1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58on 5 tapered or flat base rims Designation, dimensions and marking ICS 83.160.99Industrial tyres an
2、d rims Part 1: Pneumatic tyres (metric series) BRITISH STANDARDBS ISO 3739-1:2007BS ISO 3739-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007ISBN 978 0 580 54533 7Amendments issued since publicationAmd. No. Date Com
3、mentscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of ISO 3739-1:2007. It supersedes BS AU50-1-5.2:1994 which is withdrawn.The UK participati
4、on in its preparation was entrusted to Technical Committee AUE/4, Tyres and wheels for motor vehicles.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a Reference numberISO 3
5、739-1:2007(E)INTERNATIONAL STANDARD ISO3739-1Second edition2007-07-01Industrial tyres and rims Part 1: Pneumatic tyres (metric series) on 5 tapered or flat base rims Designation, dimensions and marking Pneumatiques et jantes pour matriel de manutention Partie 1: Pneumatiques (srie millimtrique) mont
6、s sur jantes coniques 5 ou base plate Dsignation, cotes et marquage BS ISO 3739-1:2007ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definition. 1 4 Tyre designations . 2 4.1 Dimensional and constructional characteristics. 2 4.2 Service description. 3 4.3 Other se
7、rvice characteristics 5 5 Marking 5 5.1 General marking 5 5.2 Maximum speed marking. 6 6 Tyre dimensions . 6 6.1 General. 6 6.2 Calculation of design tyre dimensions. 6 6.3 Calculation of maximum overall tyre dimensions in service . 7 7 Design tyre dimensions . 7 8 Tyre size combinations 9 9 Method
8、of measurement of tyre dimensions . 9 Annex A (informative) Tyre size designation. 10 BS ISO 3739-1:2007iv 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 no
9、rmally 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
10、 the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepa
11、re International Standards. 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. Attention is drawn to the possibility that so
12、me of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 3739-1 was prepared by Technical Committee ISO/TC 31, Tyres, rims and valves, Subcommittee SC 7, Industrial tyres and rims. This second editio
13、n cancels and replaces the first edition (ISO 3739-1:1992), which has been technically revised. ISO 3739 consists of the following parts, under the general title Industrial tyres and rims: Part 1: Pneumatic tyres (metric series) on 5 tapered or flat base rims Designation, dimensions and marking Part
14、 2: Pneumatic tyres (metric series) on 5 tapered or flat base rims Load ratings Part 3: Rims BS ISO 3739-1:20071Industrial tyres and rims Part 1: Pneumatic tyres (metric series) on 5 tapered or flat base rims Designation, dimensions and marking 1 Scope This part of ISO 3739 specifies the main requir
15、ements of the metric series of pneumatic tyres primarily intended for industrial vehicles, including designations, dimensions and markings. The tyres are based on the following parameters: speeds not exceeding 50 km/h; use on 5 tapered or flat base rims. The conversion of code-designated industrial
16、tyres into metric-designated tyres is outside the scope of this part of ISO 3739. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the
17、referenced document (including any amendments) applies. ISO 31-0:1992, Quantities and units Part 0: General principles ISO 3739-2:1992, Industrial tyres and rims Part 2: Pneumatic tyres (metric series) on 5 tapered or flat base rims Load ratings ISO 3739-3: Industrial tyres and rims Part 3: Rims ISO
18、 3877-1: Tyres, valves and tubes List of equivalent terms Part 1: Tyres ISO 4223-1: Definitions of some terms used in the tyre industry Part 1: Pneumatic tyres 3 Terms and definition For the purposes of this document, the terms and definitions given in ISO 4223-1 and ISO 3877-1 apply. BS ISO 3739-1:
19、20072 4 Tyre designations 4.1 Dimensional and constructional characteristics 4.1.1 General The characteristics shall be indicated as follows: 4.1.2 Nominal section width The nominal section width of the tyre shall be indicated in millimetres, ending either in 0 or 5. 4.1.3 Nominal aspect ratio The n
20、ominal aspect ratio shall be expressed as a percentage and shall be a multiple of 5. 4.1.4 Tyre construction code The tyre construction code shall be as follows: “D” or “” (dash) indicates diagonal construction; “R” indicates radial ply construction. 4.1.5 Nominal rim diameter code For tyres mounted
