Dr. TRETTER AG. Tolerance Rings. safe cost-effective fast assembly

Transcription

1 Dr. TRETTER AG Tolerance Rings safe cost-effective fast assembly

2 Tolerance Rings are corrugated metal strips manufactured of high quality spring steel. Tolerance Rings are a fastening device between two machine parts. Tolerance Rings are placed in the gap between shaft and bore of two machine components. Copyright by Dr.TRETTER AG. All rights reserved. The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect oder consequential arising out of use of the information contained herein. Specifications are subject to change without notice and without any obligation on the part of the manufacturer. 2

3 Contents I General Information Page 1. Introduction 4 2. Advantages 4 3. Applications 4 4. Types of mounting 5 II Selection of Tolerance Rings 1. Types of Tolerance Rings 6 2. Materials 7 3. Temperature 7 III Mounting 1. Shaft and bore tolerances 8 2. Details for mounting ball bearings 8 3. Selecting the mounting arrangement 8 4. Design of mating parts 9 5. Mounting instructions 9 IV Calculation 1. Mounting force Axial seating capacity Calculation of torque transfer 10 V Ordering Reference Number 10 VI Technical Data VII Special Tolerance Rings 1. Type BN (hole basis system) Type AN (shaft basis system) Type AL (light construction) Mounting roller bearings Internal specifications Non standard Tolerance Rings 22 3

4 I General Information 1. Introduction Tolerance Rings have been used with great success as a fastening device between two machine parts for many years. The wide variety of uses which this product enjoys has led to it s world-wide recognition as a valuable machine element. By mounting the Tolerance Ring into the gap between shaft and bore it exerts a load equal to it s compression in the opposite direction. 2. Advantages Tolerance Rings offer important technical and economic advantages: low cost through rapid assembly permit wider machine tolerances high torque capabilities permit low cost design of both machine parts, eliminating keyways, pins, screws etc. provide high temperature resistance ensure absorbtions of vibrations offer resistance against corrosion by a number of chemical substances compensate for misalignement eliminate problems of differential thermal expansion of mating parts 3. Applications Tolerance Rings can be used for different purposes: a) In many applications there are no defined axial or circumferential forces to be transmitted between the parts to be joined. What is generally required in such cases, is a fixing device for such simple machine parts as handles, ball knobs, labyrinth rings or bushings b) Tolerance Rings are used for mounting roller bearings offering: - wider tolerances on the machined component diameter - the advantage of the compensation for differential thermal expansion, for instance between light alloy housings and steel bearings. c) Tolerance Rings can be used to fasten machine parts which need to transmit a defined axial or circumferential force of a known magnitude. Examples of this type of application are the mounting of pulleys, fl ywheels and ventilating fans. The torque figures shown in the tables should only be used as a guide as differences in the mating materials can effect the values given. 4

5 General Information 4. Types of mounting This illustration shows a ventilation fan being secured to a shaft using a Tolerance Ring. A secondary function of this design is, that the fan is securing the axial position of the roller bearing. In this illustration ball bearings are mounted with a Tolerance Ring in the feed mechanism of an industrial sewing machine. Here a pump wheel is fastened into a drainage and condensation pump by means of a Tolerance Ring. The rotor of a variable condensor, insulated in a ceramic bush, is retained by a Tolerance Ring. Tandem mounted Tolerance Rings on a mowing machine drive. Roller bearings are mounted in a fl uid drive with type AN Tolerance Rings. In this application max. operating temperatures of 170 C are reached. 5

6 II Selection of Tolerance Rings 1. Types Three types of Tolerance Rings known as type BN, type AN and type AL are available to cover the wide variety of applications for which a Tolerance Ring can be used. TYPE BN For use, when a standard nominal bore diameter is specified (shaft variable). The Tolerance Ring is placed over the shaft and the shaft is pressed into place. The flat edge is on the inside of the ring. TYPE AN For use when a standard nominal shaft diameter is specified (housing bore variable). The Tolerance Ring is placed in the bore with the flat edge on the outside of the ring. The Tolereance Ring is made in a slightly open condition which allows it to grip the bore surface during assembly. TYPE AL A special curved type of series AN (housing bore variable) for mounting of smaller roller bearings. 6

