BRITISH STANDARD AUTOMOBILE SERIES BS AU 50 1 3 3 1996 ISO 10571 1995 Tyres and wheels — Part 1 Tyres — Section 3 Off the road tyres — Subsection 3 3 Specification for tyres for mobile cranes and simi[.]
BRITISH STANDARD AUTOMOBILE SERIES BS AU 50-1 3.3:1 996 ISO 05 71 : 995 Tyres and wheels — Part : Tyres — Section 3: Off-the-road tyres — Subsection 3.3 Specification for tyres for mobile cranes and similar specialized machines IC S 83 60 BS AU 0-1 3.3:1 996 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee AUE/4, Tyres and wheels for motor vehicles, upon which the following bodies were represented: Agricultural Engineers’ Association Automobile Association British Industrial Truck Association British Pressure Gauge Manufacturers’ Association British Rubber Manufacturers’ Association Confederation of Passenger Transport UK Department of Transport Freight Transport Association Institute of Road Transport Engineers (Inc) Motor Cycle Industry’s Association of Great Britain Ltd Motor Industry Research Association National Tyre Distributors’ Association Retread Manufacturers’ Association Road Haulage Association Ltd Society of Motor Manufacturers and Traders Ltd 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 Amendments issued since publication June 996 © BSI 09- 999 The following BSI references relate to the work on this standard: Committee reference AUE/4 Draft for comment 94/704475 DC ISBN 80 25 624 Amd No Date Comments BS AU 0-1 3.3:1 996 Contents Page Committees responsible National foreword Inside front cover ii Scope Normative references Definitions Tyre designation and marking Tyre dimensions Tyre load capacities Approved rim contours Annex A (normative) Nominal section width steps Table — Correlation between load index (LI) and tyre load- carrying capacity (TLCC) Table — 95 series tyre dimensions Table — 80 series tyre dimensions Table — Basic tyre load ratings for 95 series tyres Table — Basic tyre load ratings for 80 series tyres Table — Tyre load- carrying capacity at various speeds Table — Approved rim contours for 95 series tyres Table — Approved rim contours for 80 series tyres List of references © BSI 09- 999 Inside back cover i BS AU 0-1 3.3:1 996 National foreword This Subsection of this Part of BS AU 50 has been prepared by Technical Committee AUE/4 and is identical with ISO 0571 : 995 Tyres for mob ile cranes and similar specialized machines , published by the International Organization for Standardization (ISO) Other Parts of the standard are: — Part 2: Wheels and rims ; — Part 3: Valves ; — Part 4: Rim profiles and dimensions Cross-references Publication referred to Corresponding British Standard BS AU 50 Tyres and Wheels ISO 4209- : 993 Part Tyres Section Commercial vehicle tyres Subsection a: 995 Specification for metric series tyres (Identical) ISO 4250- a Part Rim profiles and dimensions Section Off-the-road rims Subsection a: 996 a Specification for earthmover rims (Identical) a In preparation The Technical Committee has reviewed the provisions of ISO 3877- and ISO 4223- to which reference is made in the text, and has decided that they are acceptable for use in conj unction with this standard A related British Standard to ISO 3877- is BS AU 50- 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, pages to 6, 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 ii © BSI 09- 999 BS AU 0-1 3.3:1 996 Scope 4.1 Nominal aspect ratio This International Standard specifies the The nominal aspect ratio shall be expressed as a designation, dimensions, load ratings and reference percentage and shall be a multiple of speed for tyres and rims fitted to vehicles such as 4.1 all- terrain equipment, cranes, crash tenders, etc likely to operate on the highway over long distances at reference speed and under constant load Tyre construction code The tyre construction code shall be as follows: — “R” for radial ply tyres In addition the word “RADIAL” may also appear on Normative references the tyre The following standards contain provisions which, 4.1 through reference in this text, constitute provisions of this International Standard At the time of publication, the editions indicated were valid All standards are subj ect to revision, and parties to Nominal rim diameter The nominal rim diameter shall be expressed by a code, as specified in ISO 4250- 3: —, Table 4.1 Service identification agreements based on this International Standard The word “ROAD” shall be used to identify these are encouraged to investigate the possibility of tyres which can be used on roads over long distances applying the most recent editions of the standards at reference speed and under constant load indicated below Members of IEC and ISO maintain registers of currently valid International Standards Tyres, valves and tubes — List of equivalent terms — Part 1: Tyres ISO 3877- : 978, Truck and bus tyres and rims (metric series) — Part 1: Tyres ISO 4209- : 993, ISO 4223- : 989, Definitions of some terms used in the tyre industry — Part 1: Pneumatic tyres ISO 4250- 3: —, Part 3: Rims ) Earth-mover tyres and rims — Definitions For the purposes of this International Standard, the definitions in ISO 4223- apply; equivalent terms are given in ISO 3877- 4.2 Service description The service description may be indicated as follows: Load index 4.2.1 Speed symbol Load index The load index is a numerical code associated with the maximum load a tyre can carry at the speed indicated by its speed symbol The correlation between load indices and tyre load- carrying capacity (TLCC) is as given in Table 4.2.2 Speed symbol The speed symbol indicates the speed category at which the tyre can carry the load