 P1XF1Y1 P2F2 F2 Fa Y2 DF aangement 2 Fa F2 1 F1 F1 F2 Fa Y1 Y2 F1 Fa1 Y1 Fa2 F1 Fa Y1 P1F1 P2XF2Y2 F1 Fa Y1 DB aangement 1 F1 Fa 2 F2 F2 F1 Fa Y2 Y1 F1 Fa1 Y1 Fa2 F1 Fa Y1 P1F1 P2XF2Y2 F1 Fa Y1 DF aangement 2 F2 Fa 1 F1 F2 F1 Fa Y2 Y1 Fa1 F2 Fa Y2 F2 Fa2 Y2 P1XF1Y1 P2F2 F2 F Y2 Note 1: The above ae valid when the beaing intenal cleaance and peload ae zeo. 2: Radial foces in the opposite diection to the aow in the above illustation ae also egaded as positive. 268

NTN Main Spindle Beaings 3 Accuacy Table 12.2 Inne ings Nominal boe diamete d ove incl. 18 3 5 8 12 18 3 5 8 12 18 25 Deviation of mean boe diamete in a single plane dmp Vaiation of boe diamete in a single plane Class 5 Class 4 1 Class 5 Class 4 Class 5 Class 4 Class 5 Class 4 Class 5 Class 4 Class 4 Class 5 Class 4 Class 5 Class 4 high low high low max max max max max high low high low 8 1 12 15 18 22 6 8 9 1 13 15 6 8 9 11 14 17 4 Recommended fit fo high-pecision tapeed olle beaings Vdsp 5 6 7 8 1 11 Mean boe diamete deviation Vdmp 5 5 6 8 9 11 4 5 5 5 7 8 Radial unout Kia 5 6 7 8 11 13 3 4 4 5 6 8 Pependiculaity of inne ing face with espect to the boe Sd 8 8 8 9 1 11 4 4 5 5 6 7 Axial unout Sia 4 4 4 5 7 8 Width vaiation Bs 2 24 3 4 5 6 1 The toleance of boe diamete deviation ds applicable to class 4 is the same as the toleance of single plane mean boe diamete deviation dmp. Table 12.3 Oute ings Nominal boe diamete D ove incl. 3 5 8 12 15 18 25 5 8 12 15 18 25 315 Deviation of mean outside diamete in a single plane Dmp Class 5 Class 4 2 high low high low 9 11 13 15 18 2 25 7 9 1 11 13 15 18 Vaiation of outside diamete in a single plane VDsp Class 5 Class 4 7 8 1 11 14 15 19 max 5 7 8 8 1 11 14 Mean single plane outside diamete vaiation VDmp Class 5 Class 4 max 5 6 7 8 9 1 13 5 5 5 6 7 8 9 Radial unout Kea Class 5 Class 4 max 7 8 1 11 13 15 18 5 5 6 7 8 1 11 Pependiculaity of oute ing outside suface with espect to the face SD Class 5 Class 4 max 8 8 9 1 1 11 13 4 4 5 5 5 7 8 Unit: Axial unout Sea Class 4 max Unit: Deviation of the actual beaing width Ts 2 2 2 2 35 35 2 The toleance of outside diamete deviation Ds applicable to class 4 is the same as the toleance of single plane mean outside diamete deviation Dmp. 5 5 6 7 8 1 1 2 2 2 2 25 25 Table 12.4 Fit to shaft Unit: Table 12.5 Fit to housing Unit: Nominal boe diamete d ove incl. Fit between inne ing and shaft Fixed side Tageted 1 intefeence Floating side Tageted 1 intefeence Nominal boe diamete D ove incl. Fit between oute ing and housing Tageted intefeence 1 18 3 5 3 5 8 5T 6T 7T 1T 2T 3T 3 5 8 5 8 12 3T 3T 4T 8 12 18 12 18 25 8T 1T 13T 4T 5T 6T 12 15 18 15 18 25 4T 4T 5T 25 315 315 4 1 Taget the median value. T: Tight (Intefeence) 15T 18T 6T 8T 25 315 4 315 4 5 5T 6T 7T 269

Main Spindle Beaings 5 Dimension tables fo tapeed olle beaings Tapeed Rolle Beaings d 2 95mm 1 C T 2 D 2 B d a pat Bounday dimensions Basic load atings Limiting speed numbe dynamic static dynamic static mm kn kgf min -1 gease oil d D T B C s min 1 1s min 1 2s min 1 C Co C Co lubication lubication 4T-324X 2 42 15 15 12.6.6.15 24.9 27.9 2 54 2 84 9 5 13 4T-325X 25 47 15 15 11.5.6.6.15 27.8 33.5 2 83 3 45 7 9 11 4T-326X 3 55 17 17 13 1 1.3 37.5 46. 3 8 4 7 6 9 9 2 4T-327X 35 62 18 18 14 1 1.3 41.5 52.5 4 25 5 35 6 1 8 1 4T-328X 4 68 19 19 14.5 1 1.3 5. 65.5 5 1 6 65 5 3 7 1 4T-329X 45 75 2 2 15.5 1 1.3 57.5 76.5 5 85 7 8 4 8 6 4 3291XU 5 72 15 15 12.6.6.15 35.5 57. 3 65 5 8 4 7 6 3 4T-321X 5 8 2 2 15.5 1 1.3 62.5 88. 6 4 9 4 4 5 8 32911XU 55 8 17 17 14 1 1.3 44.5 73.5 4 55 7 5 4 3 5 7 4T-3211X 55 9 23 23 17.5 1.5 1.5.6 8.5 118 8 2 12 4 5 4 32912XA 6 85 17 17 14 1 1.3 51. 83. 5 2 8 45 4 5 3 4T-3212X 6 95 23 23 17.5 1.5 1.5.6 82. 123 8 35 12 5 3 7 4 9 32913XU 65 9 17 17 14 1 1.3 48.5 85. 4 9 8 7 3 7 4 9 4T-3213X 65 1 23 23 17.5 1.5 1.5.6 83. 128 8 45 13 3 4 4 6 32914XU 7 1 2 2 16 1 1.3 68.5 11 7 11 2 3 4 4 6 4T-3214X 7 11 25 25 19 1.5 1.5.6 15 16 1 7 16 4 3 2 4 2 32915XU 75 15 2 2 16 1 1.3 69.5 114 7 1 11 6 3 2 4 3 3215XU 75 115 25 25 19 1.5 1.5.6 16 167 1 8 17 3 4 32916XU 8 11 2 2 16 1 1.3 72. 121 7 35 12 4 3 4 3216XU 8 125 29 29 22 1.5 1.5.6 139 216 14 2 22 2 8 3 7 32917XU 85 12 23 23 18 1.5 1.5.6 94. 157 9 6 16 1 2 8 3 8 3217XU 85 13 29 29 22 1.5 1.5.6 142 224 14 4 22 9 2 6 3 5 32918XU 9 125 23 23 18 1.5 1.5.6 97.5 168 9 95 17 1 2 7 3 6 3218XU 9 14 32 32 24 2 1.5.6 168 27 17 2 27 6 2 5 3 3 32919XU 95 13 23 23 18 1.5 1.5.6 11 178 1 3 18 2 2 5 3 4 3219XU 95 145 32 32 24 2 1.5.6 171 28 17 5 28 6 2 3 3 1 1 Minimum allowable value fo chamfe dimension, 1 o 2. 27

Main Spindle Beaings Sa Sb 1a Dynamic equivalent adial load Da db a da Db PXFYFa Fa Fa e F F e X Y X Y 1.4 Y2 Static equivalent adial load Po.5FYoFa Note that when PoF, PoF. The values fo e, Y2 and Yo ae given in the table below. Abutment and fillet dimensions Load Facto Axial Mass cente load facto mm mm kg da db Da Db Sa Sb as 1as min max max min min min min max max a e Y2 Y (appox.) 24.5 25 37.5 36 39 3 3.6.6 1.5.37 1.6.88.97 29.5 3 42.5 4 44 3 3.5.6.6 12.43 1.39.77.114 35.5 35 49.5 48 52 3 4 1 1 13.5.43 1.39.77.166 4.5 4 56.5 54 59 4 4 1 1 15.5.45 1.32.73.224 45.5 46 62.5 6 65 4 4.5 1 1 15.38 1.58.87.273 5.5 51 69.5 67 72 4 4.5 1 1 16.5.39 1.53.84.346 54.5 54 67.5 63.5 69 3 3.6.6 13.5.34 1.76.97 1.191 55.5 56 74.5 72 77 4 4.5 1 1 17.5.42 1.42.78.366 6.5 6.5 74.5 7.5 76.5 3 3 1 1 14.5.31 1.94 1.7.274 63.5 63 81.5 81 86 4 5.5 1.5 1.5 2.41 1.48.81.563 65.5 65.5 79.5 76.5 82 3 3 1 1 15.5.33 1.8.99.296 68.5 67 86.5 85 91 4 5.5 1.5 1.5 21.43 1.39.77.576 7.5 7 84.5 8 86.5 3 3 1 1 16.5.35 1.7.93.315 73.5 72 91.5 9 97 4 5.5 1.5 1.5 22.5.46 1.31.72.63 75.5 75 94.5 9 96 4 4 1 1 18.32 1.9 1.5.487 78.5 78 11.5 98 15 5 6 1.5 1.5 24.43 1.38.76.848 8.5 8 99.5 94 11.5 4 4 1 1 19.33 1.8.99.511 83.5 83 16.5 13 11 5 6 1.5 1.5 25.5.46 1.31.72.99 85.5 85 14.5 99 16.5 4 4 1 1 2.35 1.71.94.54 88.5 89 116.5 112 12 6 7 1.5 1.5 27.42 1.42.78 1.28 93.5 92 111.5 111 115 4 5 1.5 1.5 21.33 1.83 1.1.733 93.5 94 121.5 117 125 6 7 1.5 1.5 28.5.44 1.36.75 1.35 98.5 96 116.5 112.5 12.5 4 5 1.5 1.5 22.34 1.75.96.817 1 1 131.5 125 134 6 8 2 1.5 3.42 1.42.78 1.79 13.5 11 121.5 117 125.5 4 5 1.5 1.5 23.5.36 1.68.92.851 15 15 136.5 13 14 6 8 2 1.5 31.5.44 1.36.75 1.83 271