7 Selection of Tolerance Rings 2. Materials Tolerance Rings are made from either high quality spring steel strip or from stainless steel strip. The majority of Tolerance Rings are made from stainless spring steel strip to provide better thermal and chemical resistance. The smaller sizes of Tolerance Rings are usually made from carbon spring steel strip. The capacity i.e. the transferable torque and the radial load of the carbon steel Tolerance Rings is slightly higher than Tolerance Rings made from stainless steel. The ordering reference number indicates the material after the hyphen..., 5 indicates stainless steel and 0 indicates carbon steel, ref. page 10. BN rings up to diameter 8 are normally made from carbon steel, the bigger sizes from stainless steel. AN rings up to diameter 10 are normally made from carbon steel, the bigger sizes from stainless steel. The series AL rings are exclusively made from stainless steel carbon steel on request. For more information, please look at the table on page Temperature Stainless steel: The spring qualities of the Tolerance Ring does not deteriorate when operating at continuous temperatures of up to 250 C or when exposed to 300 C for brief periods. force [ N ] without Tolerance Rings Carbon steel: The spring qualities of the Tolerance Ring does not deteriorate when operating at continuous temperatures of up to 120 C or when exposed to 170 C for brief periods. with Tolerance Rings temperature The diagram shows the mounting of a roller bearing 6204 with an outside diameter of 47 in an aluminium housing. The assembly force of 2300 N is necessary for a J6 fi t. When roller bearings are mounted without the Tolerance Ring AN the axial retention force falls to zero at a temperature of 80 C, whereas using a Tolerance Ring AN there is still an axial retention of 1100 N at a temperature of 120 C. 7

8 III Mounting 1. Shaft and bore tolerances The limits chosen for the diameters of shaft and bore determine the fi t between the two elements and hence the holding capacity of the whole assembly. The required dimensions can be taken from the table of available Tolerance Ring sizes on pages 11 to 20. In this connection the following must be noted: a) Tolerances according to the ISO system are permissable up to h9 for shafts and H9 for bores and under certain conditions up to h11 or H11. b) The tolerances quoted for the mounting of roller bearings and for torque transfer refer to the combinations steel on steel or steel on many non ferrous metals. They apply to the temperatures up to 100 C. Applications should be tested if they involve materials that differ considerably from steel in their strength properties. 2. Details for mounting ball bearings The use of Tolerance Rings for mounting roller bearings has become more and more widespread in industry. Both, the two standard types BN and AN and the type AL specially developed for the mounting of ball bearings can be used for this purpose. The use of Tolerance Rings to mount roller bearings allows wider machine tolerances and thus saves money by reducing rejects. Mounting of Tolerance Rings in the centered or piloted arrangement is preferable in this application. In order to take advantage of the compensation for differential thermal expansion, for instance between light alloy housings and steel bearings offered by Tolerance Rings, suffi x B3 roller bearings with larger than normal clearance should be used, as the relatively high radial pressure required for mounting of the bearing tends to reduce the clearance between bearing and shaft. 3. Selecting the mounting arrangement Free This arrangement is extremely economical because the ring is simply placed between the straight cylindrical surfaces of the bore and the shaft. If this arrangement is used the assembly may be slightly off centre, an allowance must be made for a reduction of about 20% in the torque M given in the tables on pages 11 to 20. Free arrangement BN Free arrangement AN Centered The centered arrangement is used when perfect concentricity is required or major radial impact loads are to be expected. Selection of the appropriate fit between shaft and bore keeps eccentricity within the required tolerance limits, at the same time providing shock absorbtion to protect the Tolerance Ring from damage. Centered arrangement BN Centered arrangement AN Piloted The piloted arrangement is necessary where concentricity is critical or where the Tolerance Ring will rotate with respect to applied radial load. Piloted arrangement BN Piloted arrangement AN, AL Tandem mounting of Tolerance Rings Where an application requires a greater load than that provided by one Tolerance Ring, it is, of course, possible to fi t two or more Tolerance Rings until the sum of their load ratings exceeds the load to be carried. It is necessary that the rings to be used, are seperated by flanges to avoid the rings slipping over each other. Tandem mounted BN Tandem mounted AN 8