corresponding to its load index Tyres for mobile cranes in accordance with this Tyre designation and marking The designation of the tyre shall be shown on its sidewall and shall include the details in 4.1 ; it may International Standard have the speed symbol “E”, which corresponds to 70 km/h 4.3 Other service characteristics also include those in 4.2 and 4.3 4.3.1 In the case of tubeless tyres, the marking 4.1 Tyre size and construction code “TUBELESS” shall be shown on the tyre Tyres for mobile cranes in accordance with this 4.3.2 In the case of a preferred direction of rotation International Standard shall be indicated as of the tyre, an arrow shall be used to indicate that follows: direction 4.4 Example A mobile crane tyre having a) a size and construction of: 4.1 Nominal section width The nominal section width shall be expressed in millimetres, ending in See Annex A for nominal section width steps 1) — nominal section width 605 mm, — nominal aspect ratio 80, — radial construction, — nominal rim diameter code 25; To be published (Revision of ISO 4250- 3: 987) © BSI 09- 999 BS AU 0-1 3.3:1 996 b) a service description of: — load- carrying capacity 000 kg, — reference speed 70 km/h, — service identification “ROAD”; shall be marked 6.2 Limitations In some countries there may be load/speed/inflation pressure limitations because of national requirements 6.3 Tyre loads at speeds other than reference speed When a tyre is fitted on a vehicle with a maximum speed capability different from the tyre reference speed, load capacities shall be modified as shown Tyre dimensions Table and Table show, for 95 and 80 series tyres respectively: a) the tyre designation as indicated in clause ; b) the measuring rim width code; in Table Approved rim contours Approved rim contours are given in Table and Table for 95 series and 80 series tyres respectively For rim dimensions see ISO 4250- c) the design tyre dimensions, i e section width and overall diameter; d) the maximum tyre dimensions in- service Tyre load capacities 6.1 Basic tyre loads Basic tyre loads at 70 km/h (speed symbol E) reference speed and reference inflation pressures for 95 and 80 series tyres are given in Table and Table respectively © BSI 09- 999 BS AU 50-1.3.3:1996 Table — Correlation between load index (LI) and tyre load-carrying capacity (TLCC) Load index TLCC Load index TLCC kg Load index kg TLCC Load index TLCC kg kg 30 900 50 350 70 000 90 600 31 950 51 455 71 50 91 900 32 000 52 550 72 300 92 1 00 33 060 53 650 73 500 93 1 500 34 120 54 750 74 700 94 1 800 35 80 55 875 75 900 95 50 36 2 40 56 000 76 00 96 500 37 300 57 25 77 300 97 850 38 360 58 50 78 500 98 00 39 430 59 375 79 750 99 600 40 500 60 500 80 000 00 000 41 575 61 625 81 50 42 650 62 750 82 500 43 72 63 875 83 750 44 800 64 000 84 000 45 900 65 50 85 50 46 000 66 300 86 500 47 075 67 450 87 750 48 50 68 600 88 000 49 50 69 800 89 300 Table — 95 series tyre dimensions D imensions in millimetres Design tyre Tyre size designation In-service tyre Measuring rim width code Section width Overall Maximum Maximum overall diameter overall width diameter 385/95 R 00 379 369 409 41 385/95 R 00 379 369 409 41 445/95 R 1 25 435 481 483 549 505/95 R 00 496 595 551 672 575/95 R 5 00 566 72 62 81 Table — 80 series tyre dimensions D imensions in millimetres Design tyre Tyre size designation In-service tyre Measuring rim width code Section width Overall Maximum Maximum overall diameter overall width diameter 395/80 R 00 391 67 434 31 445/80 R 00 445 347 494 404 52 5/80 R 00 530 475 588 542 605/80 R 50 61 603 677 680 685/80 R 2 00 689 731 765 81 © BSI 09- 999 BS AU 0-1 3.3:1 996 Table — Basic tyre load ratings for 95 series tyres Reference inflation Basic tyre load Tyre size designation pressure Load index kg kPa 385/95 R 24 90 000 900 385/95 R 25 70 000 900 445/95 R 25 77 300 900 505/95 R 25 86 500 900 575/95 R 25 93 1 500 900 Table — Basic tyre load ratings for 80 series tyres Tyre size designation Basic tyre load Reference inflation pressure kg kPa Load index 395/80 R 25 65 50 700 445/80 R 25 70 000 700 525/80 R 25 79 750 700 605/80 R 25 88 000 700 685/80 R 25 95 50 700 Table — Tyre load-carrying capacity at various speeds Operating speed Tyre load capacity as percentage of load capacity at reference speed km/h 30 30 40 24 50 118 60 112 70 (reference speed) 00 80 82 90 70 00 60 Table — Approved rim contours for 95 series tyres Tyre size designation a Approved rims 385/95 R 24 00/1 385/95 R 25 00/1 445/95 R 25 1 25/2 505/95 R 25 00/2 575/95 R 25 00/3 a The tyre and rim wheel manufacturer should be consulted for confirmation of the suitability of the tyre/wheel assembly for the intended service or for use of alternative rims Table — Approved rim contours for 80 series tyres Tyre size designation a Approved rims 395/80 R 24 00/1 445/80 R 25 00/1 525/80 R 25 00/2 605/80 R 25 50/2 685/80 R 25 22 00/3 a The tyre and rim wheel manufacturer should be consulted for confirmation of the suitability of the tyre/wheel assembly for the intended service or for use of alternative rims © BSI 09- 999 BS AU 50-1.3.3:1996 Annex A (normative) Nominal section width steps Increments Tyre Nominal section width mm 95 series 80 series © BSI 09- 999 u 385 W 385 and u 505 W 505 and u 925 W 925 u 445 W 445 and u 685 W 685 and u 1 85 W 1 85 (follow ISO 4209- : 993, Annex B) 60 70 00 50 80 00 20 blank BS AU 0-1 3.3:1 996 List of references See national foreword © BSI 09- 999 BS AU 0-1 3.3:1 996 ISO 05 71 : BSI — British Standards Institution 995 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 I t 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 I f 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