Main Spindle Beaings Tapeed Rolle Beaings d 1 19mm 1 C T 2 D 2 B d a pat Bounday dimensions Basic load atings Limiting speed numbe dynamic static dynamic static mm kn kgf min -1 gease oil d D T B C s min 1 1s min 1 2s min 1 C Co C Co lubication lubication 3292XU 1 14 25 25 2 1.5 1.5.6 121 26 12 3 21 2 4 3 2 322XU 1 15 32 32 24 2 1.5.6 17 281 17 3 28 6 2 2 3 32921XA 15 145 25 25 2 1.5 1.5.6 126 219 12 8 22 4 2 3 3 3221XU 15 16 35 35 26 2.5 2.6 21 335 2 5 34 2 1 2 8 32922XA 11 15 25 25 2 1.5 1.5.6 127 226 13 23 1 2 2 2 9 3222XU 11 17 38 38 29 2.5 2.6 236 39 24 39 5 2 2 7 32924XU 12 165 29 29 23 1.5 1.5.6 162 294 16 5 3 2 2 6 3224XU 12 18 38 38 29 2.5 2.6 245 42 25 43 1 8 2 5 32926XU 13 18 32 32 25 2 1.5.6 194 35 19 8 36 1 8 2 4 3226XU 13 2 45 45 34 2.5 2.6 32 545 32 5 55 5 1 7 2 2 32928XU 14 19 32 32 25 2 1.5.6 2 375 2 4 38 1 7 2 2 3228XU 14 21 45 45 34 2.5 2.6 33 58 33 5 59 5 1 6 2 1 3293XU 15 21 38 38 3 2.5 2.6 268 49 27 3 5 1 6 2 1 323XU 15 225 48 48 36 3 2.5 1 37 655 37 5 67 1 4 1 9 32932XU 16 22 38 38 3 2.5 2.6 276 52 28 2 53 1 5 1 9 3232XU 16 24 51 51 38 3 2.5 1 435 79 44 5 8 5 1 4 1 8 32934XU 17 23 38 38 3 2.5 2.6 286 56 29 2 57 1 4 1 8 3234XU 17 26 57 57 43 3 2.5 1 5 895 51 91 1 3 1 7 32936XU 18 25 45 45 34 2.5 2.6 35 7 36 71 5 1 3 1 7 32938XU 19 26 45 45 34 2.5 2.6 355 71 36 72 1 2 1 6 1 Minimum allowable value fo chamfe dimension, 1 o 2. 272

Main Spindle Beaings Sa Sb 1a Dynamic equivalent adial load Da db a da Db PXFYFa Fa Fa e F F e X Y X Y 1.4 Y2 Static equivalent adial load Po.5FYoFa Note that when PoF, PoF. The values fo e, Y2 and Yo ae given in the table below. Abutment and fillet dimensions Load Facto Axial Mass cente load facto mm mm kg da db Da Db Sa Sb as 1as min max max min min min min max max a e Y2 Y (appox.) 18.5 17.5 131.5 127.5 135.5 4 5 1.5 1.5 24.5.33 1.82 1. 1.14 11 19 141.5 134 144 6 8 2 1.5 32.5.46 1.31.72 1.91 113.5 113.5 136.5 131.5 14.5 5 5 1.5 1.5 25.34 1.76.97 1.2 117 116 15 143 154 6 9 2 2 34.5.44 1.35.74 2.42 118.5 117.5 141.5 137 145.5 5 5 1.5 1.5 26.5.36 1.69.93 1.23 122 122 16 152 163 7 9 2 2 36.5.43 1.39.77 3.7 128.5 128.5 156.5 15 16 6 6 1.5 1.5 29.5.35 1.72.95 1.77 132 131 17 161 173 7 9 2 2 39.46 1.31.72 3.25 14 139 171.5 163.5 174 6 7 2 1.5 31.5.34 1.77.97 2.36 142 144 19 178 192 8 11 2 2 43.5.43 1.38.76 4.96 15 15 181.5 177 184 6 6 2 1.5 34.36 1.67.92 2.51 152 153 2 187 22 8 11 2 2 46.46 1.31.72 5.28 162 162 2 192 22 7 8 2 2 36.5.33 1.83 1.1 3.92 164 164 213 2 216 8 12 2.5 2 49.5.46 1.31.72 6.37 172 17.5 21 199 213.5 7 8 2 2 38.5.35 1.73.95 4.15 174 175 228 213 231 8 13 2.5 2 52.5.46 1.31.72 7.8 182 183 22 213 222 7 8 2 2 42.5.38 1.57.86 4.4 184 187 248 23 249 1 14 2.5 2 56.44 1.35.74 1.5 192 193 24 225 241 8 11 2 2 54.48 1.25.69 6.54 22 24 25 235 251 8 11 2 2 55.48 1.26.69 6.77 273

NTN Ball Scew Suppot Beaings

NTN Ball Scew Suppot Beaings Ball Scew Suppot Beaings 13. Ball Scew Suppot Beaings CONTENTS 13. Ball Scew Suppot Beaings 276 297 q Angula contact thust ball beaings 2A-BST seies 276 w Duplex angula contact ball beaings HT seies 279 e Needle olle beaings with double-ow thust needle olle beaings AXN seies 279 Needle olle beaings with double-ow thust cylindical olle beaings ARN seies 279 Beaing designations 28 t Beaing pecision 281 y Basic peload and axial igidity 284 u Shaft and housing fit 285 i Applications 285 o Stating toque of BST type 286! Recommended lubication specifications 287!1 Dimension tables Angula contact thust ball beaings BST and BST LXL seies 288 2A-BST and 2A-BST LXL seies 29 Duplex angula contact ball beaings HT seies 294 Needle olle beaings with double-ow thust needle olle beaings AXN, ARN seies 296 275

NTN Ball Scew Suppot Beaings 13. Ball Scew Suppot Beaings NTN ballscew beaings ae optimized to suppot a ballscew. These beaings ae categoized as shown in Table 13.1. Table 13.1 Beaing types Type code Notes Boe diamete BST 2A-BST BST LXL/L588 2A-BST LXL/L588 HT AXN ARN Open type thust angula contact ball beaing with 6 contact angle, geneally used with gease lubication Gease-lubicated sealed angula contact ball beaing with 6 contact angle Duplex angula contact ball beaing with 3 contact angle, geneally used with gease lubication Needle olle beaing with double-diection thust needle olle beaing, geneally used with oil lubication Needle olle beaing with double-diection thust cylindical olle beaing, geneally used with oil lubication 176 176 64 25 27 1 Angula contact thust ball beaings BST-1B (LXL/L588), 2A-BST-1B (LXL/L588) seies The 2A-BST type incopoates the maximum possible numbe of small balls (compaed with those of a standad beaing), has thicke inne and oute ings, and a lage contact angle of 6. Thus, this type of beaing boasts geate axial igidity. Additionally, since balls ae used as the olling elements, the stating toque of a angula contact thust ball beaing is less than that of a olle beaing. Open (BST and 2A-BST type) and light-contact seals (BST LXL and 2A-BST LXL type) ae available and molded esin cages ae standad. Side faces of BST type beaings ae flush-gound to povide the same face height diffeence fo both the font and back faces. As a esult, beaings of the same pat numbe can be feely combined into DB, DBT, DTBT configuations as illustated in Fig. 13.2, and the adjustment fo a elevant peload is no longe necessay. Evey single beaing is machined to the same face height so that when any aangement is installed on a ballscew the unit has optimal peload. Fo this eason, no time-consuming peload adjustment (adjustment with shims o tightening and loosening while measuing the stating toque) is necessay. Featues 2A-BST-1B (LXL/L588) 1. Unique heat teatment geatly impoves esistance against olling contact fatigue, leading to longe sevice life (appoximately two times that of the conventional type). 2. Both sides ae sealed to enhance contamination esistance and to peseve the gease. (Lightcontact seal type) 3. Special long-life gease is used. (Light-contact seal type) 4. The combination of a unique heat teatment and special gease educes fetting (by 8% o moe fo sliding mode, 9% o moe fo olling mode, compaed to the conventional type). (Light-contact seal type) 5. Pe-gease beaings eliminate the need fo futhe gease packing and allow easie handling. (Lightcontact seal type) Open type 2A-BST type Light-contact sealed type 2A-BST LXL type Fig. 13.1 DB DBT DTBT Fig. 13.2 Beaing aangement 276

