BRITISH STANDARD AUTOMOBILE SERIES BS AU 50 2 2a 1984 (Superseding BS AU 50 2 2 1984 Incorporating Amendment No 1 Tyres and wheels — Part 2 Wheels and rims — Section 2a Specification for dimensions of[.]
Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-2.2a:1 984 (Superseding BS AU 50-2 2:1984 Incorporating Amendment No Tyres and wheels — Part 2: Wheels and rims — Section 2a: Specification for dimensions of wheel naves and hub centres for commercial vehicles UD C 62 1 64: 62 1 4 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE/- ) to Technical Committee AUE/4 upon which the following bodies were represented: Agricultural Engineers’ Association British Industrial Truck Association British Pressure Gauge Manufacturers’ Association British Rubber Manufacturers’ Association Bus and Coach Council Department of Transport London Transport Executive Ministry of Defence Motor Cycle Association of Great Britain Motor Industry Research Association Retread Manufacturers’ Association Road Haulage Association Ltd Society of Motor Manufacturers and Traders Limited This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on 28 September 984 © BSI 02- 2000 The following BSI references relate to the work on this standard: Committee reference AUE/4 Draft for comment 82/791 52 DC ISBN 80 3970 Amendments issued since publication Amd No Date of issue Comments 8586 June 995 Indicated by a sideline in the margin Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Contents Page Committees responsib le Inside front cover Foreword ii Scope 2 Wheel nave and hub dimensions Stud seating plane Appendix A Wheel nave and hub dimensions for spherical mountings for commercial vehicles and their derivatives Appendix B Recommended method for checking variation of stud seatings Figure — D imensions of type A mounting: spigot mounting Figure — D imensions of type B mounting: conical mounting Figure — Examples of recommended wheel- to- hub assemblies Figure — D imensions of spherical mounting Figure — Recommended method for checking variation © BSI 02 - 000 of stud seatings Tab le — D imensions of type A mounting: spigot mounting Tab le — D imensions of type B mounting: conical mounting Tab le — D imensions of spherical mounting i Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Foreword BS AU 0- , Wheels and rims , was firs t p ub lis hed in 964 It was revised in Wheels and rims — Dimensions In 984 s ection of 73 as BS AU 0- a, BS AU - a was revis ed and p ub lis hed s ep arately as BS AU - In addition to the dimens ional data for commercial vehicle wheel mountings , this S ection includes information on wheel nave and hub mountings using s p herical countersinks in the Ap p endix A Figure s hows typ ical wheel- to- hub as semb lies which are recommended current p ractice There is no British S tandard for wheel and hub dimens ions for p as s enger cars and their derivations, as the typ es of mountings are numerous and varied It was decided that it would not b e p racticab le to p rep are a us eful s tandard Tyre, wheel, rim and valve requirements are given in the following Parts and S ections of BS AU : — Tyres and wheels : Part 1: Tyres; — Section 0: General; — Section 1: Car tyres; — Section 2: Commercial vehicle tyres; — Section 3: Off-the-road tyres; — Section 4: Agricultural vehicle tyres; — Section 5: Industrial vehicle tyres; — Section 6: Motorcycle tyres; — Section 7: Moped tyres; — Section 8: Code of practice for the storage of tyres, inner tubes and flaps; — Part 2: Wheels and rims; Section 0: General (including terms and definitions, and construction and workmanship); — — Section 2: Specification for dimensions of wheel naves and hub centres for commercial vehicles; — Section 3: Specification for road-wheel nuts, studs and bolts for commercial vehicles; Section 5: Road wheels manufactured wholly or partly of cast light alloy for passenger cars; — Section 6: Specification for road wheels manufactured wholly or partly of light alloy for mopeds and motor cycles; — Section 7: Code of practice for the selection and care of wheels for commercial vehicles; — Section 8: Code of practice for the selection and care of wheels for passenger cars (including caravans and light trailers); — — Part 3: Valves; — Section 1: Specification for valve dimensions; — Section 2: Tyre valve threads 5V1, 5V2, 6V1 and 8V1; — Section 3: Tyre valve threads 9V1, 10V2, 12V1 , and 3V1 ; — Section 4: Tyre valve threads 8V2, 10V1, 11 V1, 13V2, 15V1, 16V1, 17V1, 7V2, 17V3, 19V1 , and 20V1 ; — Section 5: Dimensions for ISO core chamber No for tyre inflation valves; — Section 6: Dimensions for ISO core chamber No for tyre inflation valves; Section 7: Code of practice for the selection and care of tyre inflation valves for passenger cars (including caravans and light trailers); — Section 8: Code of practice for the selection and care of tyre inflation valves for commercial vehicles; — ii © BS I - 0 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 — Part 4: Rim profiles and dimensions; — Section 0: General; — Section : Car rims; — Section 2: Commercial vehicle rims; — Section 3: Off-the-road rims; — Section 4: Agricultural tractor and machine rims; — Section 5: Industrial vehicle rims; — Section 6: Motorcycle rims; — Section 7: Moped rims A British Standard does not purport 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 front cover, pages i to iv, pages to 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 © BSI 02- 2000 iii Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI iv blank Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 2.1 Scope NO TE D ata for s p herical mountings are given in Ap p endix A for information only This S ection of the standard s p ecifies dimens ional requirements for wheel naves and hub centres for NO TE D ifficulty can aris e during wheel removal due to s eiz ure on to the s p igot The us e of an interrup ted s p igot is recom mended to as s is t with rem oval p rocedures commercial vehicles and their derivatives The mountings are either typ e A: s p igot mounting or 2.3 Stud seating plane typ e B: conical mounting For typ e B mountings , for wheels cap ab le of b eing 2.2 Wheel nave and hub dimensions as semb led in dual formation, the variation of the seating p lane of the inner counters inks s hall b e not Wheel nave and hub dimens ions shall comp ly with greater than mm the requirements for the relevant typ e A or typ e B mounting given in Figure and Tab le and NO TE A recommended checking method is given in Ap p endix B Figure and Tab le NO TE Typ e A is p referred for future des igns , as it is NO TE The inner counters ink is the counters ink on which the wheel nuts or s tuds engage when as s emb led as dual wheels cons idered that the traditional UK method of wheel mounting, While the p lane is imp ortant only to the inner wheel of the p air, typ e B, will gradually b e rep laced b y typ e A mountings all wheels are checked to ens ure interchangeab ility NO TE E xamp les of recom mended wheel- to- hub as s emb lies are given in Figure © BS I - 00 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Figure — Dimensions of type A mounting: spigot mounting Table — Dimensions of type A mounting: spigot mounting Wheel nave Designation Number of stud holes D1 a AW6 AW8 AW10/1 AH10/2 a Stud 10 10 mm 205 275 225 335 Hub D2 D3 +1 +0.2 mm 21 24 26 26 mm 161 221 176 281 D4 Designation Number of studs mm 255 325 285 390 D1 Stud diameter a AH6 AH8 AH10/1 AH10/2 10 10 mm 205 275 225 335 18 20 22 22 mm D5 D6 –0.2 –5.0 mm 160.8 220.8 175.8 280.8 mm 250 320 280 385 holes and studs shall be equally spaced on pitch circle diameter D1 © BSI 02-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Figure — Dimensions of type B mounting: conical mounting Table — Dimensions of type B mounting: conical mounting Wheel nave Designation Number of stud holes D1 6 10 10 10 d +0.8 +0.5 –0.25 ab BW6/1 BW6/2 BW8 BW10/1 BW10/2 BW10/3 D2 Hub mm 170 205 275 335 335 335 mm 21.8 25 25 25 28.2 28.2 mm 26.7 31 31 31 34 34 µc ± 1° ° 80 80 80 80 80 80 D3 +1 D4 Number of studs mm mm 130 161 221 281 276 281 Designation 223 255 325 390 390 390 D1 Stud diameter max ab BH6/1 BH6/2 BH8 BH10/1 BH10/2 8H10/3 6 10 10 10 D5 mm 170 205 275 335 335 335 18 mm 7/8 in BSF 7/8 in BSF 7/8 in BSF in BSF in BSF mm 129 160 220 280 275 280 D6 –5.0 mm 222 250 320 385 385 385 holes and studs shall be equally spaced on pitch circle diameter D1 true position tolerance relates only to the stud and nut seating c The axis of the cone-seating shall be perpendicular to the mounting face within ± 15 a Stud b The © BSI 02-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI Figure — Examples of recommended wheel-to-hub assemblies BS AU 0-2.2a:1 984 © BSI 