BRITISH STANDARD AUTOMOBILE SERIES BS AU 50 4 3 1a 1998 ISO 4250 3 1997 Tyres and wheels — Part 4 Rim profiles and dimensions — Section 3 Off the road rims — Subsection 3 1a Specification for narrow a[.]
BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-4-3.1 a: 998 ISO 425 0-3: 997 Tyres and wheels — Part 4: Rim profiles and dimensions — Section 3: Off-the-road rims — Subsection 3.1 a Specification for narrow and wide base off-the-road vehicle rims IC S 43 40 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 0-4-3.1 a:1 998 National foreword This British Standard reproduces verbatim ISO 4250- 3: 997 and implements it as the UK national standard It supersedes BS AU 50- 4- : 991 , which is withdrawn The UK participation in its preparation was entrusted to Technical Committee AUE/4, Tyres and wheels for motor vehicles, which has the responsibility to: — aid enquirers to understand the text; — present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; — monitor related international and European developments and promulgate them in the UK A list of organizations represented on this committee can be obtained on request to its secretary Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue 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 and ii, the ISO title page, page ii, pages to 1 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 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on January 998 © BSI 04- 999 ISBN 80 2941 8 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy Amendments issued since publication Amd No Date Comments BS AU 0-4-3.1 a:1 998 Contents Page National foreword Foreword Inside front cover ii Scope Rim identification Rim contours Rim knurling Rim load and inflation pressures Rim dimensions Annex A (informative) Sealing ring grooves and O- rings for earth- mover rims © BSI 04- 999 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy 10 Figure — Contours of 5° full tapered bead seat rims Figure — Contours of 5° full tapered bead seat rims Figure — Contours of semi- drop- centre rims Figure — Contours of 5° drop- centre rims Figure — Contours of 5° drop- centre rims Figure — Transverse knurling details Table — Contours of 5° full tapered bead seat rims Table — Contours of 5° full tapered bead seat rims Table — Contours of semi- drop- centre rims Table — Contours of 5° drop- centre rims Table — Contours of 5° drop- centre rims Table — Knurling widths for rim Table — Earth- mover specified rim diameters i ii Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy blank Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 0-4-3.1 a:1 998 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work of preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote International Standard ISO 4250-3 was prepared by Technical Committee ISO/TC 31, Subcommittee SC 6, Tyres, rim s and v alv es, Off- the- road tyres and rim s This second edition cancels and replaces the first edition (ISO 4250-3:1987), of which it constitutes a technical revision ISO 4250 consists of the following parts, under the general title Earth- m ov er tyres and rim s: — — — Annex A of this part of ISO 4250 is for information only Part : Tyres des ignations and dim ensions; Part 2: Lo ads and inflatio n p res sures; Part 3: Rim s Descriptors: designation Site equipment, self-propelled machines, earth-moving equipment, rims, dimensions, ii Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 04-1999 BS AU 50-4-3.1 a:1 998 Loose flanges shall be marked on an externally Scope ISO 4250 consists of three parts (see the Foreword) laying down the technical elements relating to designation and dimensions of tyres and rims for earth- moving machinery: it also gives load tables for visible surface The marking shall indicate nominal height and nominal diameter Rim contours Rim contours are given in Figure to Figure and these tyres This part of