BS-AU-50-1.2.1A-1995 ISO-4209-1-1993.pdf
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1、BRITISH STANDARD BS AU 50-1.2.1a: 1995 ISO 4209-1: 1993 Tyres and wheels Part 1: Tyres Section 1: Commercial vehicle tyres Subsection 2.1a Specification for metric series tyres UDC 629.114.2/.5. 012.55 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:45 GMT
2、+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.2.1a:1995 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 15 June 1995 BSI 09-1999 The following BSI references relate
3、 to the work on this standard: Committee reference AUE/4 Draft for comment 92/72778 DC ISBN 0 580 24169 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee AUE/4, Tyres and wheels for road vehicles, upon which the following
4、 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 Associa
5、tion Institute of Road Transport Engineers (Inc) Motor Cycle Industrys 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. Amendmen
6、ts issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.2.1a:1995 BSI 09-1999i Contents Page Committees responsibleInside front cover National forewordii 1Sco
7、pe1 2Normative reference1 3Definitions1 4Tyre designation1 5Tyre dimensions2 6Tyre dimension tables5 7Method of measurement of tyre dimensions5 8Load ratings6 Annex A (informative) Guideline values for metric series, 5 rims9 Annex B (informative) Guideline values for metric series, 15 rims10 Annex C
8、 (informative) Tyre dimension tables12 Table 1 Nominal rim diameter code and rim width code4 Table 2 Coefficients for calculation of tyre dimensions5 Table 3 Coefficients for calculation of rim widths for truck and bus tyres related to nominal aspect ratio H/S5 Table 4 Correlation between load index
9、 and tyre load-carrying capacity (TLCC)6 Table 5 Correlation between speed symbol and speed category7 Table 6 Load-carrying capacity at various speeds8 Table A.1 Guideline values for metric series, 5 rims9 Table B.1 Guideline values for metric series, 15 rims10 List of referencesInside back cover Li
10、censed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.2.1a:1995 ii BSI 09-1999 National foreword This Subsection of this Part of BS AU 50 has been prepared by Technical Committee AUE/4 and supersedes BS AU 5
11、0-1.2.1:1991, which is withdrawn. It is identical with ISO 4209-1:1993, Truck and bus tyres and rims (metric series) Part 1: Tyres, 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 a
12、nd dimensions. Cross-reference The Technical Committee has reviewed the provisions of ISO 4223-1:1989, 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 necessar
13、y 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 1 t
14、o 12, 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. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02
15、:08:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.2.1a:1995 BSI 09-19991 1 Scope This part of ISO 4209 specifies the designation, dimensions and load ratings of the metric series of tyres primarily intended for trucks and buses. It applies to bias-belted, diagonal and radial tyres for tru
16、cks and buses, mounted on 5 tapered rims and on 15 tapered (drop-centre) rims. It is also applicable to different concepts and types of tyres and rims; in these cases, however, appropriate rim/section ratios K1, coefficients K2, K3, CR and construction codes have been added to Table 2 and Table 3. I
17、SO 4209-2 deals with requirements for rims. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO 4209. At the time of publication, the edition indicated was valid. All standards are subject to revision, and
18、parties to agreements based on this part of ISO 4209 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 4223-1:1989, Definitions of some terms use
19、d in the tyre industry Part 1: Pneumatic tyres. 3 Definitions For the purposes of this part of ISO 4209, the definitions in ISO 4223-1 apply. 4 Tyre designation The designation of the tyre shall be shown on its sidewall and shall include the following markings, to be shown close to each other: size
20、and construction (see 4.1); service condition characteristics (see 4.2). 4.1 Size and construction The size and construction characteristics shall be indicated as follows: (See 4.1.4.) 4.1.1 Nominal section width The nominal section width shall be expressed in millimetres. For tyres fitted to 5 tape
21、r rims and 15 taper rims (code-designated), the nominal tyre section width shall end in 5. 4.1.2 Nominal aspect ratio The nominal aspect ratio shall be expressed as a percentage and shall be a multiple of 5. 4.1.3 Tyre construction code The tyre construction code shall be as follows: B for bias-belt
22、ed construction; D for diagonal/bias construction; R for radial construction. NOTEOther codes will be established for new concepts (constructions) of tyres. 4.1.4 Nominal rim diameter The nominal rim diameter shall be expressed by a code for 5 tapered bead seat rims and 15 tapered bead seat (drop-ce
23、ntre) rims (see Table 1 for code correlations). Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:08:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 50-1.2.1a:1995 2 BSI 09-1999 However, it shall be expressed in millimetres for new and future concepts where
24、 the use of existing tyres on new concept rims or of new concept tyres on existing rims would be incompatible. 4.2 Service condition characteristics The characteristics shall be indicated as follows: 4.2.1 Load index The load index is a numerical code associated with the maximum load a tyre can carr
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