HepcoMotion Ball Bushings www.hepcomotion.com
Contents HepcoMotion Super Ball Bushings 1 HepcoMotion Standard Ball Bushings 1 SBE Closed Super Ball Bushing 2 SBEO Open Super Ball Bushing 3 CS Closed Pillow Block Super Ball Bushing 4 CSO Open Pillow Block Super Ball Busing 5 LME Closed Standard Ball Bushing 6 LME-OP Open Standard Ball Bushing 8 LME-L Extended Length Standard Ball Bushing 10 LMF-L Round Flange Long Version 12 LMK-L Square Flange Long Version 14 HepcoMotion Precision Linear Shaft 17 Metric Shaft Support Rails 18 Aluminium Shaft Supports 19 Housing and Shaft tolerance 20 Assembly 21 Load / Life 22 Lubrication 23 Part Number 24
Super Ball Bushing - European Standard Super European closed Super European open Super European pillow block closed Super European pillow block open SBE Bearing High load with selfaligning feature. SBEO Bearing High load with selfaligning feature. CS Block High load with selfaligning feature. CSO Block High load with selfaligning feature. Standard Ball Bushing Standard European Standard European Standard European Standard LME Steel construction for rigid mounting. Flanged Housing Open type LME OP Steel construction compatible with Hepco support rail. Extended Lenght LME L Steel construction for additional ridgity. Super Japanese Super Japanese LMF L Round Double Flange For higher ridgity. LMK L Square Double Flange For higher ridgity
HepcoMotion Super Ball Bushings Super ball bushings from HepcoMotion offer you 3 x load capacity which equates to 27 x the life of standard ball bushings with the same overall dimensions. Life (27X) Load capacity (3X) These high quality units consist of hardened steel segmented load bearing plates with precision ground ball tracks combined with a 0.5 deg self alignment feature. This ensures a uniform load distribution over the entire row of balls preventing point loading that shortens life. Self alignment feature The outer surface of the steel load bearing plates is designed with a curved surface that in turn allows the bushing to absorb misalignment caused by inaccuracies between the shaft and ball bushing. WON Super Ball Bushing Conventional Ball Bushing Table 1. Comparing Life and Load Capacity In addition to ensuring equal load distribution, the feature provides smooth entry and exit of the balls in and out of the loading area. The self alignment feature requires two super ball bushings to be mounted to one shaft in a conventional two parallel shaft arrangement. Super ball bushings are interchangeable with the ISO standard meaning all main dimensions, outside diameter, bore and length are the same. Super ball bushings will reduce preparation and assembly time as any shaft defl ection and inaccuracies in the machining process will be accommodated by the self alignment feature. Easy entry and exit feature that comes with the self aligning design ensures smooth movement. Ball retainers are made from a high grade polyamide maintaining low friction over the entire travel length. Friction coefficient of 0.001 with oil lubrication. Can operate at temperatures up to 100 deg c and speeds up to 3m/s acc 150m/sec 2 Fig 2. 0.5 of Self-Alignment Fig 3. Radial Clearance Adjustment HepcoMotion Standard Ball Bushings Standard ball bushings from HepcoMotion offer dimensional interchangeability with all major manufacturers and incorporate a rigid steel outer sleeve with 4 / 6 ball circuits depending on size. Ball retainers are made from high grade polyamide for superior performance and low friction. Load carrying row Non-load Carring row Hardened and ground outer sleeve LM Shaft Retainer Ball Rataining ring End seal 1 Fig 1. Linear Ball Bushing
SBE type European Super Ball Bushing Closed type without Seal without One Seal without Two Seal D D1 Dimensions Shaft No. Ball B B1 B2 d rows Basic Load Ratings dyn. C (N) stat. Co (N) weight (g) 26 60 120 184 342 586 2
SBEO type European Super Ball Bushing Open type without Seal without One Seal without Two Seal D D1 Dimensions Angle Shaft B B1 B2 E d No. Ball rows Basic Load Ratings dyn. C (N) stat. Co (N) weight (g) 3
CS type European Super Ball Bushing Pillow Block Closed type(with 1pc of SBE) Dimensions Mounting Dimensions Shaft No. Basic Load Ratings Ball dyn. stat. h E W L F G T B C K b S1 S2 d rows C Co (N) (N) weight (g) 204 340 636 970 1740 2922 4