9 Mounting 4. Design of Mating Parts In order to ensure maximum effect and long life and to prevent any damage to the Tolerance Rings, the following should be observed in the design of the mating parts. When using the type BN Tolerance Ring the leading edge of the bore should be provided with a radius r B. Similary when using type AN and AL Tolerance Ring the leading edge of the shaft requires a radius r W. When using the centered arrangement transition radius r E should be as small as possible to ensure that the Tolerance Rings are well seated. Retaining groove width b requires a C13 fit. Details about correct radii and groove width are given in the following table. Diameter/ r W and r B r E Tolerances b Retaining groove µm to 10 1,0 0, to 18 1,0 0, to 30 1,25 0, to 40 1,25 0, to 50 1,25 0, to 65 2,0 0, over 65 2,0 0, Mounting Instructions Centered arrangement, type BN. The Tolerance Ring is placed in the shaft groove. The shaft together with the Tolerance Ring in place is then pressed into the bore. Free arrangement, type BN. The Tolerance Ring is placed over the shaft and an assembly tool (X) is used to brace the ring as the shaft is pressed into place. X Centered arrangement, type AN. The Tolerance Ring is placed in the housing and then the shaft is pressed into the bore, at right angles to the groove. Free arrangement, type AN. The Tolerance Ring is placed in the bore and a bed plate (X) is used to support it while the shaft is pressed into place. X 9

10 IV Calculation 1. Mounting Force Calculated figures to be taken as guide values only: K = Mounting force M = Torque from ring specification table D = Diameter of Tolerance Ring for torque transfer K (N) for bearing mounts K (N) 2. Axial Seating Capacity Calculated figures to be taken as guide values only: S = Seating capacity M = Torque from ring specification table D = Diameter of Tolerance Ring for torque transfer S (N) for bearing mounts S (N) 3. Calculation of Torque The transferable torque capacities and the radial loads indicated in the tables are standard values only. These values may be infl uenced for instance by consistancy, surface hardness, surface roughness and lubrication of mounting parts and therefore not to be seen as assured minimum values. Known: Output P (kw) Speed n (min 1 ) Safety factors s Exemples for s: for fastening pulleys s = 2,5 3 reversible motion s = 6 gears s = 7 10 Required torque: M req = 9550 n P s (Nm) Example: Known: Output P = 4 kw Speed n = 900 min 1 Safety factor 3 Required: Tolerance Ring BN Ø (req) Selected from table: Tolerance Ring BN or BN with M = 145/141 Nm The first two digits represent the letters of the series BN, AN and AL. Digit number three and four indicate the Tolerance Ring diameter. Digit five (after the hyphen) shows the material type; 0 = Carbon steel 5 = Stainless steel The last two digits show the width of the Tolerance Ring. For example: Type BN Tolerance Ring diameter D = 12 width b = 6 required in stainless steel Reference number from table: BN V Ordering Reference Number Series BN, AN, AL Ring diameter Ring width Material: 0 = Carbon steel 5 = Stainless steel 10

11 VI Technical Data 1. Type BN Hole basis system Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions bore shaft shaft for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 D b D d d M P pcs. H9 (Nm) (N) BN , ,06 4, ,18 0, ,08 BN , ,06 4, ,18 0, ,12 BN , ,06 4, ,18 0, ,16 BN , ,06 5, ,18 0, ,12 BN * , ,06 5, ,18 0, ,17 BN * , ,06 5, ,18 0, ,21 BN , ,06 5, ,18 1, ,23 BN , ,57 6, ,71 0, ,18 BN , ,57 6, ,71 0, ,26 BN , ,57 6, ,71 0, ,27 BN , ,57 6, ,71 1, ,34 BN , ,57 6, ,71 1, ,52 BN , ,57 7, ,71 0, ,30 BN * , ,57 8, ,71 1, ,29 BN , ,57 8, ,71 3, ,43 BN , ,57 8, ,71 3, ,52 BN , ,57 8, ,71 3, ,67 BN , ,57 8, ,71 4, ,69 BN , ,57 9, ,71 4, ,48 BN , ,57 9, ,71 5, ,68 BN , ,59 10, ,77 2, ,32 BN , ,59 10, ,77 3, ,43 BN * , ,59 10, ,77 4, ,53 BN , ,59 10, ,77 5, ,64 BN , ,59 10, ,77 6, ,82 BN * , ,59 10, ,77 7, ,00 BN , ,59 11, ,77 4, ,46 BN , ,59 11, ,77 4, ,58 BN , ,59 11, ,77 5, ,70 BN , ,59 11, ,77 7, ,87 BN * , ,59 12, ,77 4, ,50 BN , ,59 12, ,77 4, ,62 BN , ,59 12, ,77 5, ,88 BN , ,59 12, ,77 8, ,38 * also available in carbon steel + also available in stainless steel 11