21、 on existing rims, the code shall be as given in Table 1. Nominal rim diameter is for calculation of tyre dimensions only. For specified rim diameter, see ISO 3739-3. Table 1 Nominal rim diameter code Nominal rim diameter, DrNominal rim diameter code mm 4 102 6 152 8 203 9 229 10 254 12 305 15 381 B
22、S ISO 3739-1:200734.2 Service description 4.2.1 General The service description shall be indicated as follows: Load index Speed symbol 4.2.2 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 service condit
23、ions specified by the tyre manufacturer. The correlation between load indices and tyre load-carrying capacities shall be as given in Table 2. 4.2.3 Speed symbol The speed symbol shall be as given in Table 3. The speed symbol or speed category indicates the reference speed defined as the speed at whi
24、ch the tyre can carry the load corresponding to its load index under the specified service conditions. The reference speed for tyre load identification of industrial tyres shall be 25 km/h, i.e. speed symbol A5. BS ISO 3739-1:20074 Table 2 Correlation between Load Index (LI) and Tyre Load-Carrying C
25、apacity (TLCC) LI TLCC LI TLCC LI TLCC LI TLCC LI TLCC kg kg kg kg kg 40 140 80 450 120 1 400 160 4 500 200 14 000 41 145 81 462 121 1 450 161 4 625 201 14 500 42 150 82 475 122 1 500 162 4 750 202 15 000 43 155 83 487 123 1 550 163 4 875 203 15 500 44 160 84 500 124 1 600 164 5 000 204 16 000 45 16
26、5 85 515 125 1 650 165 5 150 205 16 500 46 170 86 530 126 1 700 166 5 300 206 17 000 47 175 87 545 127 1 750 167 5 450 207 17 500 48 180 88 560 128 1 800 168 5 600 208 18 000 49 185 89 580 129 1 850 169 5 800 209 18 500 50 190 90 600 130 1 900 170 6 000 210 19 000 51 195 91 615 131 1 950 171 6 150 2
27、11 19 500 52 200 92 630 132 2 000 172 6 300 212 20 000 53 206 93 650 133 2 060 173 6 500 213 20 600 54 212 94 670 134 2 120 174 6 700 214 21 200 55 218 95 690 135 2 180 175 6 900 215 21 800 56 224 96 710 136 2 240 176 7 100 216 22 400 57 230 97 730 137 2 300 177 7 300 217 23 000 58 236 98 750 138 2
28、360 178 7 500 218 23 600 59 243 99 775 139 2 430 179 7 750 219 24 300 60 250 100 800 140 2 500 180 8 000 220 25 000 61 257 101 825 141 2 575 181 8 250 221 25 750 62 265 102 850 142 2 650 182 8 500 222 26 500 63 272 103 875 143 2 725 183 8 750 223 27 250 64 280 104 900 144 2 800 184 9 000 224 28 000
29、65 290 105 925 145 2 900 185 9 250 225 29 000 66 300 106 950 146 3 000 186 9 500 226 30 000 67 307 107 975 147 3 075 187 9 750 227 30 750 68 315 108 1 000 148 3 150 188 10 000 228 31 500 69 325 109 1 030 149 3 250 189 10 300 229 32 500 70 335 110 1 060 150 3 350 190 10 600 230 33 500 71 345 111 1 09
30、0 151 3 450 191 10 900 231 34 500 72 355 112 1 120 152 3 550 192 11 200 232 35 500 73 365 113 1 150 153 3 650 193 11 500 233 36 500 74 375 114 1 180 154 3 750 194 11 800 234 37 500 75 387 115 1 215 155 3 875 195 12 150 235 38 750 76 400 116 1 250 156 4 000 196 12 500 236 40 000 77 412 117 1 285 157
31、4 125 197 12 850 237 41 250 78 425 118 1 320 158 4 250 198 13 200 238 42 500 79 437 119 1 360 159 4 375 199 13 600 239 43 750 BS ISO 3739-1:20075Table 3 Correlation between speed symbol and speed category Speed category Speed symbol km/h A2 10 A3 15 A4 20 A5a25 aA6 30 A7 35 A8 40 B 50 aReference spe
32、ed for industrial tyres related to load capacity. 4.3 Other service characteristics 4.3.1 The word “TUBELESS” shall be used to characterize tyres that can be used without a tube. 4.3.2 The prefix letters “IN” to dimensional and construction characteristics (see 4.1.1) are an optional marking for ind
33、ustrial service. 4.3.3 Specific indications (if required) may be added to show, for example, the preferred direction of rotation, indicated by an arrow. 5 Marking 5.1 General marking The marking shall consist of a) the designation of the dimensional and constructional characteristics, b) the designa
34、tion of the service description (load index and speed symbol), c) the designation of other service characteristics. 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 characte
35、ristics. No location is specified for the markings related to other service characteristics (see 4.3.1 and 4.3.3). EXAMPLE 180/65R9 marking of dimensional and constructional characteristics 116 A5 marking of load index and speed symbol (distinct location but in the vicinity of the preceding marking)