NTN Ball Scew Suppot Beaings Easy handling 2A-BST LXL type and BST LXL gease-lubicated sealed angula contact ball beaings eliminate the need fo gease filling because they have been packed with gease in advance. You need to only wipe away ust peventive oil befoe use. Seals in diffeent colos ae used fo the font and back sides. The font side (black) and back side (oange) can be identified by the colo of a seal, and you can easily check configuation duing assembly. Load Sliding Ball Plate DB set (back faces in combination) Oange seal Oange seal DF set (font faces in combination) Fig. 13.3 Fetting esistance test (sliding) Table 13.3 Test conditions Mateial Plate Ball Load (N) Max. contact suface pessue (MPa) Loading fequency (1 5 cycle) Sliding cycle (Hz) Amplitude (mm) Lubication Tempeatue Conventional type (SUJ2 without special heat teatment) ULTAGE seies (SUJ2 with special heat teatment) SUJ2 98 256 Test time: 8 h 3.47 Gease Room tempeatue Black seal Black seal Won depth of plate Wea atio 1.2 1.8.6.4.2 Conventional type ULTAGE seies Conventional type1. ULTAGE seies.12 Amount of wea 1/8 Pefomance tests 2A-BST-1B (LXL/L588) Ball scew suppot thust angula contact ball beaings have a unique intenal design in ode to lengthen sevice life and enhance esistance to fetting. (1) Fetting esistance test (sliding) Resistance to fetting while sliding is tested by the fetting esistance test. A conceptual dawing of the test is shown in Fig. 13.3, and the test conditions ae shown in Table 13.3. In this test, a fixed ball is pushed against a plate, and ecipocated fo a fixed peiod. The volume of ball and plate wea depth ae checked afte testing as shown in Fig. 13.4. Due to a unique heat teatment and special gease (light-contact seal type), amount of wea is educed to 1/5 o less compaed to the conventional type consisting of standad SUJ2 plate mateial and lithiumbased geneal pupose gease. (Fig. 13.4) Wea of ball Wea atio 1.2 1.8.6.4.2 Conventional type ULTAGE seies Conventional type1. ULTAGE seies.2 Amount of wea 1/5 Fig. 13.4 Ratio of fetting coosion in sliding mode 277

NTN Ball Scew Suppot Beaings (2) Fetting esistance test (olling) Resistance against fetting while olling is tested in the otating and oscillating type fetting coosion test. A conceptual dawing of the test is shown in Fig. 13.5, and the test conditions ae shown in Table 13-4. In this test, a housing plate is fixed, and the shaft plate oscillates. The decease in the weight of the beaing plate afte the test is shown in Fig. 13.6. Due to the combination of a unique heat teatment and a special gease (light-contact seal type), the amount of wea is educed to 1/1 o less compaed to the conventional type consisting of standad SUJ2 steel ings and lithium based geneal pupose gease. (Fig. 13.6). (3) Rolling contact fatigue life test Resistance to olling contact fatigue is impoved as a esult of a special heat teatment, leading to a longe sevice life compaed to the standad heat-teated type model in both clean and contaminated oil. (Fig. 13.7) Table 13.5 Test conditions Beaing (mm) Radial load (kn) Shaft speed (min -1 ) Lubication Atmosphee tempeatue ( C) Evaluated with deep goove ball beaing 626 36216 6.86 2 VG56 tubine oil 6 Load 2.5 2 Standad heat-teated ULTAGE seies Clean oil Life atio 1.5 1 Standad heat-teated 1. ULTAGE seies 2.3.5 2 times longe compaed to conventional Load (kn) Max. contact suface pessue (MPa) Test time (h) Oscillating cycle (Hz) Oscillating angle (deg) Lubication Tempeatue Oscillation Fig. 13.5 Fetting esistance test (olling) Table 13.4 Test conditions Beaing Evaluated with thust ball beaing 5124 (mm) 2414 2.5 17 8 3 12 Gease Room tempeatue Oil mixed with foeign mattes Life atio 3 2.5 2 1.5 1.5 Standad heat-teated ULTAGE seies Standad heat-teated 1. ULTAGE seies 2.42 2.4 times longe compaed to conventional Fig. 13.7 Effect of special heat teatment on olling contact fatigue life 1.2 1 Wea atio.8.6.4.2 Wea 1/1 1 Conventional type (beaing plate SUJ2, lithium base geneal pupose gease) 2 ULTAGE seies (beaing plate SUJ2 with special heat teatment, special gease) 1 Conventional type (beaing plate SUJ2, lithium base geneal pupose gease) 1. 2 ULTAGE seies (beaing plate SUJ2 with special heat teatment, special gease).1 Fig. 13.6 Ratio of fetting coosion while olling 278

NTN Ball Scew Suppot Beaings (4) Gease life test Sevice life of the gease has been damatically extended compaed to lithium-base geneal pupose gease (Fig. 13.8). (Special gease is available fo only the light-contact seal type.) Table 13.6 Test conditions Beaing (mm) Radial load (N) Axial load (N) Shaft speed (min -1 ) Atmosphee tempeatue ( C) Evaluated with deep goove ball beaing 624 24714 67 67 1 15 2 Duplex angula contact ball beaings HT seies HT type duplex angula contact ball beaings featue lage axial load capacity while maintaining the same dimensions as a standad angula contact ball beaing (contact angle: 3 ). Beaings smalle than the BST type ae available fo use in small poducts. Life atio 2 18 16 14 12 1 8 6 4 2 Lithium base geneal pupose gease ULTAGE seies (Special gease) Lithium base geneal pupose gease 1. ULTAGE seies 18.9 (Special gease) 18 times longe compaed to conventional type Fig. 13.8 Gease life atio (5) Gease leakage test Light-contact type seals eliminate gease leakage fom the beaing. (Fig. 13.9) Table 13.7 Test conditions Beaing (mm) Axial load (kn) Shaft speed (min -1 ) Atmosphee 2A-BST472-1BDFP4 472152 ows 3.9 123 unning fo two hous fo each step Room tempeatue Fig. 13.1 HT 3 Needle olle beaings with double-ow thust needle olle beaings AXN seies Needle olle beaings with double-ow thust cylindical olle beaings ARN seies AXN and ARN type beaings have thust needle olle o thust cylindical olle beaings on both sides of a adial needle olle beaing. The oute ing side face of the adial needle olle beaing is used as the aceway of both thust beaings. These beaings can withstand axial loads in both diections while maintaining compact designs. The adial needle olle beaings ae suitable fo heavy adial loads. The axial igidity of the AXN type is extemely enhanced since the thust needle olle beaings ae used fo axial loads. Likewise, the axial igidity of the ARN type is impoved. Since the axial load capacity of this type is lage than the AXN type, this type is suitable fo heavy axial loads. Oil lubication is ecommended fo the ARN type. Leaked gease quantity 2. 1.8 1.6 1.4 1.2 1.8.6.4.2 Lithium base geneal pupose gease ULTAGE seies (Special gease) Lithium base geneal pupose gease 1.77g ULTAGE seies.1g (Special gease) Fig. 13.11 AXN Fig. 13.9 Gease leakage Fig. 13.12 ARN 279

NTN Ball Scew Suppot Beaings 4 Beaing designations The pat numbe fo a ballscew beaing consists of a type code, dimension code, and vaious suffixes. 2A-BST type 2A - BST 2 47 1B LXL DBT P4 / L588 Gease code L588: Uea based special gease Toleance class code P5: JIS Class 5 (equivalent) P4: JIS Class 4 (equivalent) UP: NTN Class Aangement code Seal code LXL:Light contact ubbe seals Identification code Peload code and added numbe -1B: Standad peload -11B: Light peload Outside diamete (mm) Nominal boe diamete (mm) Beaing type code Heat teatment HT type AXN and ARN type 74HTDF/GMP4 Toleance class code P5: JIS class 5 P4: JIS class 4 Intenal cleaance code GM: Medium peload GH: Heavy peload Aangement code Intenal design code Nominal boe diamete (See dimension tables.) Dimension seies code Beaing type code AXN 252 P4 Toleance class code P5: JIS Class 5 P4: JIS Class 4 Dimension Boe diamete, outside diamete (mm) Beaing type code AXN ARN 28

