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1、BRITISH STANDARD BS 3134-1: 1979 Incorporating Amendment No. 1 Metric tapered roller bearings Part 1: Specification for dimensions and tolerances of single row bearings UDC 621.822.87 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1
2、:1979 This British Standard, having been prepared under the direction of the Mechanical Engineering Standards Committee, was published under the authority of the Executive Board and comes into effect on 28 September 1979 BSI 10-1999 First published August 1959 First revision October 1968 Second revi
3、sion September 1979 The following BSI references relate to the work on this standard: Committee reference MEE/30 Draft for comment 78/75200 DC ISBN 0 580 10920 8 Cooperating organizations The Mechanical Engineering Standards Committee, under whose direction this British Standard was prepared, consis
4、ts of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committee Association of Consulting Engineers Association of Hydraulic Equipment Manufacturers Association of Mining Electrical and Mechanical Engineers British C
5、ompressed Air Society British Electrical and Allied Manufacturers Association (BEAMA) British Gas Corporation British Gear Manufacturers Association British Internal Combustion Engine Manufacturers Association British Pump Manufacturers Association British Steel Corporation British Steel Industry Br
6、itish Valve Manufacturers Association Chartered Institution of Building Services Crown Agents for Oversea Governments and Administrations Department of the Environment Department of Industry (Mechanical Engineering) Department of Industry (National Engineering Laboratory) Department of Trade (Marine
7、 Division) Electricity Supply Industry in England and Wales Engineering Equipment Users Association* Federation of Manufacturers of Construction Equipment and Cranes Health and Safety Executive Institution of Gas Engineers Institution of Mechanical Engineers* Institution of Plant Engineers Instituti
8、on of Production Engineers* Lloyds Register of Shipping London Transport Executive Machine Tool Industry Research Association* Ministry of Defence* National Coal Board* Oil Companies Materials Association Process Plant Association Railway Industry Association of Great Britain Society of Motor Manufa
9、cturers and Traders Limited Telecommunication Engineering and Manufacturing Association (TEMA) Water-tube Boilermakers Association The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of th
10、is British Standard: Ball and Roller Bearing Manufacturers Association North East Coast Institution of Engineers and Shipbuilders Scientific Instrument Manufacturers Association Society of British Aerospace Companies Limited Amendments issued since publication Amd. No.Date of issueComments 3614March
11、 1981Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1:1979 BSI 10-1999i Contents Page Cooperating organizationsInside front cover Forewordii 1Scope1 2Dimensions and tolerances1 3Symbols1 4Dimens
12、ion series designation system1 Appendix A Relevant documentationInside back cover Figure 1 Bearing dimensions2 Figure 2 Chamfer dimensions2 Table 1 Series designations2 Table 2 Cone bore and cone runout tolerances (assembled bearing). Normal class and special width class 6X3 Table 3 Cup outside diam
13、eter and cup runout tolerances (assembled bearing). Normal class and special width class 6X3 Table 4 Bearing width and effective width of sub unit tolerances. Normal class3 Table 5 Bearing width and effective width of sub unit tolerances. Special width class 6X3 Table 6 Cone and cup back face maximu
14、m and minimum chamfer dimensions4 Table 7 Boundary dimensions. Contact angle series 25 Table 8 Boundary dimensions. Contact angle series 310 Table 9 Boundary dimensions. Contact angle series 412 Table 10 Boundary dimensions. Contact angle series 515 Table 11 Boundary dimensions. Contact angle series
15、 716 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1:1979 ii BSI 10-1999 Foreword This British Standard has been prepared under the direction of the Mechanical Engineering Standards Committee taking into account the relevant publis
16、hed and draft International Standards prepared by Technical Committee ISO/TC 4, Rolling bearings, of the International Organization for Standardization (ISO). In particular, the new ISO symbols for dimensions and tolerances have been adopted in this revision of BS 3134 and the series designations an
17、d boundary dimensions of the bearings comply with those given in ISO 355:1977 “Rolling bearings Metric tapered roller bearings Boundary dimensions and series designations”. Addenda to ISO 355 (in course of preparation) will cover the boundary dimensions of double row bearings and of flanged cups for
18、 roller bearings. These details will be added to BS 3134 in due course. In the light of metrication, it has been decided not to include inch series bearings in this edition. In support of industrys recommendation that the United Kingdom should change to the metric system, users should wherever possi
19、ble adopt metric bearings sizes for all new design applications. Where ball bearings, cylindrical and spherical roller bearings, instrument precision bearings, needle roller bearings, airframe bearings and accessories for use with rolling bearings are concerned, reference should respectively be made
20、 to the following British Standards: BS 292, Dimensions of ball bearings and cylindrical roller bearings1). BS 3469, Instrument precision rolling bearings (ball bearings). BS 5773, Metric needle roller bearings. BS 2SP, 89 Airframe bearings (roller bearings). BS 5646, Rolling bearings: accessories.