36、 TUBELESS location left to the discretion of the tyre manufacturer BS ISO 3739-1:20076 The characteristics of a tyre with the above markings are as follows: 180 nominal section width equal to 180 mm; 65 nominal aspect ratio equal to 65; R radial ply construction; 9 nominal rim diameter code, corresp
37、onding to 229 mm; 116 load index (LI) corresponding to a tyre load of 1 250 kg; A5 speed symbol corresponding to a speed category of 25 km/h; TUBELESS tyre to be used without a tube. 5.2 Maximum speed marking If the maximum speed of a tyre is less than 50 km/h (see ISO 3739-2:1992, Table 3), its act
38、ual maximum speed shall be marked on the tyre, e.g. “40 km/h max.” or “max. 40 km/h”. 6 Tyre dimensions 6.1 General The formulae-derived values for design tyre dimensions shall be rounded to the nearest millimetre. For rounding of values, see ISO 31-0:1992, Annex B. 6.2 Calculation of design tyre di
39、mensions 6.2.1 Theoretical rim width, RthThe theoretical rim width, Rth, is equal to the product of the nominal section width, SN, and the rim/section ratio, K1:th 1 NR KS= For industrial tyres mounted on 5 tapered or flat base rims, K1= 0,7 applies to tyres with nominal aspect ratios (H/S) from 60
40、to 95 inclusive, and K1= 0,8 applies to tyres with aspect ratios (H/S) from 50 to 55 (where H is the design tyre section height and S is the design tyre section width). 6.2.2 Design tyre section width, S The design tyre section width, S, is the nominal section width, SN, transferred from the theoret
41、ical rim, Rth, to the measuring rim, Rm: ()Nmth0,4SS R R=+ where Rmand Rthare expressed in millimetres. BS ISO 3739-1:200776.2.3 Design tyre section height, H The design tyre section height, H, is equal to the product of the nominal section width, SN, and the nominal aspect ratio, H/S, divided by 10
42、0 (H/S expressed as a percentage): 1N100HHSS= 6.2.4 Design tyre overall diameter, DOThe design tyre overall diameter, DO, is the sum of the nominal rim diameter, Dr, plus twice the design tyre section height, H: Or2D DH=+ For the values of Drto be used, see Table 1. 6.3 Calculation of maximum overal
43、l tyre dimensions in service 6.3.1 General This calculation is for use by vehicle manufacturers when designing for tyre clearance. These dimensions shall be calculated with the coefficients appropriate to the design tyre section width and design tyre section height (see Table 4). 6.3.2 Maximum overa
44、ll width in service, WmaxThe maximum overall width in service, Wmax, is equal to the product of the design tyre section width, S, and the appropriate coefficient, a (see Table 4): maxWSa= 6.3.3 Maximum overall diameter in service, DO,maxThe maximum overall diameter in service, DO,max, is equal to th
45、e nominal rim diameter, Dr, plus twice the product of the design tyre section height, H, and the appropriate coefficient, b (see Table 4): ( )O,max r2D DHb=+ Table 4 Coefficients for calculation of maximum overall tyre dimensions in service Nominal aspect ratio Coefficients Tyre construction Constru
46、ction code H/S a b Diagonal “D” or “” Radial “R” 50 to 95 1,08 1,08 7 Design tyre dimensions The relevant dimensions for the recommended metric series of industrial tyre nominal tyre section width, measuring rim width, design tyre section width and design tyre section height for tyres of nominal asp
47、ect ratios of 60 to 95 are shown in Table 5, tyres of aspect ratios of 50 to 55 are shown in Table 6. BS ISO 3739-1:20078 Table 5 Tyre dimensional guidelines for tyres 60 to 95 series, inclusive Nominal section width Design tyre dimensions mm SNMeasuring rim width codeaSection width Section height,
48、H, at nominal aspect ratios, H/S (%) mm S 95 90 85 80 75 70 65 60 100 2.5 98 95 90 85 80 75 70 65 60 110 3.25 112 105 99 94 88 83 77 72 66 125 3.25 123 119 113 106 100 94 88 81 75 140 4.0 141 133 126 119 112 105 98 91 84 160 4.0 156 152 144 136 128 120 112 104 96 180 5.0 180 171 162 153 144 135 126
49、117 108 200 5.0 195 190 180 170 160 150 140 130 120 225 6.5 228 214 203 191 180 169 158 146 135 250 6.5 246 238 225 213 200 188 175 163 150 280 8.0 283 266 252 238 224 210 196 182 168 315 8.0 308 299 284 268 252 236 221 205 189 355 10.0 357 337 320 302 284 266 249 231 213 aCoefficient K1= 0,7. Table 6 Tyre dimensional guidelines for tyres 55 series and below Nominal section width Design tyre dimensions mm SNMeasuring rim width codeaSection width Section height, H, at nomi
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