NTN Ball Scew Suppot Beaings 5 Beaing pecision The pecision of ballscew beaings vaies depending on the beaing type. 2A-BST type Available in NTN class 5 (toleance class code P5), class 4 (toleance class code P4) each complying with JIS standads, and gade UP (toleance class code UP). The classes ae listed in ascending ode. 7HT type Same pecision as the main spindle angula contact ball beaing. Classes 5 and 4 ae available. AXN, ARN types NTN standad classes 4 and 5 complying with the JIS standads. Accuacy of 2A-BST type Table 13.8 Inne ings Nominal boe Single plane mean boe diamete diamete deviation d Δdmp ove incl. 1 18 3 5 18 3 5 8 Class 5 Class 4 1 Class UP 1 Class 5 Class 4 Class UP Class 5 Class 4 Class UP Class 5 Class 4 Class UP Class 5 Class 4 Class UP Class 5 Class 4 Class UP high low high low high low max max max max high low high low high low 5 4 6 5 8 6 9 7 3.5 3.5 5 5 Width vaiation VBs 5 5 5 6 2.5 2.5 3 4 2 2 2 3 Radial unout Kia 3.5 4 5 5 3 3 4 4 2 2 3 4 Face unout with boe Sd 7 8 8 8 3 4 4 5 2 3 3 4 Axial unout Sia 5 5 6 7 3 3 3 4 2 2 2 3 Unit: Width deviation ΔBs 12 12 12 12 12 12 1 1 1 15 15 15 1The toleance of outside diamete deviation Δds applicable to classes 4 and UP is the same as the toleance of single plane mean outside diamete deviation Δdmp. Table 13.9 Oute ings Nominal boe diamete d Single plane mean outside diamete deviation ΔDmp Width vaiation VCs Class 5 Class 4 1 Class UP 1 Class 5 Class 4 Class UP ove incl. high low high low high low max Radial unout Kea Class 5 Class 4 Class UP max Outside suface inclination SD Class 5 Class 4 Class UP max Axial unout Sea All classes Unit: Width deviation ΔCs All classes 3 5 8 5 8 12 7 9 1 6 7 8 5 5 7 5 6 8 2.5 3 4 2 2 3 7 8 1 5 5 6 4 4 4 8 8 9 4 4 5 3 3 4 Identical to Si elative to d on the same beaing. Identical to ΔBS elative to d on the same beaing. 2 The toleance of outside diamete deviation ΔDs applicable to classes 4 and UP is the same as the toleance of single plane mean outside diamete deviation ΔDmp. 281

NTN Ball Scew Suppot Beaings Accuacy of HT type Table 13.1 Inne ings Nominal boe diamete d Single plane mean boe diamete deviation Δdmp Class 5 Class 4 1 Class 2 1 ove incl. high low high low high low 2.5 1 18 3 1 18 3 5 5 5 6 8 4 4 5 6 2.5 2.5 2.5 2.5 5 5 6 8 Single adial plane boe diamete vaiation Vdp Diamete seies 9 Diamete seies,2 Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max max 4 4 5 6 2.5 2.5 2.5 2.5 4 4 5 6 3 3 4 5 2.5 2.5 2.5 2.5 Mean boe diamete deviation Vdmp Class 5 Class 4 Class 2 max 1 The toleance of boe diamete deviation Δds, applicable to classes 4 and 2, is the same as the toleance of mean boe diamete deviation Δdmp. This applies to the diamete seies o 2 fo class 4, and all the diamete seies fo class 2. 2 Applicable to individual beaing ings manufactued fo duplex beaings. 3 3 3 4 2 2 2.5 3 1.5 1.5 1.5 1.5 Inne ing adial unout Kia Class 5 Class 4 Class 2 max 4 4 4 5 2.5 2.5 3 4 1.5 1.5 2.5 2.5 Table 13.11 Oute ings Nominal outside diamete D Single plane mean outside diamete deviation ΔDmp Class 5 Class 4 3 Class 2 3 ove incl. high low high low high low Single adial plane outside diamete deviation VDp Diamete seies 9 Diamete seies,2 Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max max Mean single plane outside diamete deviation VDmp Class 5 Class 4 Class 2 max Oute ing adial unout Kea Class 5 Class 4 Class 2 max 18 3 5 3 5 8 6 7 9 5 6 7 4 4 4 6 7 9 5 6 7 4 4 4 5 5 7 4 5 5 4 4 4 3 4 5 2.5 3 3.5 2 2 2 6 7 8 4 5 5 2.5 2.5 4 8 12 1 8 5 1 8 5 8 6 5 5 4 2.5 1 6 5 3The toleance of outside diamete deviation ΔDs, applicable to classes 4 and 2, is the same as the toleance of mean outside diamete deviation ΔDmp. This applies to the diamete seies o 2 fo class 4, and all the diamete seies fo class 2. 282

NTN Ball Scew Suppot Beaings Face unout with boe Sd Class 5 Class 4 Class 2 max Axial unout Sia Width vaiation ΔBs Duplex Single beaing beaing 2 Class 5 Class 4 high low high low high low Class 5 Class 4 Class 2 Class 5 Class 4 Class 2 max Unit: Width vaiation VBs Class 5 Class 4 Class 2 max 7 7 8 3 3 4 1.5 1.5 1.5 7 7 8 3 3 4 1.5 1.5 2.5 4 8 12 4 8 12 25 25 25 5 5 5 2.5 2.5 2.5 1.5 1.5 1.5 8 4 1.5 8 4 2.5 12 12 25 5 3 1.5 Unit: Outside suface inclination SD Class 5 Class 4 Class 2 max Axial unout Sea Class 5 Class 4 Class 2 max Width vaiation ΔCs All classes Width vaiation VCs Class 5 Class 4 Class 2 max 8 8 8 4 4 4 1.5 1.5 1.5 8 8 1 5 5 5 2.5 2.5 4 Identical to ΔBs elative to d of the same beaing 5 5 6 2.5 2.5 3 1.5 1.5 1.5 9 5 2.5 11 6 5 8 4 2.5 283

NTN Ball Scew Suppot Beaings Accuacy of AXN and ARN type Table 13.12 Inne ing and oute ing Nominal beaing boe dia. d o nominal beaing outside dia. D Deviation of mean boe 1 diamete in a single plane Δdmp Thust inne 1 ing boe dia. deviation Δdis Class 5 Class 4 Ove Incl. High Low High Low High Low 18 3 5 8 12 3 5 8 12 15 6 8 9 1Applicable only to dimension d. 5 6 7 614 755 96 Class 5 Class 4 High Low High Low 9 1 11 2Applicable only to dimension D. Deviation of mean outside 2 diamete in a single plane ΔDmp 7 8 9 Beaing height deviation ΔTs High Low 37 Oute ing width deviation High ΔCs Low 13 Radial 1 inne ing adial unout Kia Class 5 Class 4 Max. 4 5 5 3 4 4 Oute 2 ing adial unout Kea Class 5 Class 4 Max. 8 1 11 5 6 7 Pependiculaity 2 of oute ing outside suface with espect to the face SD Class 5 Class 4 Max. 8 9 1 4 5 5 Unit: Thust inne ing 1 and oute ing 2 thickness vaiation Sia, Sea Class 5 Class 4 Max. 3 3 4 4 5 2 2 3 3 4 6 Basic peload and axial igidity Basic peloads fo each type of ball scew suppot beaings ae shown in the dimension tables. The peloads can be alteed depending on the equied igidity. Contact NTN in such a case. In the AXN and ARN types, igidity is nomally enhanced by tightening the thust beaing ings to supply peload. Peloads and toques ae shown in the dimensions tables to help contol basic peload. A beaing that allows peset peload by tightening the beaing aceways to adjust the cleaance A between the both thust beaing ings and adial beaing ings (Fig. 13.13) is also available. Ask NTN fo details. Axial igidity of the 2A-BST type DB duplex aangement and the AXN type at the basic peload ae shown in Figs. 13.14 and 13.15. (Notes) Axial displacement is measued unde standad peloaded. 3 Axial displacementm 25 2 15 1 5 2A-BST1747-1B,2A-BST247-1B 2A-BST3572-1B,2A-BST472-1B 2A-BST2562-1B,2A-BST362-1B 2A-BST49-1B 2A-BST5512-1B,2A-BST612-1B 1 2 Axial loadkn 1KN=12kgf 2A-BST451-1B, 2A-BST51-1B, 2A-BST551-1B Fig. 13.14 BST type igidity chat Fig. 13.13 AXN type axial displacementm 1 5 AXN252 AXN357 AXN2557 AXN475 AXN362 AXN458 AXN59 1 2 3 Axial loadkn 1KN=12kgf Fig. 13.15 AXN type igidity chat 284