21、NOTETo facilitate the typesetting and printing of this standard, Table 1, Table 7, Table 8, Table 9, Table 10 and Table 11 and Figure 1 are identical with Tables 1, 2, 3, 4, 5 and 6 and Figure 1 in ISO 355:1977 which have been adopted in toto. In these tables, the comma has been used throughout as a
22、 decimal marker. In British Standards, it is current practice to use the full point on the baseline as the decimal marker. However, for the sake of uniformity in this standard the layout of Table 2, Table 3, Table 4, Table 5 and Table 6 is identical with the ISO layout. A British Standard does not p
23、urport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside fron
24、t cover, pages i and ii, pages 1 to 16, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) To be revised to include spherical roller bearings.
25、 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1:1979 BSI 10-19991 1 Scope 1.1 This British Standard specifies boundary dimensions and tolerances for single row metric tapered roller bearings within the range 15 mm to 360 mm bore.
26、Except for the contact angle, it does not deal with other features of internal design and dimensions, nor with materials and methods of manufacture which may affect functional interchangeability. 1.2 It includes a dimensions series designation for each bearing listed but the designation system in cl
27、ause 4 is not applicable to bearings which are not included in this standard. 1.3 For information purposes, relevant documentation associated with tapered roller bearings is given in Appendix A. 2 Dimensions and tolerances 2.1 Dimensions. The dimensions of single row tapered roller bearings shall be
28、 in accordance with those given in Table 7 to Table 11 inclusive. The bearings in these tables have been grouped by contact angle series and then listed in ascending order of bore, outside diameter and bearing width. The dimensions for front face chamfers are not included in this standard. However,
29、the front face corners shall not be sharp. 2.2 Tolerances. The tolerances for metric tapered roller bearings shall be in accordance with those given in Table 2 to Table 6 inclusive. 3 Symbols 3.1 Dimensions 3.2 Tolerances 4 Dimension series designation system Each bearing, the dimensions of which ar
30、e given in this standard, is referred to a dimension series. The dimension series is designated by a combination of three symbols, for example 2BC. The first symbol is a numeric character which represents a range of contact angles, angle series. The second symbol is an alphabetic character, which re
31、presents a range of numeric values for the outside diameter to bore relationship, diameter series. The third symbol is an alphabetic character, which represents a range of numeric values for the width to section height relationship, width series. The designations for the standardized bearings confor
32、m generally with the angle ranges and the numeric values for the relationships given in Table 1. In some cases an exception has been made to avoid the condition that the same designation be used for two different bearings with the same bore diameter. A complete bearing may be designated by stating i
33、ts dimension series and bore size, the bore size being given by three digits, for example 2BC022, 2CD105. d= bearing bore diameter, nominal D= bearing outside diameter, nominal T= bearing width, nominal B= cone width, nominal C= cup width, nominal E= cup small inside diameter, nominal = bearing cont
34、act angle, nominal r1= cone back face chamfer height r1smin= smallest single r1 r1smax= largest single r1 r2= cone back face chamfer width r2smin= smallest single r2 r2smax= largest single r2 r3= cup back face chamfer height r3smin= smallest single r3 r3smax= largest single r3 r4= cup back face cham
35、fer width r4smin= smallest single r4 r4smax= largest single r4 r5= cone and cup front face chamfer height and width %dmp= mean bore diameter deviation %Dmp= mean outside diameter deviation Vdp= bore diameter variation. Ovality VDp= outside diameter variation. Ovality Vdmp= mean bore diameter variati
