BRITISH STANDARD AUTOMOBILE SERIES BS AU 50 1 5 5 1998 ISO 10499 2 1998 Tyres and wheels — Part 1 Tyres — Section 5 Industrial vehicle tyres — Subsection 5 5 Specification for solid tyres (metric seri[.]
BRITISH STANDARD AUTOMOBILE SERIES Tyres and wheels — Part 1: Tyres — Section 5: Industrial vehicle tyres — Subsection 5.5: Specification for solid tyres (metric series) for pneumatic tyre rims: Load ratings ICS 43 040 50; 83 60 BS AU 50-1-5.5:1998 ISO 10499-2: 1998 BS AU 50-1-5.5:1998 National foreword This British Standard reproduces verbatim ISO 0499-2: 998 and implements it as the UK national standard 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, pages ii 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 This British Standard, having been prepared under the Amendments issued since publication direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on September 998 © BSI 04-1 999 ISBN 580 29971 Amd No Date Comments BS AU 50-1-5.5:1998 Contents Page National foreword Foreword Text of ISO 0499-2 © BSI 04-1 999 Inside front cover iii i ii blank BS AU 50-1-5.5:1998 Contents Page Foreword iii Scope Normative references Definitions Tyre designations Marking Reference speed Tyre load- carrying capacities Table — Correlation between load index (LI) and tyres load-carrying capacity (TLCC) Table — Correlation between speed symbols and speed category Table — Tyre load capacity ratings for A5 tyres on rims with diameter codes up to and including on counterbalanced lift trucks Table — Tyre load capacity ratings for A5 tyres on rims with diameter codes up to and including on other vehicles in intermittent service ii © BSI 04- 999 BS AU 50-1-5.5:1998 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 subj ect 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 0499-2 was prepared by Technical Committee ISO/TC 31 , rims Tyres, rims and valves, Subcommittee SC 7, Industrial tyres and ISO 0499 consists of the following parts, under the general title Industrial tyres and rims — Rubber solid tyres (metric series) for pneumatic tyre rims: — Part 1: Designation, dimensions and marking; — Part 2: Load ratings Descriptors: Machinery, self-propelled machines, tyres, rubber products, solid tyres, specifications, load capacity, designation, marking, metric system © BSI 04-1 999 iii iv blank BS AU 50-1-5.5:1998 Scope 4.2.2 Speed symbol This part of ISO 0499 specifies the load ratings of The speed symbol shall be as given in Table The the metric series of rubber solid tyres for pneumatic tyre rims primarily intended for industrial vehicles for use on prepared surfaces Designation, dimensions and marking are covered in ISO 0499-1 ; rim contours fitting these tyres are specified in ISO 3739-3 Normative references The following standards contain provisions which, speed symbol or speed category indicates the reference speed, defined as the speed at which the tyre can carry the load corresponding to its load index under the specified service conditions Marking The marking shall consist of a) the designation of the dimensional and constructional characteristics according to through reference in this text, constitute provisions ISO 0499-1 ; of this International Standard At the time of b) the designation of the service description (load publication, the editions indicated were valid All index and speed symbol) standards are subj ect to revision, and parties to agreements based on this International Standard 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 3739-3: 995, Part 3: Rims Industrial tyres and rims — Tyres, valves and tubes — List of equivalent terms — Part 4: Solid tyres ISO 4223-2: 991 , Definitions of some terms used in the tyre industry — Part 2: Solid tyres ISO 5053: 987, Powered industrial trucks — Terminology ISO 0499-1 : 991 , Industrial tyres and rims — Rubber solid tyres (metric series) for pneumatic tyre rims — Part 1: Designation, dimensions and marking ISO 3877-4: 984, Definitions For the purposes of this part of ISO 0499, the definitions given in ISO 3877-4, ISO 4223- and ISO 5053 apply Tyre designations 4.1 Dimensional and constructional characteristics See ISO 0499- 4.2 Service descriptions The service description shall be indicated as follows: Load index Speed symbol 4.2.1 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, under the service conditions specified by the tyre manufacturer The location of the marking of the service description (load index and speed symbol) shall be distinct but in the vicinity of the marking of the dimensional and constructional characteristics EXAMPLE 225/70 — 0/6 39 A5 The characteristics of a tyre with the above markings are as follows: 225: nominal section width equal to 225 mm; 