NTN Ball Scew Suppot Beaings 7 Shaft and housing fits Recommended fit and toleances of shaft and housing shoulde squaeness ae shown in Figs. 13.13 and 13.14. Table 13.13 Shaft and housing fits Table 13.14 Toleance of shoulde squaeness Unit: Type code Shaft outside diamete Fit Housing Diamete classification mm ove incl. BST HT Type code AXNARN BST HT AXN ARN h5 j5 H6 J6 3 8 12 3 8 12 18 4 4 5 4 4 4 5 6 7 8 Applications The BST type is mainly installed on ball scews of machine tool feed systems, and two to fou ow aangements ae used in many cases. This type is popula because geased sealed angula contact ball beaings ae easy to handle. The back-to-back duplex aangement is commonly used because it allows acquisition of the specified peload by tightening the inne ing. The face-to-face duplex aangement may be used if moe pecise alignment is equied. It is not commonly used fo machine tools. Examples of beaing aangement ae shown in Figs. 13.16 and 13.17. Fig. 13.16 Fig. 13.17 285

NTN Ball Scew Suppot Beaings 9 Stating toque of 2A-BST type Refeence stating toque values fo 2A-BST beaings ae shown in Tables 13.15 and 13.16. Table 13.15 Open type BST and 2A-BST BST17X47-1B 2A-BST17X47-1B BST2X47-1B 2A-BST2X47-1B BST25X62-1B 2A-BST25X62-1B BST3X62-1B 2A-BST3X62-1B BST35X72-1B 2A-BST35X72-1B BST4X72-1B 2A-BST4X72-1B BST4X9-1B 2A-BST4X9-1B BST45X75-1B 2A-BST45X75-1B BST45X1-1B 2A-BST45X1-1B BST5X1-1B 2A-BST5X1-1B BST55X1-1B 2A-BST55X1-1B DF type DB type 175 1.8 175 1.8 35 3.1 35 3.1 38 3.9 38 3.9 96 9.8 43 4.4 1165 11.9 1165 11.9 1165 11.9 Stating toque (efeence) Nmmkgfcm DFT type DBT type 245 2.5 245 2.5 42 4.3 42 4.3 51 5.2 51 5.2 135 13.3 58 5.9 158 16.1 158 16.1 158 16.1 DTFT type DTBT type 355 3.6 355 3.6 615 6.3 615 6.3 755 7.7 755 7.7 193 19.7 86 8.8 234 23.9 234 23.9 234 23.9 DFTT type DBTT type 275 2.8 275 2.8 47 4.8 47 4.8 59 6. 59 6. 15 15.3 665 6.8 1815 18.5 1815 18.5 1815 18.5 Table 13.16 Light-contact sealed type BST LXL/L588 and 2A-BST LXL/L588 BST17X47-1BLXL 2A-BST17X47-1BLXL BST2X47-1BLXL 2A-BST2X47-1BLXL BST25X62-1BLXL 2A-BST25X62-1BLXL BST3X62-1BLXL 2A-BST3X62-1BLXL BST35X72-1BLXL 2A-BST35X72-1BLXL BST4X72-1BLXL 2A-BST4X72-1BLXL BST4X9-1BLXL 2A-BST4X9-1BLXL BST45X75-1BLXL 2A-BST45X75-1BLXL BST45X1-1BLXL 2A-BST45X1-1BLXL BST5X1-1BLXL 2A-BST5X1-1BLXL BST55X1-1BLXL 2A-BST55X1-1BLXL DF type DB type 215 2.2 215 2.2 365 3.7 365 3.7 46 4.7 46 4.7 1155 11.8 52 5.3 14 14.3 14 14.3 14 14.3 Stating toque (efeence) Nmmkgfcm DFT type DTFT type DFTT type DBT type DTBT type DBTT type 295 3. 295 3. 51 5.2 51 5.2 61 6.2 61 6.2 157 16. 695 7.1 189 19.3 189 19.3 189 19.3 42 4.3 42 4.3 745 7.6 745 7.6 9 9.2 9 9.2 2315 23.6 14 1.6 2815 28.7 2815 28.7 2815 28.7 355 3.4 355 3.4 57 5.8 57 5.8 75 7.28 75 7.2 185 18.4 85 8.2 2175 22.2 2175 22.2 2175 22.2 286

NTN Ball Scew Suppot Beaings! Recommended lubication specifications BST and HT ball scew suppot angula contact ball beaings ae geneally lubicated with gease. (BST LXL beaings with light-contact seals ae packed with gease.) AXN and ARN beaings ae geneally lubicated with ciculated oil. Gease lubication Recommended type of gease Lithium-mineal oil base geneal pupose gease of which base oil viscosity is high (fo example, Alvania Gease S2, Shell). Oil lubication Recommended type of oil Hydaulic oils o othe industial oils used fo lubication of sliding sufaces with viscosity gade ISO VG 68 o highe ae ecommended. Oil quantity Recommended oil quantity depends on the lubicating method. As a geneal guideline, the oil flow ate should be 5 to 1 cm 3 /min. Recommended gease fill 25% of the capacity shown in the dimensions tables Recommended gease filling method Refe to "6. Handling of Beaings, q Rinsing of beaings and gease filling" in the Technical Data section. 287

Ball Scew Suppot Beaings!1 Dimension tables Angula contact thust ball beaings fo ball scews BST seies Contact angle 6 d 17 6mm Dynamic equivalent axial load PaXFYFa Numbe of ows in beaing aangement 2 3 4 Numbe of ows subjected to axial load 1 2 1 2 3 1 2 3 4 Fa / F2.17 X 1.9 1.43 2.32 1.17 1.9 2.52 Y.55.76.35.88.55.26 Fa / F2.17 X.92.92.92.92.92.92.92.92.92 Y 1 1 1 1 1 1 1 1 1 D D1 d2 B 1 d d1d2 6 Static equivalent axial load PoaFa3.98F Open type Contact sealed type Pat numbe 主要寸法 Bounday dimensions 基本動定格荷重 Ca Basic dynamic 基本静定格荷重 ated load Ca Coa Basic static ated 呼び番号 load Coa kn kn mm mm kgf kn kgf kn 1 列でアキシアル W ow When thee owwhenkgf one owwhen two owwhen thee ow kgf d D B s min 1 d 1s min D 1 荷重を受ける場合 B s min 1 bl1s load min 1 beas axial 1 loadbeas2axial loadbeas 3 axial loadbeas 1 axial load2 3 BST17X47-1B 24.3 39.5 52.5 37.5 75. 113 17 47 15 1.6 BST17X47-1BLXL 2 47 4 5 35 3 85 7 65 11 5 BST2X47-1B 24.3 39.5 52.5 37.5 75. 113 2 47 15 1.6 BST2X47-1BLXL 2 47 4 5 35 3 85 7 65 11 5 BST25X62-1B 29.2 47.5 63. 59. 118 177 25 62 15 1.6 BST25X62-1BLXL 2 98 4 85 6 45 6 5 12 1 18 1 BST3X62-1B 29.2 47.5 63. 59. 118 177 3 62 15 1.6 BST3X62-1BLXL 2 98 4 85 6 45 6 5 12 1 18 1 BST35X72-1B 31. 5.5 67. 7. 14 21 35 72 15 1.6 BST35X72-1BLXL 3 15 5 15 6 85 7 15 14 3 21 4 BST4X72-1B 31. 5.5 67. 7. 14 21 4 72 15 1.6 BST4X72-1BLXL 3 15 5 15 6 85 7 15 14 3 21 4 BST4X9-1B 58.5 95. 126 13 261 39 4 9 2 1.6 BST4X9-1BLXL 6 9 7 12 9 13 3 26 6 4 BST45X75-1B 32. 52. 69.5 77.5 155 232 45 75 15 1.6 BST45X75-1BLXL 3 3 5 35 7 1 7 9 15 8 23 7 BST45X1-1B 62. 11 134 153 35 459 45 1 2 1.6 BST45X1-1BLXL 6 35 1 3 13 7 15 6 31 47 BST5X1-1B 62. 11 134 153 35 459 5 1 2 1.6 BST5X1-1BLXL 6 35 1 3 13 7 15 6 31 47 BST55X1-1B 62. 11 134 153 35 459 55 1 2 1.6 BST55X1-1BLXL 6 35 1 3 13 7 15 6 31 47 BST55X12-1B 66.5 18 143 183 365 55 55 12 2 1.6 BST55X12-1BLXL 6 75 11 14 6 18 7 37 5 56 BST6X12-1B 66.5 18 143 183 365 55 6 12 2 1.6 BST6X12-1BLXL 6 75 11 14 6 18 7 37 5 56 1 Minimum allowable value fo chamfe dimension o 1. 288