CSO type European Super Ball Bushing Pillow Block Open type(with 1pc of SBEO) CSO 16UU CSO 16UU-B CSO 20UU CSO 20UU-B CSO 25UU CSO 25UU-B CSO 30UU CSO 30UU-B CSO 40UU CSO 40UU-B CSO 50UU CSO 50UU-B Dimensions Mounting Dimensions Shaft No. Ball h E W L F T h1 θ B C b S1 S2 D rows 22 25 30 35 45 50 26.5 30 39 43.5 54 66 53 60 78 87 108 132 43 54 67 79 91 113 35 42 51 60 77 88 8 10 13 15 20 25 9 9 11.5 14 19.5 22.5 68 55 57 57 56 40 45 60 68 86 54 108 26 32 40 45 58 50 13 18 22 22 26 34 M6 M8 M10 M10 - M5 - M6 - M8 - M8 - M12 M10 - M16 M12 16 20 25 30 40 50 4 5 5 5 5 5 Basic Load Ratings dyn. C (N) 1332 2371 4557 5644 9398 13857 stat. Co (N) 715 1274 2234 3018 4410 6860 weight (g) 160 280 552 846 1516 2546 5
LME Series - European Standard type No. of Ball circuit LM Series Open type No. of No. of Ball circuit Ball circuit Basic Load Ratings Dyn C (N) Stat. Co (N) Working Bore Diameter dr Tol. 6
D Dimensions (mm) L B Tol. Tol. Tol. W D1 h1 Wgt. (gf) Allowable Diametral Clearance 7
LM Series - Japanese Standard type No. of Ball circuit LM Series Open type No. of No. of Ball circuit Ball circuit Basic Load Ratings Dyn C (N) Stat. Co (N) Working Bore Diameter dr Tol. 8
D Dimensions (mm) L B Tol. Tol. Tol. W D1 h1 Wgt. (gf) Allowable Diametral Clearance 9
LME L Series Series No. of Ball Series circuit Working Bore Dimensions (mm) Basic Load Ratings Diameter D L B Wgt.* Dyn. Stat. C Co Tol. Tol. Tol. Tol. 10
LMF/K L Series - Japanese Circular type Square type No. of Ball circuit Allowable Basic Load Ratings Working Bore Wgt.* Diametral Diameter (g f ) Clearance Dyn. C (N) Stat. Co (N) dr Tol. 11
D L B Tol. Tol. Tol. Dimensions (mm) Sqiareness H PCD K W A F * d1 x d2 x h 12
Introducing the HepcoMotion Precision Linear Shaft Correct Shaft selection is vital if maximum performance is to be achieved from your linear system. Hepco Precision Shaft has been developed to provide excellent performance when used with either recirculating ball bushings or plane bearing technology. An extensive range of shaft materials are available and Hepco offers a full machining facility with fast turnaround. Shaft Options Shaft Type Metric Metric Carbon Steel CK53 Hardened and Ground Metric Stainless Steel (400 series) Hardened and Ground Metric Soft Stainless Steel (300 Series) Ground REF Hardness RC TOL NIM-- 60 h6 NIM-- SS NIM-- SS316 50 h6 X h6 Diameter Options 5 6 8 10 12 16 20 25 30 40 50 60 80 Metric Hardcoat Anodised Aluminium NIMA-- X h6 Shaft Type Imperial Metric Carbon Steel CK53 Hardened and Ground Metric Stainless Steel (400 series) Hardened and Ground Metric Soft Stainless Steel (300 Series) Ground Metric Hardcoat Anodised Aluminium REF Hardness RC TOL NIL 60 Class L NIL-- SS NIL-- SS316 50 Class L X Class L NILA-- X Class L Diameter Options 3/16 1/4 3/8 1/2 5/8 3/4 1 1 1/4 1 1/2 2 Other types of shaft available include: Specials up to 150mm Ø Tubing Please enquire. 13
Metric Shaft Support Rails Shaft support rails will prevent shaft defl ection under load and provide a high level of rigidity in order to achieve optimum performance from your open type Pacific Bearing, or any other open recirculating linear bearing. d M 145 Support Rails are of low overall height making them particularly suitable for use with Hepco Pacific Pillow Blocks. The standard support rail is manufactured from aluminium alloy and comes in 600mm lengths only, these are then cut/butted together to fit to the overall length of the one piece shaft. H t N O2 U2 V Shaft All types of shaft can be supplied drilled for customer assembly or fitted to the support rails for ease of supply. O1 E A U1 For standard 600mm aluminium support rails, X = half of T1 or T2. For support rails which require cutting/butting, customer to confirm Dim X X T1/T2 X = 1/2 hole pitch T 1 or T 2 600 +0.5-1.5 X For Shaft Diameter d H 1 ±0.01 A V M O 1 U 1 N E t O 2 SQ. U 2 DIN7980 T 1 T 2 12 12 22 40 5 5.8 M 4X20 4 8 29 4.5 M 4X12 4 75 120 16 16 26 45 5 7 M 5X20 5 9 33 7.6 M 5X16 5 100 150 20 20 32 52 6 8.3 M 6X25 6 11 37 8.6 M 6X16 6 100 150 25 25 36 57 6 10.8 M 8X30 8 15 42 9 M 6X16 6 120 200 30 30 42 69 7 11 M10X35 10 17 51 10 M 8X25 8 150 200 40 40 50 73 8 15 M10X40 10 19 55 9.5 M 8X25 8 200 300 50 50 60 84 9 19 M12X45 12 21 63 11.2 M10X30 10 200 300 Shaft & Support Rail Fully Assembled Drilled Shaft Only Support Rails Only Simply prefix the shaft reference with AU Example AU NIM 20 X L2000 T2 Simply state the shaft reference and add T1 or T2 depending upon shaft hole centres required Example NIM 20 X L2000 T2 Aluminium Support Rails supplied in 600mm lengths only. Simply state whether T1 or T2 drilling is required Example Support Rail for 20mm Shaft T2 Hole Centre SR20 T2 14