12 Technical Data Type BN Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions bore shaft shaft for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 D b D d d M P pcs. H9 (Nm) (N) BN , ,59 13, ,77 3, ,41 BN , ,59 13, ,77 3, ,54 BN , ,59 13, ,77 4, ,68 BN , ,59 13, ,77 6, ,81 BN , ,59 13, ,77 8, ,95 BN , ,59 13, ,77 11, ,10 BN , ,59 13, ,77 12, ,30 BN * , ,59 14, ,77 7, ,73 BN , ,59 14, ,77 10, ,02 BN , ,59 14, ,77 12, ,17 BN , ,59 15, ,77 3, ,47 BN , ,59 15, ,77 4, ,62 BN , ,59 15, ,77 8, ,78 BN , ,59 15, ,77 10, ,93 BN * , ,59 15, ,77 12, ,09 BN * , ,59 15, ,77 14, ,24 BN , ,59 16, ,77 9, ,91 BN , ,59 16, ,77 15, ,32 BN , ,59 16, ,77 21, ,82 BN * , ,59 17, ,77 10, ,87 BN , ,59 17, ,77 19, ,66 BN , ,59 17, ,77 22, ,93 BN * , ,11 18, ,33 7, ,81 BN , ,11 18, ,33 8, ,04 BN , ,11 18, ,33 9, ,08 BN * , ,11 18, ,33 12, ,36 BN * , ,11 18, ,33 15, ,63 BN * , ,11 18, ,33 18, ,90 BN , ,11 18, ,33 19, ,04 BN * , ,11 18, ,33 23, ,45 BN * , ,11 18, ,33 25, ,72 BN * , ,11 18, ,33 28, ,99 BN * , ,11 20, ,33 18, ,81 BN * , ,11 20, ,33 26, ,26 12 * also available in carbon steel + also available in stainless steel

13 Technical Data Type BN Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions bore shaft shaft for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 D b D d d M P pcs. H9 (Nm) (N) BN , ,11 20, , ,31 BN , ,11 22, , ,48 BN , ,11 22, , ,64 BN * , ,11 22, , ,97 BN * , ,11 23, , ,38 BN * , ,11 23, , ,73 BN * , ,11 23, , ,07 BN * , ,11 23, , ,59 BN , ,11 23, , ,11 BN * , ,11 23, , ,46 BN * , ,11 23, , ,99 BN * , ,11 23, , ,32 BN , ,11 26, , ,34 BN , ,11 26, , ,90 BN , ,11 26, , ,29 BN * , ,11 26, , ,87 BN , ,11 28, , ,67 BN * , ,11 28, , ,09 BN * , ,11 28, , ,51 BN * , ,11 28, , ,14 BN * , ,11 28, , ,19 BN , ,11 28, , ,82 BN , ,11 28, , ,29 BN * , ,11 30, , ,69 BN * , ,11 30, , ,59 BN , ,11 30, , ,74 BN , ,13 33, , ,26 BN , ,13 33, , ,92 BN * , ,13 33, , ,90 BN , ,13 33, , ,16 BN , ,13 33, , ,80 BN , ,13 34, , ,43 BN , ,13 34, , ,04 BN , ,13 34, , ,09 * also available in carbon steel + also available in stainless steel 13

14 Technical Data Type BN Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions bore shaft shaft for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 D b D d d M P pcs. H9 (Nm) (N) BN * , ,13 38, , ,75 BN , ,13 38, , ,51 BN * , ,13 38, , ,63 BN , ,13 38, , ,49 BN , ,13 38, , ,27 BN , ,13 43, , ,25 BN * , ,13 43, , ,37 BN , ,13 43, , ,50 BN , ,13 43, , ,73 BN , ,13 43, , ,62 BN , ,13 43, , ,75 BN * , ,13 48, , ,69 BN , ,13 48, , ,33 BN , ,13 48, , ,48 BN , ,13 48, , ,22 BN , ,13 48, , ,83 BN , ,65 52, , ,48 BN , ,65 52, , ,97 BN , ,65 52, , ,03 BN , ,65 52, , ,20 BN , ,65 57, , ,60 BN , ,65 57, , ,62 BN , ,65 57, , ,50 BN , ,65 62, , ,40 BN , ,65 62, , ,46 BN , ,65 77, , ,80 BN , ,65 77, , ,85 BN * , ,18 82, , ,72 BN * , ,18 87, , ,92 BN , ,18 87, , ,65 B ,04 97,18 97,44 97, ,85 B ,04 97,18 97,44 97, ,70 B ,04 136,20 136,52 136, ,30 B ,04 136,20 136,52 136, ,63 14 * also available in carbon steel + also available in stainless steel