Ball Scew Suppot Beaings When one ow beas axial load DB) When two ows bea axial load DBT) When two ows bea axial load DTBT) When thee ows bea axial load DBTT) Dimensions Space Static axial load capacity capacity mm cm 3 kn Single-ow kgf d1 d2 D1 D2 (appox.) 1 2 3 29.9 29.9 44.4 44.4 52.4 52.4 64.8 58.4 75.8 75.8 75.8 9.8 9.8 27.1 4.8 25.7 51.5 77. 37.1 3.3 25.7 41.2 2 62 5 25 7 85 27.1 4.8 25.7 51.5 77. 37.1 3.3 25.7 41.2 2 62 5 25 7 85 41.6 55.3 4. 8.5 121 51.6 4.6 4.2 55.7 4 1 8 2 12 3 41.6 55.3 4. 8.5 121 51.6 4.6 4.2 55.7 4 1 8 2 12 3 49.6 63.2 47.5 95. 143 59.6 5.4 48.2 63.7 4 85 9 7 14 6 49.6 63.2 47.5 95. 143 59.6 5.4 48.2 63.7 4 85 9 7 14 6 6.7 8.4 88.5 177 265 75.2 12 59.1 81.6 9 18 27 55.6 69.2 52.5 177 158 65.6 6. 54.2 69.7 5 35 1 7 16 1 71.7 91.4 14 28 315 86.2 13 7.1 92.6 1 6 21 2 32 71.7 91.4 14 28 315 86.2 13 7.1 92.6 1 6 21 2 32 71.7 91.4 14 28 315 86.2 13 7.1 92.6 1 6 21 2 32 86.7 16.4 124 249 375 11.2 16 85.1 17.6 12 7 25 4 38 86.7 16.4 124 249 375 11.2 16 85.1 17.6 12 7 25 4 38 289

Ball Scew Suppot Beaings Angula contact thust ball beaings fo ball scews 2A-BST seies Contact angle 6 d 17 6mm Dynamic equivalent axial load PaXFYFa Numbe of ows in beaing aangement 2 3 4 Numbe of ows subjected to axial load 1 2 1 2 3 1 2 3 4 Fa / F2.17 X 1.9 1.43 2.32 1.17 1.9 2.52 Y.55.76.35.88.55.26 Fa / F2.17 X.92.92.92.92.92.92.92.92.92 Y 1 1 1 1 1 1 1 1 1 D D1 d2 B 1 d d1d2 6 Static equivalent axial load PoaFa3.98F Open type Contact sealed type Pat numbe 主要寸法 Bounday dimensions 基本動定格荷重 Ca Basic dynamic 基本静定格荷重 ated load Ca Coa Basic static ated 呼び番号 load Coa kn kn mm mm kgf kn kgf kn 1 列でアキシアル W ow When thee owwhenkgf one owwhen two owwhen thee ow kgf d D B s min 1 d 1s min D 1 荷重を受ける場合 B s min 1 bl1s load min 1 beas axial 1 loadbeas2axial loadbeas 3 axial loadbeas 1 axial load2 3 2A-BST17X47-1B 24.3 39.5 52.5 37.5 75. 113 17 47 15 1.6 2A-BST17X47-1BLXL 2 47 4 5 35 3 85 7 65 11 5 2A-BST2X47-1B 24.3 39.5 52.5 37.5 75. 113 2 47 15 1.6 2A-BST2X47-1BLXL 2 47 4 5 35 3 85 7 65 11 5 2A-BST25X62-1B 29.2 47.5 63. 59. 118 177 25 62 15 1.6 2A-BST25X62-1BLXL 2 98 4 85 6 45 6 5 12 1 18 1 2A-BST3X62-1B 29.2 47.5 63. 59. 118 177 3 62 15 1.6 2A-BST3X62-1BLXL 2 98 4 85 6 45 6 5 12 1 18 1 2A-BST35X72-1B 31. 5.5 67. 7. 14 21 35 72 15 1.6 2A-BST35X72-1BLXL 3 15 5 15 6 85 7 15 14 3 21 4 2A-BST4X72-1B 31. 5.5 67. 7. 14 21 4 72 15 1.6 2A-BST4X72-1BLXL 3 15 5 15 6 85 7 15 14 3 21 4 2A-BST4X9-1B 58.5 95. 126 13 261 39 4 9 2 1.6 2A-BST4X9-1BLXL 6 9 7 12 9 13 3 26 6 4 2A-BST45X75-1B 32. 52. 69.5 77.5 155 232 45 75 15 1.6 2A-BST45X75-1BLXL 3 3 5 35 7 1 7 9 15 8 23 7 2A-BST45X1-1B 62. 11 134 153 35 459 45 1 2 1.6 2A-BST45X1-1BLXL 6 35 1 3 13 7 15 6 31 47 2A-BST5X1-1B 62. 11 134 153 35 459 5 1 2 1.6 2A-BST5X1-1BLXL 6 35 1 3 13 7 15 6 31 47 2A-BST55X1-1B 62. 11 134 153 35 459 55 1 2 1.6 2A-BST55X1-1BLXL 6 35 1 3 13 7 15 6 31 47 2A-BST55X12-1B 66.5 18 143 183 365 55 55 12 2 1.6 2A-BST55X12-1BLXL 6 75 11 14 6 18 7 37 5 56 2A-BST6X12-1B 66.5 18 143 183 365 55 6 12 2 1.6 2A-BST6X12-1BLXL 6 75 11 14 6 18 7 37 5 56 1 Minimum allowable value fo chamfe dimension o 1. 29

Ball Scew Suppot Beaings When one ow beas axial load DB) When two ows bea axial load DBT) When two ows bea axial load DTBT) When thee ows bea axial load DBTT) Dimensions Space Static axial load capacity capacity mm cm 3 kn Single-ow kgf d1 d2 D1 D2 (appox.) 1 2 3 29.9 29.9 44.4 44.4 52.4 52.4 64.8 58.4 75.8 75.8 75.8 9.8 9.8 27.1 4.8 25.7 51.5 77. 37.1 3.3 25.7 41.2 2 62 5 25 7 85 27.1 4.8 25.7 51.5 77. 37.1 3.3 25.7 41.2 2 62 5 25 7 85 41.6 55.3 4. 8.5 121 51.6 4.6 4.2 55.7 4 1 8 2 12 3 41.6 55.3 4. 8.5 121 51.6 4.6 4.2 55.7 4 1 8 2 12 3 49.6 63.2 47.5 95. 143 59.6 5.4 48.2 63.7 4 85 9 7 14 6 49.6 63.2 47.5 95. 143 59.6 5.4 48.2 63.7 4 85 9 7 14 6 6.7 8.4 88.5 177 265 75.2 12 59.1 81.6 9 18 27 55.6 69.2 52.5 177 158 65.6 6. 54.2 69.7 5 35 1 7 16 1 71.7 91.4 14 28 315 86.2 13 7.1 92.6 1 6 21 2 32 71.7 91.4 14 28 315 86.2 13 7.1 92.6 1 6 21 2 32 71.7 91.4 14 28 315 86.2 13 7.1 92.6 1 6 21 2 32 86.7 16.4 124 249 375 11.2 16 85.1 17.6 12 7 25 4 38 86.7 16.4 124 249 375 11.2 16 85.1 17.6 12 7 25 4 38 291

Ball Scew Suppot Beaings!2 Peload and axial sping constant Angula contact thust ball beaings fo ball scews BST Type, 2A-BST Type Contact angle 6 d 17 6mm Pat numbe BST17X47 2A-BST17X47 BST2X47 2A-BST2X47 BST25X62 2A-BST25X62 BST3X62 2A-BST3X62 BST35X72 2A-BST35X72 BST4X72 2A-BST4X72 BST4X9 2A-BST4X9 BST45X75 2A-BST45X75 BST45X1 2A-BST45X1 BST5X1 2A-BST5X1 BST55X1 2A-BST55X1 BST55X12 2A-BST55X12 BST6X12 2A-BST6X12 Basic peload:-1b Double-ow (DF/DB types) Tiple-ow (DFT/DBT types) Fou-ow (DTFT/DTBT types) Peload Axial sping constant Peload Axial sping constant Peload Axial sping constant N kgf N/μm kgf/μm N kgf N/μm kgf/μm N kgf N/μm kgf/μm 2 6 21 635 65 2 84 29 93 95 4 1 42 1 27 13 2 6 21 635 65 2 84 29 93 95 4 1 42 1 27 13 3 25 33 98 1 4 4 45 1 37 14 6 45 66 1 96 2 3 25 33 98 1 4 4 45 1 37 14 6 45 66 1 96 2 3 8 39 113 115 5 2 53 1 62 165 7 65 78 2 26 23 3 8 39 113 115 5 2 53 1 62 165 7 65 78 2 26 23 7 5 72 147 15 9 6 98 2 11 215 14 1 1 44 2 94 3 4 2 43 123 125 5 7 58 1 77 18 8 45 86 2 5 255 8 25 84 172 175 11 2 1 14 2 45 25 16 5 1 68 3 45 35 8 25 84 172 175 11 2 1 14 2 45 25 16 5 1 68 3 45 35 8 25 84 172 175 11 2 1 14 2 45 25 16 5 1 68 3 45 35 9 9 1 1 21 25 13 4 1 37 2 89 295 19 8 2 2 4 5 415 9 9 1 1 21 25 13 4 1 37 2 89 295 19 8 2 2 4 5 415 NOTE) Peload values ae those obtained fom matched beaings. Sping constants mean axial sping constants on beaings subjected to the peloads listed in the table. 292