ISO 4250 sets out the designation, contours and dimensions for rims for narrow and wide base off- road tyres primarily intended for Table to Table Rim knurling earth- moving machinery Rim knurling details are given in Figure and Annex A gives details of sealing ring grooves and Table O- rings for earth- mover rims NOTE Terms used are in accordance with ISO 391 : 977, / Wh eels rim s — No m enclature, designatio n, m arking and u nits o f m eas urem ent manufacturer’s recommendations, even though the tyre may be approved for a higher load or inflation 2.1 Codes shall be used to identify: (see Table 6); D b) nominal width between flanges; c) nominal flange height or rim profile designations 2.2 The rim marking shall consist of codes for: a) specified rim diameter, The load and inflation pressure imposed on the rim and wheel shall not exceed the rim and wheel Rim identification a) specified rim diameter, Rim loads and inflation pressures D ; b) nominal width between flanges pressure Consult the rim and wheel manufacturer to determine if rim and wheel capacities are adequate for the intended service Rim dimensions Rim dimensions are standardized for size and contour only, and for particular tyre and rim combinations designated to ensure proper mounting and fit of the tyre to the rim The markings shall be on the weather side of the rim and visible when the tyre is mounted on the rim Where a disk is fitted by the rim/wheel manufacturer, the marking shall appear on either the disc or rim base © BSI 04- 999 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 0-4-3.1 a:1 998 NO TE The figure applies to rim diameter codes 25, 29, 33, 35, 39, 43, 45, 49, 51 and 57 (See Table for specified rim diameters ) NO TE Flange and bead seat shall be removable on one side Figure — Contours of ° full tapered bead seat rims Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 04- 999 BS AU 50-4-3.1 a:1 998 Table — C ontours of ° full tapered bead seat rims D imens ions in millimetres A G B P ± 13 ± min Rim width code/flange height code R tol 1 /2 86 51 32, 01 32 ± 1,5 0 /2 330 63 , 45 , 01 38 ± 1,5 330 70 48, 01 47, ± 1,5 0/3 0 81 76 55 1 7, 44, ± 1,5 00/3 –49 81 76 55 1 7, 51 ± 0/2 43 51 32, 01 32 ± 1,5 0/3 43 89 58 39 51 ± 0/2 495 , 51 32, 01 32 ± 1,5 0/2 495 , 63 , 45 , 01 38 ± 1,5 0/4 495 , 01 , 66 39 57 ± 2 0/2 508 51 32, 01 32 ± 1,5 2 0/3 559 76 55 39 44, ± 1,5 2 0/4 559 01 , 66 39 57 ± 2 0/4 559 1 4, 74 39 63 , ± 2 00/4 –5 559 114 74 90 , 63 , ± 2 0/3 609 , 76 55 39 44, ± 1,5 0/5 609 , 127 86, 90 , 70 ± 2 0/3 63 58 39 51 ± 2 00/5 –5 660 , 86, 90 , 70 ± 2 0/3 686 58 39 51 ± 2 0/6 686 7, 90 , 84 ± 2, 0/3 71 58 39 51 ± 2 0/4 71 1 01 , 66 39 57 ± 2 0/6 73 6, 52, 7, 90 , 84 ± 2, 0/4 787 , 01 , 66 39 57 ± 0/4 81 01 , 66 39 57 ± 0/4 81 1 4, 74 39 63 , ± 0/4 91 4, 1 4, 74 39 63 , ± 1 4, 74 39 63 , ± 0/2 a 40 0/4 a 01 89 127 89 52, 89 For rim diameter code > 49 © BS I 4- 99 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 0-4-3.1 a:1 998 NOTE This figure applies to rim diameter code 25 (see Table for specified rim diameters) NOTE Flange and brad seat shall be removable on one side Figure — Contours of ° full tapered bead seat rims Table — C ontours of ° full tapered bead seat rims Dimensions in millimetres A Rim width code/flange G height code tol tol B P min R R ± 1,5 50/1 21 ± 33 ± 1,5 25, 50 23 00/1 254 ± 38 ± 1,5 28 59 25, 00/1 305 ± 6, 33 ± 1,5 25, 47 23 10 00/1 355, ± 6, 38 ± 1,5 28 59 25, 10 00/1 432 ± 13 43 ± 25, 60 23 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy max © BSI 04- 999 BS AU 50-4-3.1 a:1 998 NOTE This figure applies to rim diameter codes 24 and 25 (see Table for specified rim diameters) NOTE Flange and bead seat shall be removable on one side Figure — Contours of semi-drop-centre rims Table — Contours of semi-drop-centre rims Dimensions in millimetres A Rim width code/flange height code tol G B P H ± 1,5 min R Rim diameter