GB/T 4501-2016 (GB/T 4501-2023 Newer Version) PDF English
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Laboratory test methods for truck and bus tyres capabilities
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| GB/T 4501-2016 | English | 85 |
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Laboratory test methods for truck and bus tyres capabilities
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| GB/T 4501-2008 | English | 70 |
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Laboratory test method for truck and bus tyres capabilities
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| GB/T 4501-1998 | English | 319 |
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Endurance test for truck and bus tyres--Drum method
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| GB/T 4501-1984 | English | RFQ |
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Endurance test for truck and bus tyres--Drum methods
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GB/T 4501-2016: PDF in English (GBT 4501-2016) GB/T 4501-2016
GB
ICS 83.160.10
G 41
Replacing GB/T 4501-2008
Laboratory Test Methods for Truck and Bus
Tyres Capabilities
(ISO 10454.1993, Truck and bus tyres -
Verifying tyre capabilities - Laboratory test methods, MOD)
ISSUED ON. JUNE 14, 2016
IMPLEMENTED ON. MAY 1, 2017
Jointly Issued by. General Administration of Quality Supervision,
Inspection and Quarantine;
Standardization Administration of the People's
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References... 6
3 Terms and Definitions ... 7
4 Test Equipment and Precision Requirements ... 7
5 Test Method... 8
6 Judgment Rules ... 13
7 Test Report ... 14
Appendix A (Informative) Comparison of Chapter and Article Numbers between
This Standard and ISO 10454.1993 ... 16
Appendix B (Informative) Technical Differences between This Standard and
ISO 10454.1993 and Their Reasons ... 18
Appendix C (Normative) Corresponding Relationship between Tyre Speed
Symbol and Speed ... 22
Foreword
This Standard is drafted according to the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 4501-2008 "Endurance test for truck and bus tyres -
Drum method". Compared with GB/T 4501-2008, main technical changes of this
Standard are as follows.
- MODIFY the expression of normative references (see Chapter 2 of this edition;
Chapter 2 of 2008 edition);
- MODIFY the description of plunger material of strength tester, from “metal” to
“steel” (see 4.2.1 of this edition; 4.2.1 of 2008 edition);
- MODIFY the precision of filling pressure gauge, from “precision is ± 20 kPa” to
“precision is ± 10 kPa” (see 4.3 of this edition; 4.3 of 2008 edition);
- MODIFY the plunger diameter for strength test of truck and bus tyres (see Table
2 of this edition; Table 2 of 2008 edition);
- MODIFY the requirements for the test rim (see 5.1.1.2, 5.2.1.2 and 5.3.1.2 of this
edition; 5.1.1.2, 5.2.1.2 and 5.3.1.2 of 2008 edition);
- ADD the endurance test conditions of radial tyres with the maximum load rating
of a single tyre > 1500 kg and the speed symbol of N and P, and diagonal tyres
with the maximum load rating of a single tyre > 1500 kg and the speed symbol
of L (see Table 3 of this edition; Table 3 of 2008 edition);
- MODIFY Note 2 of Endurance Test Conditions of Truck and Bus Tyres (Table 3),
FROM “It is for the tyres of which the nominal section width is ≥ 13.00 and
maximum speed is 70 km/h. Test drum speed shall be 30 km/h for test.” TO “For
tyres with the maximum load rating of a single tyre > 1500 kg, and the maximum
speed is ≤ 70 km/h, test drum speed shall be 30 km/h for test.” (see Table 3 of
this edition; Table 3 of 2008 edition);
- ADD Note 3 of Endurance Test Conditions of Truck and Bus Tyres (Table 3), “For
radial tyres with the maximum load rating a single tyre > 1500 kg, and the
maximum speed is ≥ 160 km/h, test drum speed shall be 110 km/h for test.” (see
Table 3 of this edition; Table 3 of 2008 edition);
- DELETE the content of measuring the main dimensions of tyres after staying in
endurance test (see 5.1.2.1 of 2008 edition);
- MODIFY the inspection procedure after the completion of endurance test (see
5.1.2.5 of this edition; 5.1.2.5 of 2008 edition);
For the convenience of use, the following editorial changes are made in this Standard.
a) MODIFY the standard name;
b) DELETE the Bibliography of the international standard.
This Standard was proposed by China Petroleum and Chemical Industry Association.
This Standard shall be under the jurisdiction of the National Technical Committee 19
on Tyre and Rim of Standardization Administration of China (SAC/TC 19).