Ball Scew Suppot Beaings Pat numbe BST17X47 2A-BST17X47 BST2X47 2A-BST2X47 BST25X62 2A-BST25X62 BST3X62 2A-BST3X62 BST35X72 2A-BST35X72 BST4X72 2A-BST4X72 BST4X9 2A-BST4X9 BST45X75 2A-BST45X75 BST45X1 2A-BST45X1 BST5X1 2A-BST5X1 BST55X1 2A-BST55X1 BST55X12 2A-BST55X12 BST6X12 2A-BST6X12 Light peload:-11b Double-ow (DF/DB types) Tiple-ow (DFT/DBT types) Fou-ow (DTFT/DTBT types) Peload Axial sping constant Peload Axial sping constant Peload Axial sping constant N kgf N/μm kgf/μm N kgf N/μm kgf/μm N kgf N/μm kgf/μm 1 12 49 5 1 37 14 735 75 1 96 2 98 1 1 12 49 5 1 37 14 735 75 1 96 2 98 1 1 47 15 735 75 1 96 2 1 8 11 2 94 3 1 47 15 1 56 159 735 75 2 16 22 1 8 11 3 15 32 1 47 15 1 76 18 885 9 2 35 24 1 27 13 3 55 36 1 77 18 1 86 19 885 9 2 55 26 1 27 13 3 7 38 1 77 18 2 37 24 98 1 3 23 33 1 47 15 4 7 48 2 6 21 2 2 98 1 2 65 27 1 37 14 3 9 4 1 96 2 2 88 29 1 18 12 3 8 39 1 77 18 5 7 58 2 45 25 3 1 31 1 18 12 4 1 42 1 77 18 6 1 62 2 45 25 3 1 31 1 18 12 4 1 42 1 77 18 6 1 62 2 45 25 3 52 36 1 37 14 4 8 49 2 6 21 7 5 72 2 84 29 3 52 36 1 37 14 4 8 49 2 6 21 7 5 72 2 84 29 293

Ball Scew Suppot Beaings Duplex angula contact ball beaings (HT seies) Contact angle 3 d 6 4mm B B Dynamic equivalent axial load PaXFYFa 1 1 Numbe of ows in beaing aangement Numbe of ows subjected to axial load X Fa / F.8 Y X Fa / F.8 Y 1 2.81.63.51 1.51 1.61.88.51 1 3 4 2 1 2 3 1 2 3 4.99.4.51 1.51 1.5 1.2.51 1.81.63.51 1 1.7.3.51 1.51 1 D2 d1 d D Back-to-back (DB) Example diagam 1 Pat numbe Bounday dimensions Basic load atings Dimensions Diagam dynamic static dynamic static mm kn kgf mm Back-to-back Face-to-face (DB) (DF) d D 2B s min 1 1s min 1 Ca Coa Ca Coa d1 d2 D1 D2 79M6ADB 79M6ADF 6 15 1.2.1 2.5 2.9 29 213 9.9 8.4 11.1 12.9 1 7M6DB 7M6DF 6 17 12.3.15 2.67 2.41 273 246 9.8 13.2 14.8 2 79M8ADB 79M8ADF 8 19 12.3.15 2.93 3.25 298 335 12.6 1.9 14.4 16.4 1 7M8DB 7M8DF 8 22 14.3.15 4.4 4.4 45 445 12.8 17.2 19.1 2 7HTDB 7HTDF 1 26 16.3.15 6.1 6.3 62 64 15.5 2.3 22.7 2 71HTDB 71HTDF 12 28 16.3.15 6.65 7.45 68 76 18.1 22.9 25.4 2 72HTDB 72HTDF 15 32 18.3.15 7.6 9.5 775 97 21.1 25.9 28.4 2 723HTDB 723HTDF 17 4 24.6.3 13.8 16.4 1 4 1 67 25. 32. 36.2 2 74HTDB 74HTDF 2 42 24.6.3 12.8 17. 1 3 1 73 28.4 34.7 38.1 2 724HTDB 724HTDF 2 47 28 1..6 17.9 23.1 1 83 2 36 3.5 38.6 42.7 2 725HTDB 725HTDF 25 52 3 1..6 2.2 28.8 2 6 2 94 35. 43. 47.2 2 726HTDB 726HTDF 3 62 32 1..6 28.1 41.5 2 86 4 2 41.7 51.4 56.3 2 728HTDB 728HTDF 4 8 36 1.1.6 44. 71. 4 5 7 2 54. 66. 72.2 2 1 Minimum allowable value fo chamfe dimension o 1. 2 The numbe of ows means the numbe of beaings that bea the axial load. 3 Peload values ae those obtained fom matched beaings. 4 Sping constants mean axial sping constants on beaings subjected to the peloads listed in the table. 294

Ball Scew Suppot Beaings B B 2B 2B 1 1 1 1 D1 d2 d D D2 d1 d D D1 d1 d D Face-to-face (DF) Example diagam 1 Back-to-back (DB) Example diagam 2 Face-to-face (DF) Static axial load 2 Medium peload (GM) Heavy peload (GH) Stating Stating capacity Peload 3 Axial sping constant 4 toque Peload 3 Axial sping constant 4 toque kn kgf N kgf N/μm kgf/μm N mm (appox.) N kgf N/μm kgf/μm N mm (appox.) DB DBT DB DBT DB DBT DB DBT DB DBT DB DBT Single ow Double ow DF DFT DF DFT DF DFT DF DFT DF DFT DF DFT 1.83 187 3.66 374 2 2 27 3 37 4. 55 5.6.5.8 39 4 53 5 48 5. 67 6.8 1. 1.2 1.1 13 2.2 26 29 3 39 4 37 4. 53 5.4 1. 1.4 49 5 67 7 45 4.5 65 6.6 1.5 2.1 2.14 219 4.28 438 29 3 39 4 48 5. 68 6.9 1. 1.4 59 6 8 8.1 62 6.5 88 9. 1.5 2.1 1.53 156 3.6 312 49 5 67 7 52 5.5 75 7.6 1.5 2.2 98 1 133 14 67 7. 97 9.9 3. 4.2 3.1 314 6.2 628 147 15 2 2 82 8.5 116 11.8 5.5 7.3 196 2 266 27 92 9.5 13 13.3 8. 1.7 3.25 331 6.5 662 147 15 2 2 88 9. 125 12.8 6.5 8.6 196 2 266 27 116 12. 14 14.3 13. 17.3 4. 47 8. 814 147 15 2 2 1 1. 141 14.3 6. 7.9 294 3 4 41 131 13.5 187 19.1 14. 19. 5.85 595 11.7 1 19 294 3 4 41 126 13. 18 18.4 15. 2.4 39 4 53 54 141 14.5 2 2.4 21. 28. 7.55 77 15.1 1 54 294 3 4 41 139 14. 199 2.3 14. 19.2 49 5 665 68 17 17.5 242 24.7 27. 36.4 9.5 97 19. 1 94 49 5 665 68 168 17. 24 24.5 29. 38.6 785 8 17 19 23 2.5 289 29.5 47. 64.1 11.5 1 17 23. 2 34 49 5 665 68 188 19. 268 27.3 26. 35.8 785 8 17 19 226 23. 322 32.9 5. 67.7 16.3 1 66 32.6 3 32 49 5 665 68 197 2. 28 28.6 31. 42. 785 8 17 19 235 24. 335 34.2 5. 67.4 27.1 2 77 54.2 5 54 885 9 12 122 272 27.5 388 39.6 61. 82.4 147 15 2 24 331 34. 472 48.2 112. 151.1 295

Ball Scew Suppot Beaings Needle olle beaings with double-diection thust needle olle beaings (AXN seies) d 2 5mm T C DW 1 D d dw F D1 Pat Bounday dimensions Basic load atings numbe dynamic static dynamic static dynamic static mm adial adial axial d dw D D1 T C F Dw s min 1 1s min 1 kn kgf kn C Co C Co Ca Coa +.61 AXN252 2 2 52 42 4 16 25 2.6.6 15.1 22.4 1 54 2 28 14.6 58. +.4.2.5.37.13 +.61 AXN2557 25 25 57 47 44 2 3 2.6.6 22.1 34. 2 26 3 5 16.3 69.5 +.4 +.61 AXN362 3 3 62 52 44 2 35 2.6.6 24.8 41.5 2 52 4 25 17.8 81.5 +.4 +.75 AXN357 35 35 7 6 48 2 4 3 1.6 26.4 47. 2 7 4 8 27.4 11 +.5 +.75 AXN475 4 4 +.5 75 65 48 2 45 3 1.6 28. 52.5 2 86 5 4 29.8 128 +.75 AXN458 45 45 8 7 54 25 5 3 1.6 38.5 74.5 3 95 7 55 31.5 143 +.5 +.75 AXN59 5 5 9 78 54 25 55 3 1.6 41. 82. 4 15 8 4 38. 186 +.5 1 Minimum allowable value fo cone adius dimension o 1. 2 Stating toque value elative to the standad peload. 296