code ± 1,5 00 TG SDC 203 ± 3, 35, 7, 47 6, 24 00 VA SDC 254 ± 43 25, 59 11 23 24 00/1 SDC 305 ± 6, 33 25, 47 23 25 00/1 SDC 355, ± 6, 33 25, 47 23 25 © BSI 04- 999 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy 6, 5 BS AU 0-4-3.1 a:1 998 NOTE This figure applies to rim diameter codes 56, and 59, (see Table for specified rim diameters) Figure — Contours of ° drop-centre rims Table — Contours of ° drop-centre rims Dimensions in millimetres A B ± 10 Rim width code Ha La Q P max R2 R3 R4 max max R5a 20 508 57 09, 06 201 , 20, 32 9, 44, 32 22 559 57 09, 57 201 , 20, 32 9, 44, 32 23 597 66, 31 , 111 248 52 41 25, 48 38, 27 686 66, 31 , 200 248 52 41 25, 48 38, a These dimensions comprise the minimum well envelope for tyre mounting purposes of dimension Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy Q © BSI 04- 999 BS AU 50-4-3.1 a:1 998 NOTE The figure applies to rim diameter codes 24 and 25 (see Table for specified rim diameters) Figure — Contours of 5° drop-centre rims Table — Contours of ° drop-centre rims Dimensions in millimetres A Rim width G B P H L Q R1 R2 code flange R3 R4 R5 height code tol tol max min max max Rim diameter + code 00/1 228, ± 5, 38 ± 1,5 25 36 49 48 25, 02 19 14 22 24 max 24 00/1 254 ± 6, 33 ± 1,5 25 40 49 45 25, 02 23 10 12 17 24 00/1 305 ± 6, 33 ± 1,5 25 40 40 45 30 90 23 10 12 17 25 00/1 330 ± 6, 36 ± 1,5 25 40 40 48 30 02 23 10 12 17 25 00/1 355, ± 6, 33 ± 1,5 25 40 40 45 30 90 23 10 12 17 25 00/1 355, ± 6, 38 ± 1,5 27 43 40 52 30 90 25, 12 17 25 © BSI 04- 999 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 0-4-3.1 a:1 998 Figure — Transverse knurling details Table — Knurling widths for rim D imensions in millimetres Knurling width Rim width codes Fixed flange side Removable flange side 51 max a) Rim diameter codes to 49 1 to 00 38 00 and ab ove 67 max 67 max 38 38 67 max 67 max 53, 53, b ) Rim diameter codes 51 and larger 2 00 and ab ove Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 04- 999 BS AU -4 -3 a:1 998 Tab le — E arth-mover sp ecifie d rim diamete rs Rim diame te r co de s S p e cifie d d iame te r, D mm 24 61 4, 25 63 , 29 73 6, 33 83 8, 35 889, 39 990, 43 92 , 45 1 43 , 49 44, 51 95 , 57 447 , 43 , 51 , © BS I 4- 99 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 50-4-3.1 a:1 998 Annex A (informative) Sealing ring grooves and O-rings for earth-mover rims 10 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 04- 999 BS AU 50-4-3.1 a:1 998 Dimensions in millimetres Rim base DB Rim size ;DB Bead seat ring R r tol 11-20 SDC 12-20 SDC 13-20 SDC 10.00VA-24 SDC 16.00T-24 SDC 8.00TG-24 SDC 8.50-25/1.3 10.00-25/1.5 11.23-25/1.3 12.00-25/1.3 14.00-25/1.5 17.00-25/1.7 12.00-25/1.3 SDC 14.00-25/1.3 SDC 11.25-25 13.00-25 15.00-25 16.00-25 17.00-25 19.50-25 20.00-25 22.00-25 24.00-25 25.00-25 – 29 – 33 – 35 – 39 – 43 – 45 – 49 – 51 – 57 487,4 T1 DR ; DR ± 0,3 531,2 T2 tol 488,6 L ! Proposed O-ring designation +2 535 OR 220 ± 1,2 589 850,4 ± 1,2 590,2 854,2 OR 224 600 609,6 885 1,6 601,2 max 3,2 3,2 915,1 ± 2,4 610,8 888,8 1,2 5° 918,9 ± 2,4 OR 225 620,6 949,7 ± 1,2 621,8 953,4 ± 1,2 600 885 602 891,2 + 1,2 – 2,4 4,8 OR 325 + 1,2 – 2,4 1,6 2° 5,6 1,6 1 1 701,6 803,2 854,1 955,7 057,3 108,1 209,7 244,6 397 204,1 523,3 683,2 002,4 321,6 481,2 800,4 910 ± 2,4 6,4 388,8 1 1 7,2 703,6 805,2 856,1 957,7 059,3 110,1 211,7 246,6 399 210,4 529,6 689,5 008,7 327,9 487,5 806,7 916,3 2,4 395,1 OR 329 OR 333 OR 335 OR 339 OR 343 OR 345 OR 349 OR 451 — 15° 9,5 OR 457 NOTE O-ring size, shape and properties should provide a lasting positive seal © BSI 04-1999 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy 11 BS AU 0-4-3.1 a:1 998 ISO 425 0-3: BSI — British Standards Institution 997 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 internationalstandardization 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 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy Tel: 02 89 96 70