Aluminium Shaft Supports Nominal Shaft Diameter Major Dimensions h E W L F G P B S Mounting Bolt Designation Weight g ASS 10 10 17 18.5 37 10 30 5 18 28 4.5 M4 24 ASS 12 12 20 21 42 15 35 5.5 20 32 5.5 M5 30 ASS 16 16 25 25 50 15 42 6 26 40 5.5 M5 40 ASS 20 20 30 30 60 20 50 8 32 45 5.5 M5 70 ASS 25 25 35 37 75 25 58 9 38 60 6.6 M6 130 ASS 30 30 40 42 84 30 68 10 45 68 9 M8 180 ASS 40 40 50 54 108 30 86 12 56 86 11 M10 420 ASS 50 50 60 65 130 40 100 14 80 108 11 M10 750 HepcoMotion can undertake shaft machining to standard ed as shown below or specials to customers drawings. We canmachine 1 off or 100 off with fast delivery. Special steels and non standard toleranced material is also available. Please speak to our sales dept 01884 257000 for further information. L2 Option A L2 Option B L2 Option C d D d D d D Spigot One end L Both ends Undercut to DIN 76 Threaded Spigot One end Both ends Drilled and Tapped One end Both ends L2 Option D D A/F Please send drawing Please send drawing Single Flat One end Double Flat Both ends 15
Housing and Shaft tolerance Housing is essential to use Hepco s super ball bushing and service life and accuracy is affected by the inner tolerance of housing. You can refer to table 2~7 about housing and shaft tolerance to use super ball bushing. Table 3. European type SB 16 Inner Diameter(D) 26 Tolerance(H7) +0.021 0 SBE 20 32 SBE 25 40 +0.025 0 SBE 30 47 SBE 40 SBE 50 62 75 +0.030 0 Table 6. European type SB 16 Shaft Diameter 16 Tolerance(h6) 0-0.011 SBE 20 20 SBE 25 25 0-0.013 SBE 30 30 SBE 40 40 0-0.016 SBE 50 50 Assembly Hepco s Super Ball Bushing is very precise so it must be handled with meticulous care. Use of a jig(see illustration) is recommended for insertion into a housing and Care should be taken not to exert pressure on the ball reatainer or seals. The edge of the housing bore must be charmfered as well as the ends of the shaft are also chamfered. And the WON Super Bushing is not tilted when it is pushed onto the shaft. Reducing load capacity in short-stroke application In short stroke application the service life of the Hepco shafts is shorter than that of the Super Ball Bushing. For this reason the life can be shorten up to about 70% by the stroke. Fig 9. 16
Assembly Tolerance of Housing Bore The recommended housing and shaft tolerances are shown in the following table Table 4. Tolerance for House Bore Type Grade High(H) Case Normal Fit Tight Fit Clearance of Outer Sleeve and Shaft Normal fit is standard for using of Linear Bushing with LM shaft, and for without clearance, Tight fit is also available. Table 5. Tolerance for Shaft Diameter Type LM Shaft Grade Normal Fit Tight Fit High(H) Note 1) When clearance after installation is required to minus, Allowable value of radial clearance is not allowed to exceed the value in the table. Note 2) Axial clearance of SH, SHW, SHO type are same as High grade. 17
Load / Life Life Calculation Basic Dynamic Rating (C) The basic Dynamic Load Rating (C) is the maximum continuous load that can be applied to a bearing with a 90% probability that a working life of 50 km will be achieved. Hardness factor (fh) There are three basic factors to the load calculation that may need to be applied depending on the application conditions. Shaft hardness factor (fh) The hardness of the shaft should be 60 RC +/- 2, refer fig 45 for shaft hardness factors. Raceway Hardness HRC Fig 5. Hardness factor (fh) L C P fh ft : Running distance life : Basic dynamic load rating : Applied load : Hardness factor(fig 5.) : Temperature factor(fig 6.) (km) (N) (N) Temperature factor (ft) Linear motion system temperature C Fig 6. Temperature factor (ft) Temperature factor (fr) Ball bushings in this range are designed to work at a maximum temperature of 100 deg C, for temperatures higher than this please apply the temperature factor as indicated in fig 6. Load direction factor (fb) Load capacities are affected by the position of the applied load in relation to the ball bushing ball track circuit as fig 7. Fig 8 shows the factors to be applied for the various load positions around the circumference of the bushing. Basic Static Load Rating (C0) The Basic Static Load Rating (C0) is the static load that will permanently cause deformation of the bushing ball track equivalent to 0.0001 of the ball diameter. It is good practice to limit the maximum static force to 80% maximum of the static load rating. 18