36、on. Taper VDmp= mean outside diameter variation. Taper Kia= assembled bearing cone runout Kea= assembled bearing cup runout %Bs= cone width deviation %Cs= cup width deviation %Ts= bearing width deviation %Ts1= assembled cone effective width deviation %Ts2= assembled cup effective width deviation NOT
37、E%Ts is the assembled bearing width tolerance; %Ts1 is that part of %Ts which results from the cone manufacturing tolerances; %Ts2 is that part of %Ts which results from the cup manufacturing tolerances. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Cop
38、y, (c) BSI BS 3134-1:1979 2 BSI 10-1999 Table 1 Series designations Figure 1 Bearing dimensions Figure 2 Chamfer dimensions Angle series designation OverIncl. 1 Reserved for future use 21013 52 313 5215 59 415 5918 55 518 5523 62327 72730 Diameter series designation OverIncl. A Reserved for future u
39、se B3,403,80 C3,804,40 D4,404,70 E4,705,00 F5,005,60 G5,607,00 Width series designation OverIncl. A Reserved for future use B0,500,68 C0,680,80 D0,800,88 E0,881,00 NOTESee foreword for reference to the use of the decimal comma in this table. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:
40、05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1:1979 BSI 10-19993 Table 2 Cone bore and cone runout tolerances (assembled bearing). Normal class and special width class 6X Table 3 Cup outside diameter and cup runout tolerances (assembled bearing). Normal class and special width class 6X T
41、able 4 Bearing width and effective width of sub unit tolerances. Normal class Table 5 Bearing width and effective width of sub unit tolerances. Special width class 6X Tolerance values in micrometres. d mm %dmpVdpVdmpKia overincl.highlowmax.max.max. 10180 1212915 18300 1212918 30500 1212920 50800 151
42、51125 801200 20201530 1201800 25251935 1802500 30302350 2503150 35352660 3154000 40403070 Tolerance values in micrometres. D mm %DmpVDpVDmpKea overincl.highlowmax.max.max. 18300 1212918 30500 14141120 50800 16161225 801200 18181435 1201500 20201540 1501800 25251945 1802500 30302350 2503150 35352660
43、3154000 40403070 4005000 45453480 5006300 505038100 Tolerance values in micrometres. d mm %Bs%Cs%Ts%Ts1%Ts2 overincl.highlowhighlowhighlowhighlowhighlow 10180 1200 120+ 2000+ 1000+ 1000 18300 1200 120+ 2000+ 1000+ 1000 30500 1200 120+ 2000+ 1000+ 1000 50800 1500 150+ 2000+ 1000+ 1000 801200 2000 200
44、+ 200 200+ 100 100+ 100 100 1201800 2500 250+ 350 250+ 150 150+ 200 100 1802500 3000 300+ 350 250+ 150 150+ 200 100 2503150 3500 350+ 350 250+ 150 150+ 200 100 3154000 4000 400+ 400 400+ 200 200+ 200 200 Tolerance values in micrometres. d mm %Bs%Cs%Ts%Ts1%Ts2 overincl.highlowhighlowhighlowhighlowhig
45、hlow 10180 500 100+ 1000+ 500+ 500 18300 500 100+ 1000+ 500+ 500 30500 500 100+ 1000+ 500+ 500 50800 500 100+ 1000+ 500+ 500 801200 500 100+ 1000+ 500+ 500 1201800 500 100+ 1500+ 500+ 1000 1802500 500 100+ 1500+ 500+ 1000 2503150 500 100+ 2000+ 1000+ 1000 3154000 500 100+ 2000+ 1000+ 1000 Licensed C
46、opy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1:1979 4 BSI 10-1999 Table 6 Cone and cup back face maximum and minimum chamfer dimensions Dimensions in millimetres. Cone back face chamfer r1sminadr1smax radial direction r2smax axial direction
47、 r2sminOverincl. Cup back face chamfer r3sminaD r3smax radial direction r4smax axial directionr4sminOverincl. 0,3 400,71,4 400,91,6 0,6 401,11,7 401,32 1,0 501,62,5 501,93 1,5 1202,33 1202502,83,5 2503,54 2 1202,84 1202503,54,5 25045 2,5 1203,55 12025045,5 2504,56 3 12045,5 1202504,56,5 25040057 400
48、5,57,5 4 12057 1202505,57,5 25040068 4006,58,5 5 1806,58 1807,59 6 1807,510 180911 NOTESee foreword for reference to the use of the decimal comma in this table. a The largest single shaft and housing fillet radius should not exceed the smallest single chamfer dimension of the corresponding cone or c
49、up (r1smin, r2smin, r3smin or r4smin). Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 04:05:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3134-1:1979 BSI 10-19995 Table 7 Boundary dimensions. Contact angle series 2 Values in millimetres and degrees dDTB r1smin r2smin C r3smin r4smin EDimension series 154214,2513111110 45 2933,2722FB 174013,2512111112 57 1031,4082DB 174017,2516114111 4531