15 Technical Data 2. Type AN Shaft basis system Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions shaft bore bore for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 d b d D D M P pcs. H9 (Nm) (N) AN , ,95 4, ,86 0, ,08 AN , ,95 4, ,86 0, ,09 AN , ,95 4, ,86 0, ,12 AN , ,95 5, ,86 0, ,08 AN , ,95 5, ,86 0, ,12 AN , ,95 5, ,86 1, ,18 AN , ,985 6, ,86 0, ,11 AN , ,985 6, ,86 0, ,15 AN , ,985 6, ,86 1, ,19 AN , ,985 6, ,86 1, ,29 AN , ,48 9, ,30 1, ,20 AN , ,48 9, ,30 1, ,27 AN , ,48 9, ,30 2, ,40 AN , ,48 9, ,30 2, ,47 AN , ,48 11, ,30 0, ,17 AN , ,48 11, ,30 2, ,26 AN , ,48 11, ,30 2, ,34 AN * , ,48 11, ,30 3, ,47 AN , ,48 11, ,30 3, ,57 AN * , ,48 11, ,30 4, ,67 AN , ,48 11, ,30 4, ,78 AN * , ,48 13, ,30 1, ,23 AN , ,48 13, ,30 3, ,32 AN , ,48 13, ,30 4, ,58 AN , ,48 13, ,30 6, ,70 AN , ,48 13, ,30 8, ,85 AN * , ,48 13, ,30 9, ,25 AN , ,48 15, ,30 5, ,50 AN , ,48 15, ,30 7, ,75 AN , ,48 15, ,30 9, ,97 AN * , ,48 16, ,30 5, ,54 AN , ,48 16, ,30 7, ,81 AN , ,48 16, ,30 11, ,95 AN , ,48 16, ,30 14, ,49 * also available in carbon steel + also available in stainless steel 15

16 Technical Data Type AN Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions shaft bore bore for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 d b d D D M P pcs. H9 (Nm) (N) AN , ,48 17, ,30 4, ,36 AN , ,48 17, ,30 7, ,58 AN , ,48 17, ,30 8, ,73 AN , ,48 17, ,30 9, ,88 AN , ,48 17, ,30 14, ,16 AN , ,48 17, ,30 17, ,61 AN , ,98 19, ,75 6, ,80 AN * , ,98 19, ,75 11, ,33 AN , ,98 19, ,75 17, ,94 AN * , ,98 20, ,75 7, ,77 AN , ,98 20, ,75 21, ,06 AN * , ,98 21, ,75 18, ,79 AN , ,98 21, ,75 22, ,90 AN , ,98 21, ,75 24, ,17 AN , ,98 21, ,75 30, ,72 AN , ,98 21, ,75 34, ,53 AN , ,98 23, ,75 12, ,75 AN , ,98 23, ,75 16, ,05 AN * , ,98 23, ,75 18, ,65 AN , ,98 23, ,75 30, ,41 AN , ,98 23, ,75 35, ,01 AN , ,98 23, ,75 38, ,31 AN , ,98 25, ,75 17, ,99 AN * , ,98 25, ,75 18, ,15 AN , ,98 25, ,75 29, ,98 AN , ,98 25, ,75 32, ,65 AN , ,98 25, ,75 45, ,31 AN , ,98 26, ,75 24, ,90 AN , ,98 26, ,75 35, ,76 AN , ,98 26, ,75 47, ,46 AN , ,98 27, ,75 21, ,44 AN , ,98 27, ,75 26, ,80 AN , ,98 27, ,75 43, ,88 AN , ,98 27, ,75 52, ,61 AN , ,98 29, ,75 27, ,56 16 * also available in carbon steel + also available in stainless steel