02 - 000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Appendix A Wheel nave and hub dimensions for spherical mountings for commercial vehicles and their derivatives The data given in Figure and Table for the spherical type of wheel mounting is for information only and is not part of the requirements of this standard Figure — Dimensions of spherical mounting Table — Dimensions of spherical mounting Number of stud holes D1 ab mm 6 10 170 205 275 335 D2 d +0.8 +0.5 –0.25 mm 21.8 21.8 27 27 mm 26.7 26.7 32 32 R D3 +1.0 16 16 18 18 mm mm 130 161 221 281 D4 Stud diameter mm 223 255 325 390 D5 max mm 16 and 18 18 22 22 mm 129 160 220 280 D6 –5.0 mm 222 250 320 385 holes and studs shall be equally spaced on pitch circle diameter D1 true position tolerance relates only to the stud and nut seating a Stud b The © BSI 02-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 Appendix B Recommended method for checking variation of stud seatings The recommended method of checking the variation of the stud seating plane is by placing spherical balls (of equal size) in each seating and measuring the variation from a datum plate resting on these balls (see Figure 5) Figure — Recommended method for checking variation of stud seatings © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI blank Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 52: G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 0-2.2a:1 984 BSI — British Standards Institution BS I is the indep endent national b ody res p ons ib le for p rep aring Britis h S tandards It p res ents the UK view on s tandards in E urop e and at the international level It is incorp orated b y Royal C harter Revisions Britis h S tandards are up dated b y amendment or revis ion Us ers of Britis h S tandards should make s ure that they p oss es s the latest amendments or editions It is the constant aim of BS I to imp rove the quality of our p roducts and services We would b e grateful if anyone finding an inaccuracy or amb iguity while us ing this Britis h S tandard would inform the S ecretary of the technical committee res p ons ib le, the identity of which can b e found on the inside front cover Tel: 02 89 96 90 00 Fax: 02 89 96 40 BS I offers memb ers an individual up dating s ervice called PLUS which ens ures that s ub s crib ers automatically receive the lates t editions of s tandards Buying standards O rders for all BS I, international and foreign s tandards p ub lications s hould b e addres s ed to C us tomer S ervices Tel: 899 00 Fax: 899 7001 In res p ons e to orders for international standards , it is BS I p olicy to sup p ly the BS I imp lementation of thos e that have b een p ub lis hed as Britis h S tandards, unless otherwis e requested Information on standards BS I p rovides a wide range of information on national, E urop ean and international standards through its Lib rary and its Technical H elp to E xp orters S ervice Various BS I electronic information s ervices are also availab le which give details on all its p roducts and s ervices C ontact the Information C entre Tel: 02 89 96 71 1 Fax: 02 89 96 048 S ub s crib ing memb ers of BS I are kep t up to date with s tandards develop ments and receive sub s tantial discounts on the p urchase p rice of s tandards For details of thes e and other b enefits contact Memb ership Adminis tration Tel: 02 89 96 70 02 Fax: 02 89 96 00 Copyright C op yright s ub s is ts in all BS I p ub lications BS I als o holds the cop yright, in the UK, of the p ub lications of the international s tandardization b odies E xcep t as p ermitted under the C op yright, D es igns and Patents Act 988 no extract may b e rep roduced, s tored in a retrieval s ystem or transmitted in any form or b y any means – electronic, p hotocop ying, recording or otherwis e – without p rior written p ermis s ion from BS I This does not p reclude the free us e, in the cours e of imp lementing the standard, of necess ary details such as s ymb ols, and size, typ e or grade designations If thes e details are to b e used for any other p urp os e than imp lementation then the p rior written p ermiss ion of BS I must b e ob tained If p ermis sion is granted, the terms may include royalty p ayments or a licensing agreement D etails and advice can b e ob tained from the C op yright Manager BS I 89 C his wick H igh Road London W4 4AL Tel: 02 89 96 70