Lubrication For best performance and to achieve a long and trouble free life ball bushings require lubrication either oil or grease. Grease Lubrication For grease lubrication the anticorrosive protection oil should be removed prior to assembly ensuring that the bearing is dry before applying grease. Grease should be applied directly to the ball circuits prior to fitting, generally a lithium soap grease ISO viscosity grade 2 is recommended for general use. Oil Lubrication. For oil lubrication it is not necessary to remove the anticorrosive protection from the bushing. The viscosity grade will be dependent on the operating temperature, please see the chart below Operating Temp. -30 C ~ 50 C 50 C ~ 80 C Viscosity VG 15 ~ 46 VG 46 ~ 100 Fig 4. For most effective lubrication oil should be applied between two assembled bushings as shown in Fig 4 where only seals are fitted to the outside of each bearing. Periodic checking of the installation is recommended whether oil or grease is concerned in order to check that the bushing is not running dry. 19
Part Number Hepco s Linear Ball Bushing Model - : Standard Series E : European Series Flange Option - : No Flange F : Round Type K : Square Type Type - : Closed type OP : Open type Seal - : No Seal UU : Seals on both sides Type - : Standard L : Long(Double-wide) Outer Diameter of Shaft Standard type Possible mounting methods are illustrated in Fig 6. and Fig 7. Mount a Linear Bushing with retaining rings and cover plates. Fig 6. Mounting with retaining rings Fig 7. Mounting with cover plates 20
HepcoMotion Product Range GV3 Linear Guidance and Transmission System HDS2 Heavy Duty Slide System PRT2 Precision Ring and Track System HDRT Heavy Duty Ring Slides and Track System SL2 Stainless Steel Based Slide System SBD Sealed Belt Drive MCS Aluminium Frame and Machine Construction System HDLS Heavy Duty Driven Linear System DLS Linear Transmission and Positioning System HTS Telescopic Ball Bearing Slides HPS Powerslide-2 Guided Rodless Cylinder MHD Heavy Duty Track Roller Guidance System DTS Driven Track System BSP Ballscrew Premier Vee Slide Linear Guidance Systems PDU2 Profile Driven Unit PSD120 Profile Screw Driven Unit Product Range HepcoMotion Exclusive European partners and distributors for Bishop-Wisecarver since 1984. Single Edge Slide System LoPro Aluminium Based Slide System UtiliTrak Lightweight U Channel Guideway For further information on HepcoMotion products please request our leaflet FPL Lower Moor Business Park, Tiverton Way, Tiverton, Devon, England EX16 6TG Tel: +44 (0)1884 257000 Fax: +44 (0)1884 243500 E-mail: sales@hepcomotion.com CATALOGUE No.HLG 01 UK 2014 Hepco Slide Systems Ltd. Reproduction in whole or part without prior authorisation from Hepco is prohibited. Although every effort has been made to ensure the accuracy of the information in this catalogue, Hepco cannot accept liability for any omissions or errors. Hepco reserves the right to make alterations to the product resulting from technical developments. Many Hepco products are protected by: Patents, Copyright, Design Right or Registered Design. Infringement is strictly prohibited and may be challenged in law. The Customer s attention is drawn to the following clause in Hepco s conditions of sale: It shall be the Customer s sole responsibility to ensure that goods supplied by Hepco will be suitable or fit for any particular application or purpose of the Customer, whether or not such application or purpose is known to Hepco. The Customer will be solely responsible for any errors in, or omissions from, any specifications or information the Customer provides. Hepco will not be obliged to verify whether any such specifications or information are correct or sufficient for any application or purpose. 21 Hepco s full conditions of sale are available on request and will apply to all quotations and contracts for the supply of items detailed in this catalogue.