17 Technical Data Type AN Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions shaft bore bore for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 d b d D D M P pcs. H9 (Nm) (N) AN , ,98 29, , ,95 AN , ,98 29, , ,34 AN , ,98 29, , ,00 AN * , ,98 29, , ,90 AN , ,98 29, , ,85 AN , ,98 31, , ,67 AN * , ,98 31, , ,51 AN * , ,98 31, , ,35 AN , ,98 31, , ,29 AN , ,98 33, , ,37 AN , ,98 33, , ,97 AN , ,98 33, , ,16 AN , ,98 33, , ,79 AN , ,98 36, , ,96 AN , ,98 36, , ,26 AN , ,98 36, , ,02 AN , ,98 36, , ,22 AN , , , ,23 AN , ,98 41, , ,30 AN , ,98 41, , ,12 AN , ,98 41, , ,51 AN , ,98 41, , ,01 AN , ,98 41, , ,51 AN , ,98 41, , ,27 AN , ,98 43, , ,74 AN , ,98 43, , ,86 AN , ,98 46, , ,60 AN , ,98 46, , ,50 AN , ,98 48, , ,66 AN , ,98 48, , ,91 AN , ,98 48, , ,83 AN , ,98 48, , ,00 AN , ,98 48, , ,89 AN , ,98 48, , ,78 AN , ,47 52, , ,81 AN , ,47 52, , ,74 * also available in carbon steel + also available in stainless steel 17

18 Technical Data Type AN Centered Free Reference No. Tolerance Ring Dimensions of Mating Parts Load Weight dimensions shaft bore bore for mounting for torque torque permissible approx. roller bearings transfer capacity radial load kg/1000 d b d D D M P pcs. H9 (Nm) (N) AN , ,47 54, , ,37 AN , ,47 54, , ,17 AN , ,47 57, , ,78 AN , ,47 57, , ,97 AN , ,47 62, , ,65 AN , ,47 62, , ,75 AN * , ,47 64, , ,34 AN , ,47 64, , ,02 AN , ,47 67, , ,29 AN , ,47 67, , ,20 AN , ,47 72, , ,83 AN * , ,47 74, , ,57 AN , ,47 74, , ,58 AN , ,47 74, , ,29 AN , ,47 74, , ,15 AN , ,47 77, , ,31 AN , ,47 77, , ,89 AN , ,47 82, , ,60 AN , ,47 82, , ,12 AN , ,96 86, , ,81 AN , ,96 87, , ,08 AN , ,96 92, , ,32 AN , ,96 92, , ,77 AN , ,96 92, , ,63 AN , ,96 92, , ,38 Zeile streichen , ,96 102, , ,95 A , ,96 102, , ,54 A * , ,96 102, , ,90 A , ,96 109, , ,29 A , ,96 112, , ,48 A , ,96 117, , ,84 A , ,96 128, , ,46 A , ,96 133, , ,81 A , ,96 135, , ,16 A , ,96 143, , ,41 A , ,96 153, , ,33 18 * also available in carbon steel + also available in stainless steel

19 Technical Data 3. Type AL Specifically used for light section bearings, par ti cularly where axial movement of the bearing is desirable. Free Axial retention of Tolerance Ring Reference No. Tolerance Ring dimensions Dimensions of Mating Parts Diameter of roller bearing Bore Working width C13 b1 Permissible radial load P (N) d b D AL ( 624) 13, , AL ( 625) 16, , AL ( 626) 19, , AL ( 608) 22, , AL ( 609) 24, , AL ( 629) 26, , AL ( 6001) 28, , AL ( 6200) 30, , AL ( 16002) 32, , AL ( 6002) 32, , AL ( 6201) 32, , AL ( 6003) 35, , AL ( 6202) 35, , AL ( 6205) 52, ,