Ball Scew Suppot Beaings 1a a Da da Basic load atings Limiting Radial Abutment and Peload Stating 2 Mass Pat dynamic static speeds cleaance fillet dimensions toque numbe axial min -1 μm mm N N mm kg kgf gease oil da Da as 1as Ca Coa lubication lubication min max min max max max (appox.) (appox.) 1 49 5 9 1 8 7 1 3 39 46.6.6 1 3 33.4 AXN252 1 66 7 1 1 5 6 1 3 44 51.6.6 1 45 4.52 AXN2557 1 82 8 3 1 4 5 5 1 4 5 56.6.6 1 6 55.59 AXN362 2 79 11 3 1 2 4 7 1 4 56 64 1.6 2 45 9.8 AXN357 3 5 13 1 1 1 4 3 1 4 62 69 1.6 2 65 1 5.89 AXN475 3 25 14 5 1 3 9 1 4 67 74 1.6 2 8 1 2 1. AXN458 3 85 19 9 3 5 15 5 75 83 1.6 3 4 1 6 1.42 AXN59 297

Ball Scew Suppot Beaings Needle olle beaings with double-diection thust cylindical olle beaings (ARN seies) d 2 7mm T C DW 1 D d dw F D1 Pat Bounday dimensions Basic load atings numbe dynamic static dynamic static dynamic static mm adial adial axial d dw D D1 T C F Dw s min 1 1s min 1 kn kgf kn +.61 +.4 +.61 +.4 +.61 +.4 +.61 +.4 +.61 +.4 +.61 +.4 +.75 +.5 +.75 +.5 +.75 +.5 +.75 +.5 +.75 +.5 +.75 +.5 +.75 +.5 +.75 +.5 +.9 +.6 +.9 +.6 +.9 +.6 +.9 +.6.2.5.37.13 1 Minimum allowable value fo cone adius dimension o 1. 2 Stating toque value elative to the standad peload. C Co C Co Ca Coa ARN252T2 2 2 52 42 46 16 25 5.6.6 15.1 22.4 1 54 2 28 27.3 68. ARN262 2 2 62 52 6 2 3 7.5 1.6 22.1 34. 2 26 3 5 53.5 129 ARN2557T2 25 25 57 47 5 2 3 5.6.6 22.1 34. 2 26 3 5 27.8 72.5 ARN2572 25 25 72 62 6 2 35 7.5 1.6 24.8 41.5 2 52 4 25 54.5 139 ARN362T2 3 3 62 52 5 2 35 5.6.6 24.8 41.5 2 52 4 25 31. 87. ARN38 3 3 8 68 66 2 4 9 1.6 26.4 47. 2 7 4 8 74.5 19 ARN357T2 35 35 7 6 54 2 4 6 1.6 26.4 47. 2 7 4 8 43. 121 ARN3585 35 35 85 73 66 2 45 9 1.6 28. 52.5 2 86 5 4 82. 222 ARN475T2 4 4 75 65 54 2 45 6 1.6 28. 52.5 2 86 5 4 45.5 135 ARN49 4 4 9 78 75 25 5 9 1.6 38.5 74.5 3 95 7 55 85. 238 ARN458T2 45 45 8 7 6 25 5 6 1.6 38.5 74.5 3 95 7 55 48. 15 ARN4515 45 45 15 9 82 25 55 11 1.6 41. 82. 4 15 8 4 121 34 ARN59 5 5 9 78 6 25 55 6 1.6 41. 82. 4 15 8 4 62.5 215 ARN511 5 5 11 95 82 25 6 11 1.1.6 41. 85. 4 2 8 7 125 365 ARN55115 55 55 115 1 82 25 65 11 1.1.6 44.5 98. 4 55 1 13 385 ARN612 6 6 12 15 82 25 7 11 1.1.6 45. 91.5 4 6 9 35 134 41 ARN65125 65 65 125 11 82 25 75 11 1.1.6 55. 14 5 6 1 6 138 435 ARN713 7 7 13 115 82 25 8 11 1.1.6 57. 119 5 8 12 2 142 46 298

Ball Scew Suppot Beaings 1a a Da da Basic load atings Limiting Radial Abutment and Peload Stating 2 Mass Pat dynamic static speeds cleaance fillet dimensions toque numbe axial min -1 μm mm N N mm kg kgf gease oil da Da as 1as Ca Coa lubication lubication min max min max max max (appox.) (appox.) 2 78 6 9 1 8 7 1 3 39 46.6.6 2 5 43.44 ARN252T2 5 45 13 1 1 5 6 1 3 48 56 1.6 4 95 1 15.91 ARN262 2 84 7 4 1 5 6 1 3 44 51.6.6 2 6 5.56 ARN2557T2 5 55 14 2 1 2 4 9 1 4 56 66 1.6 5 5 1 4 1.22 ARN2572 3 15 8 9 1 4 5 5 1 4 49 56.6.6 2 9 65.63 ARN362T2 7 6 19 4 1 1 4 4 1 4 63 73 1.6 6 9 2 1 1.54 ARN38 4 35 12 4 1 2 4 8 1 4 56 64 1.6 3 95 1 5.85 ARN357T2 8 35 22 6 1 4 1 1 4 68 77 1.6 7 6 2 5 1.67 ARN3585 4 65 13 8 1 1 4 4 1 4 61 69 1.6 4 2 1 25.93 ARN475T2 8 65 24 2 95 3 8 1 4 73 87 1.6 7 85 2 85 2.15 ARN49 4 9 15 3 1 4 1 4 66 74 1.6 4 45 1 55 1.16 ARN458T2 12 3 34 5 85 3 3 15 5 83 96 1.6 11 2 4 35 3.16 ARN4515 6 35 21 9 9 3 6 15 5 75 83 1.6 5 8 2 5 1.48 ARN59 12 8 37 8 3 1 15 5 88 11 1.6 11 6 4 9 3.38 ARN511 13 2 39 5 75 2 9 15 5 93 16 1.6 12 5 5 3.61 ARN55115 13 7 42 7 2 7 15 5 98 111 1.6 12 4 6 3.81 ARN612 14 1 44 5 65 2 6 15 5 13 116 1.6 12 8 6 5 4. ARN65125 14 5 47 65 2 5 15 5 16 121 1.6 13 2 7 4.25 ARN713 299

NTN Poducts 14. NTN Poducts Cam followes fo pallet change Cam followes ae often used on wok piece tansfe systems (such as pallet changes) of machine tools (such as machining centes) to handle the lage loads geneated by these systems. NTN offes vaious types of cam followes that include a eady-to-install cam followe optimized fo pallet changes. 2 Cam followe numbeing The pat numbe fo cam followes fo pallet changes is same as that of NTN special cam followes. KRX 61632-4 1 Stuctue and featues The oute ing wall thickness is maximized fo esistance to heavy load o impact load. NTN cam followes fo pallet changes featue a compact design and can be easily mounted by tightening a setscew. The oute diamete, oute ing width, and stud diamete ae identical to the dimensions of NTN's standad cam followes (KR type). Because cam followes fo pallet changes ae actuated less fequently, they do not need to be elubicated. The oil hole has been deleted. Cost is educed by emoving the gease hole and the thead fom the stud. 3 Accuacy The accuacy of NTN cam followes fo pallet change is same as that of NTN standad cam followes (JIS class ). 4 Fit Suffix Oveall length Oute dia. Stud dia. Type code Wall thickness of oute ing maximized Oil hole emoved fom stud The NTN pallet change cam followe has a special stud that is eadily secued with a setscew. As illustated below, a setscew locks the pallet change cam followe in the axial and cicumfeential diections. Setscew Oute diamete, oute ing width, and stud diamete ae identical to those of standad cam followe Thead emoved fom stud (to be secued with setscew) Fig. 14-2 Typical mounting aangement Fig. 14-1 Schematic of NTN pallet change cam followe 3

NTN Poducts 5 Radial intenal cleaance The adial cleaance of NTN cam followes fo pallet changes is same as that of NTN standad cam followes (Table 14-1). Table 14-1. Inne ing Nominal inscibed cicle diamete Fw Cleaance CN (nomal cleaance) ove incl. min max 3 6 1 18 3 6 1 18 3 5 3 5 5 1 1 17 2 25 3 4 6 Lubication NTN cam followes fo pallet changes ae pefilled with lithium based gease and can be used in a tempeatue ange of -25 to +1 C. Unde the assumption that the use does not pefom elubication with gease, the standad NTN pallet change cam followe does not have an oil hole fo elubication. (If necessay, the cam followe can be povided with an oil hole o a hole fo mounting a gease nipple.) Upon equest, NTN can also povide cam followes with a synthetic ubbe seal. Lubication between the outside suface of beaing and tack is also necessay. Failue to popely lubicate the outside suface of the cam followe could lead to pematue wea of the beaing. (Example application of NTN cam followes fo pallet change) Photo: coutesy of Tsudakoma Cop. 31