70: nominal aspect ratio equal to 70; 0: nominal rim diameter code, corresponding to 254 mm; 5: nominal rim width code; 39: load index (LI) corresponding to a tyre load of 430 kg; A5: speed symbol corresponding to a speed category of 25 km/h Reference speed The reference speed for tyre load identification of rubber solid tyres for pneumatic tyre rims shall be 25 km/h, i e speed symbol A5 For tyres with a maximum speed below 25 km/h the speed symbol and associated load index shall correspond to the maximum speed of the tyre Tyre load-carrying capacities 7.1 General 7.1.1 If possible, the reference loads or load indices respectively of rubber solid tyres for pneumatic tyre rims should be adj usted to those of the pneumatic tyres of the same size designation and the highest existing load index number in order to assure equivalence or interchangeability NOTE The additional weight of rubber solid tyres for pneumatic tyre rims is not taken into account when converting industrial vehicles from pneumatic tyres to solid tyres The correlation between load indices and tyre load-carrying capacities shall be as given in Table © BSI 04-1 999 BS AU 50-1-5.5:1998 Table — Correlation between load index (LI) and tyres load-carrying capacity (TLCC) LI TLCC LI kg TLCC LI kg TLCC LI kg TLCC LI kg TLCC kg 40 40 80 450 20 400 60 500 200 000 41 45 81 462 21 450 61 625 201 500 42 50 82 475 22 500 62 750 202 000 43 55 83 487 23 550 63 875 203 500 44 60 84 500 24 600 64 000 204 000 45 65 85 51 25 650 65 50 205 500 46 70 86 530 26 700 66 300 206 000 47 75 87 545 27 750 67 450 207 500 48 80 88 560 28 800 68 600 208 000 49 85 89 580 29 850 69 800 209 500 50 90 90 600 30 900 70 000 21 000 51 95 91 61 31 950 71 50 21 1 500 52 200 92 630 32 000 72 300 21 20 000 53 206 93 650 33 060 73 500 21 20 600 54 21 94 670 34 20 74 700 21 21 200 55 21 95 690 35 80 75 900 21 21 800 56 224 96 71 36 240 76 00 21 22 400 57 230 97 730 37 300 77 300 21 23 000 58 236 98 750 38 350 78 500 21 23 600 59 243 99 775 39 430 79 750 21 24 300 60 250 00 800 40 500 80 000 220 25 000 61 257 01 825 41 575 81 250 221 25 750 62 265 02 850 42 650 82 500 222 26 500 63 272 03 875 43 725 83 750 223 27 250 64 280 04 900 44 800 84 000 224 28 000 65 290 05 925 45 900 85 250 225 29 000 66 300 06 950 46 000 86 500 226 30 000 67 307 07 975 47 075 87 750 227 30 750 68 31 08 000 48 50 88 000 228 31 500 69 325 09 030 49 250 89 300 229 32 500 70 335 110 060 50 350 90 600 230 33 500 71 345 111 090 51 450 91 900 231 34 500 72 355 112 1 20 52 550 92 1 200 232 35 500 73 365 113 1 50 53 650 93 1 500 233 36 500 74 375 114 1 80 54 750 94 1 800 234 37 500 75 387 115 21 55 875 95 50 235 38 750 76 400 116 250 56 000 96 500 236 40 000 77 41 117 285 57 25 97 850 237 41 250 78 425 118 320 58 250 98 200 238 42 500 79 437 119 360 59 375 99 600 239 43 750 © BSI 04- 999 BS AU 50-1-5.5:1998 Table — Correlation between speed symbols and speed category Speed symbol Speed category km/h A2 15 A4 20 A5 a a 25 See clause pneumatic tyre rims are based on their application according to vehicle type and speed capability For tyre sizes on rims with diameter code up to and 10 A3 7.2 Load ratings 7.2.1 The permissible loads for rubber solid tyres for including (ISO 0499-1 ), they shall be as given in Table and Table NOTE The data given in Table and Table may be reconsidered in the light of additional field experience a 7.2.2 The 00 % reference load-carrying capacity is 7.1.2 The load capacities of rubber solid tyres for pneumatic tyre rims of the same size designation are independent of the wheel design 7.1.3 Consult the tyre/rim manufacturers for confirmation of the suitability of tyre/rim the load corresponding to the load index marked on the tyre 7.2.3 Calculated loads shall be rounded up to the nearest kg 7.2.4 When fitted in dual formation, the load for the two tyres is twice that for a single tyre combinations, particularly with regard to rim profile and strength Table — Tyre load capacity ratings for A5 tyres on rims with diameter codes up to and including 15 on counterbalanced lift trucks Speed capability of unloaded lift trucks up to 25 km/h Load wheels Steering wheels 30 % 00 % Table — Tyre load capacity ratings for A5 tyres on rims with diameter codes up to and including on other vehicles in intermittent service < km/h 30 % a Speed capability of other vehicles a < km/h 18 % < 25 km/h 00 % This category includes: Drives and steer wheels of other lift trucks, mobile cranes and free- rolling wheels on other vehicles (trailers) up to a maximum distance of 000 m per j ourney © BSI 04-1 999 BS AU 50-1-5.5:1998 ISO 10499-2: 1998 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 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