20 Technical Data 4. Mounting Roller Bearings Beside the type AL Tolerance Rings shown at page 19, there are other possibilities of mounting roller bearings using type AN and BN Tolerance Rings. Which Tolerance Ring applies to which ball bearing is shown in the table below. Bearing No. Tolerance Ring Shaft Groove Tolerance Ring Bore Groove for inner race diameter width for outer race diameter width dxdxb d b D b C13 C (10x 26 x 8) BN , ,57 5 AN , , (10x 30 x 9) BN , ,57 5 AN , , (10x 35 x11) BN , ,57 5 AN , , (12x 28 x 8) BN , ,59 6 AN , , (12x 32 x10) BN , ,59 6 AN , , (15x 32 x 8) BN , ,59 6 AN , , (15x 35 x11) BN , ,59 6 AN , , (15x 42 x13) BN , ,59 6 AN , , (17x 35 x10) BN , ,59 6 AN , , (17x 40 x12) BN , ,59 6 AN , , (17x 47 x14) BN , ,59 8 AN , , (20x 42 x12) BN , ,11 6 AN , , (20x 47 x14) BN , ,11 8 AN , , (20x 52 x15) BN , ,11 8 AN , , (25x 47 x12) BN , ,11 8 AN , , (25x 52 x15) BN , ,11 10 AN , , (25x 62 x17) BN , ,11 12 AN , , (30x 55 x13) BN , ,11 8 AN , , (30x 62 x16) BN , ,11 10 AN , , (30x 72 x19) BN , ,11 12 AN , , (35x 62 x14) BN , ,13 8 AN , , (35x 72 x17) BN , ,13 10 AN , , (35x 80 x21) BN , ,13 12 AN , , (40x 68 x15) BN , ,13 10 AN , , (40x 80 x18) BN , ,13 12 AN , , (40x 90 x23) BN , ,13 15 AN , , (45x 75 x16) BN , ,13 10 AN , , (45x 85 x19) BN , ,13 10 AN , , (45x100x25) BN , ,13 15 A , , (50x 80x16) BN , ,13 12 AN , , (50x 90x20) BN , ,13 12 AN , , (50x110x27) BN , ,13 16 A , ,

21 VII Special Tolerance Rings 1. Internal Specification In this table some internal specifications of Tolerance Ring production and additional tooling is shown. This data can also be used to work out if short term production of special Tolerance Ring sizes of a certain quantity is possible. Dimensions of shaft and bore diameter can be calculated too. The gap G must be large enough to ensure that the ends of the mounted Tolerance Ring do not touch or overlap. Series and Dimensions Material thickness Wave height Pitch Wave width Material AN d BN D s h t b 1 Ø 4-7,5 4-7,5 0,15 0,5 1, up to 7,5 normally carbon steel 7,6-16,0 7,6-19,0 0,20 0,75 2, > 7,5 stainless steel or carbon steel 16,1-30,0 19,1-32,0 0,30 1,0 3,5 30,1-48,0 32,1-52,0 0,40 1,0 5,0 48,1-80,0 52,1-82,0 0,50 1,25 6, > 60,1 only stainless steel 80,1-120,0 82,1-123,0 0,60 1,5 7, > 120,1 > 123,1 0,70 2,0 9, AL All sizes 0,15 0,33 3, stainless steel 21

22 Special Tolerance Rings 2. Non Standard Tolerance Rings Using the figures on page 21, Tolerance Rings with special dimensions can be calculated. To obtain different torque values or larger radial loads, certain dimensions of the Tolerance Ring can be altered. In the suary shown below the special dimensions are arranged according to their importance. The type of special manufacturing is indicated by digit 5 of the ordering reference number Special material thickness s Special wave height h Special pitch t Special hardness Special material type Special diameter Special width Other variations Manufacure of these special rings require certain quantities. This illustration shows an anti theft solution in a car steer ing lock assembly. Tandem Tolerance Rings are used as a frictional safety clutch allowing the steering shaft to rotate in the sleeve when excessive force is used on the steering wheel. The torque required to cause this slip is low enough to protect the steering lock components but is high enough to prevent the thief from steering the car. Special machinery is used in the manufacture of these Tolerance Rings because it is impossible to achieve the precise operating torque range required for this application using a standard ring. 22

23 Schaffhauserstrasse BERINGEN SWITZERLAND phone: + 41 (0) fax: + 41 (0) info@tretter.ch Our program On stock: We produce acc. drawing: Location: Tolerance Rings Special Tolerance Rings Dr. TRETTER AG Schaffhauserstrasse BERINGEN SWITZERLAND Other Dr. TRETTER products On stock: We produce acc. drawing: Location: Ball Bushings Linear Sets Linear Components Ball Splines Ball Screws Rail Guides Ball Transfer Units Steel Shafts Components for Linear Systems Dr. Erich TRETTER GmbH + Co. Am Desenbach RECHBERGHAUSEN GERMANY Ball Bushings Linear components track roller guidance systems rail guides ball screws linear actuator