BRITISH STANDARD AUTOMOBILE SERIES BS AU 50 1 5 3 1994 ISO 3739 2 1992 Tyres and wheels — Part 1 Tyres — Section 5 Industrial vehicle tyres — Subsection 5 3 Specification for pneumatic tyres (metric s[.]
BRITISH STANDARD AUTOMOBILE SERIES Tyres and wheels — Part 1: Tyres — Section 5: Industrial vehicle tyres — Subsection 5.3 Specification for pneumatic tyres (metric series) on ° tapered or flat base rims: Load ratings UDC 629.11.012.53:62.182.3 BS AU 50-1.5.3: 1994 ISO 3739-2: 1992 BS AU 50-1.5.3:1994 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Policy Committee (AUE/-) to Technical Committee AUE/4, 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 Bus and Coach Council 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 Automobile Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 February 1994 © BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference AUE/4 Draft for comment 90/77333 DC ISBN 580 22805 Amendments issued since publication Amd No Date Comments BS AU 50-1.5.3:1994 Contents Page Committees responsible Inside front cover National foreword ii Scope Normative references Definitions Reference load-carrying capacity Load ratings Inflation pressures Table — Tyre load capacity ratings for A5 tyres on counterbalanced lift trucks Table — Tyre load capacity ratings for A5 tyres on side loaders Table — Tyre load capacity ratings for A5 tyres on other vehicles List of references Inside back cover © BSI 10-1999 i BS AU 50-1.5.3:1994 National foreword This Subsection of this Part of BS AU 50 has been prepared under the direction of the Automobile Standards Policy Committee and is identical with ISO 3739-2:1992 Industrial tyres and rims — Part 2: Pneumatic tyres (metric series) on 5° tapered or flat base rims — Load ratings, published by the International Organization for Standardization (ISO) Other Parts of this standard are: — Part 2: Wheels and rims; — Part 3: Valves; — Part 4: Rim profiles and dimensions Cross-references The Technical Committee has reviewed the provisions of ISO 4223-1 and ISO 5053 to which normative reference is made in the text and has decided that they are acceptable for use in conjunction with this standard 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 and 2, 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 10-1999 BS AU 50-1.5.3:1994 Scope This part of ISO 3739 specifies the load ratings of the metric series of pneumatic tyres primarily intended for industrial vehicles for use on prepared surfaces ISO 3739-1 deals with designation, dimensions and marking; ISO 3739-3 deals with rim contours for these tyres Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 3739 At the time of publication, the editions indicated were valid All standards are subject to revision, and parties to agreements based on this part of ISO 3739 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below Members of IEC and ISO maintain registers of currently valid International Standards ISO 4223-1:1989, Definitions of some terms used in the tyre industry — Part 1: Pneumatic tyres ISO 5053:1987, Powered industrial trucks — Terminology Definitions For definitions of terms relating to tyres, see ISO 4223-1; for definitions of terms relating to industrial trucks and machines, see ISO 5053 5.2 For 100 % reference, see clause 5.3 Calculated loads shall be rounded to nearest kg above 5.4 When fitted in dual formation, the load for the two tyres is twice that for a single tyre Table — Tyre load capacity ratings for A5 tyres on counterbalanced lift trucks Speed capability of counterbalanced lift truck: up to 25 km/h Load wheels 130 % up to 35 km/h Steering wheels 100 % Load wheels 125 % Steering wheels 92,5 % Table — Tyre load capacity ratings for A5 tyres on side loaders Speed capability of side loader: static up to 25 km/h 151 % 100 % up to 35 km/h 92,5 % Table — Tyre load capacity ratings for A5 tyres on other vehicles Speed capability of other vehicles: static 151 % up to 10 km/h 130 % up to 25 km/h 100 % up to 40 km/h 89 % up to 50 km/h 84 % Inflation pressures Operating cold inflation pressures should be agreed between tyre and vehicle manufacturers taking into account not only the tyre load-carrying capacity, but 4.1 The 100 % reference load-carrying capacity is also the operating conditions, the maximum speed, the load corresponding to the load index marked on the position of the tyre on the vehicle, service the tyre NOTE Correlation between load index and tyre load-carrying conditions and the construction and characteristics of the vehicle capacity is specified in ISO 3739-1:1992, Table 4.2 Reference load-carrying capacities of several Cold inflation pressure means the pressure taken versions of the same tyre size (same dimensional with the tyre at ambient temperature; it does not and constructional characteristics) shall be based on include any pressure build-up due to tyre usage reference inflation pressures of 550 kPa, 675 kPa, 825 kPa and 000 kPa Reference load-carrying capacity Load ratings 5.1 The permissible loads for industrial tyres are based on their application according to vehicle type and speed capability and shall be as given in Table to Table NOTE The data given in Table to Table may be reconsidered in the light of additional field experience © BSI 10-1999 blank BS AU 50-1.5.3:1994 List of references See national foreword © BSI 10-1999 BS AU 50-1.5.3: 1994 ISO 3739-2: 1992 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: 020 8996 9001 Fax: 020 8996 7001 In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: 020 8996 7111 Fax: 020 8996 7048 Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: 020 8996 7002 Fax: 020 8996 7001 Copyright BSI 389 Chiswick High Road London W4 4AL Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained If permission is granted, the terms may include royalty payments or a licensing agreement Details and advice can be obtained from the Copyright Manager Tel: 020 8996 7070