Main drafting organizations of this Standard. Aeolus Tyre Co., Ltd., Longmarch Tyre
Co., Ltd., Shandong Linglong Tire Co., Ltd., Zhongce Rubber Group Co., Ltd., Beijing
Research & Design Institute of Rubber Industry, Double Star Group Co., Ltd., Triangle
Tyre Co., Ltd., Guizhou Tyre Co., Ltd., Guangzhou Wanli Rubber Tyre Co., Ltd., Double
Coin Co., Ltd., Sailun Jinyu Group Co., Ltd., Xia’men Cheng Shin Rubber Industry Co.,
Ltd., Guangzhou Fengli Rubber Tyre Co., Ltd., Qingdao Senqilin Tyre Co., Ltd.,
Bridgestone (China) Investment Co., Ltd., Dalian Goodyear Tyre Co., Ltd., Michelin
(China) Investment Co., Ltd., Continental Tires (China) Co., Ltd., Shantou Haoda Tyre
Test Equipment Co., Ltd., Tianjin Jiurong Wheel Technology Co., Ltd.
Main drafters of this Standard. Ren Shaowen, Feng Yaoling, Bai Tao, Chen Shaomei,
Mao Jianqing, Wang Kexian, Xu Lihong, Qi Shunqing, Zhou Pengcheng, Hu Xiangqi,
Li Qinzhu, Li Bowei, Xu Hui, Chen Jianming, Peng Jinyu, Sheng Baoxin, Fu Guangping,
Yin Qingye, Lu Yi, Ma Zhong, Chen Xun, Gu Zheng, Mou Shouyong.
The previous editions replaced by this Standard are as follow.
- GB/T 4501-1984, GB/T 4501-1998, GB/T 4501-2008;
- GB/T 6327-1986, GB/T 6327-1996;
- GB/T 7035-1986, GB/T 7035-1993.
Laboratory Test Methods for Truck and Bus Tyres
Capabilities
1 Scope
This Standard specifies test methods for verifying the capabilities of tyres for truck and
bus, including terms and definitions, test equipment and precision, test conditions, test
procedure, judgment criterion and test report, etc. In the test methods given, only some
may be required depending on the type of tyre to be tested.
This Standard includes.
(1) Endurance test — test the endurance capability of tyres by the travel distance
under specified load and speed;
(2) High speed test — test the capability of the tyre according to its speed symbol;
(3) Strength test — test the capability of the tyre structure with respect to braking
energy of tread cap.
The test methods presented in this Standard are suitable for grading of tyre capabilities
or quality levels.
This Standard is applicable to new pneumatic tyres of truck and bus.
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 referenced document (including any amendments) applies.
GB/T 2977 Size designation, dimensions, inflation pressure and load capacity for
truck tyres
GB/T 6326 Tyre terms and definitions (GB/T 6326-2005, ISO 4223-1.2002,
Definitions of some terms used in tyre industry - Part 1. Pneumatic tyres, NEQ)
GB 9744 Truck tyres
conditions of both single tire and twin tires are specified, take the maximum load rating
of single tire as final).
5.1.1.3 Maintain the tyre and rim assembly at ambient temperature of 38°C ± 3°C for
at least 3 h.
5.1.1.4 The test drum shall be started at uniform acceleration to the initial test speed
within 5 min.
5.1.1.5 Endurance test conditions of tyres at each speed rating shall meet those
specified in Table 3.
5.1.2 Test procedure
5.1.2.1 Re-adjust the tyre pressure to the value specified in 5.1.1.2.
5.1.2.2 Mount the tyre and rim assembly on a test axle so that the tyre may be
pressed radially against the outer face of the test drum.
5.1.2.3 During the test, the ambient temperature shall be maintained at 38°C ± 3°C.
5.1.2.4 Conduct the test in accordance with those specified in Table 3. Conduct test
according to specified procedure. In each successive phase of the test, without
interruption, re-adjust the pneumatic pressure and cool down tyre artificially, and the
test loads shall be maintained constant.
5.1.2.5 After test is completed according to the specified procedures, cool the test
tyre down naturally for 15 min ~ 25 min, measure the pneumatic pressure during this
specified duration. Dismantle the tyre after complete cooling. Carry out appearance
inspection.
Table 3 Endurance Test Conditions of Truck and Bus Tyres
Tyre speed
symbol a
Test drum speed (km/h) Load as percentage of maximum load rating (%)
Radial tyres Diagonal tyres
Duration
7h
(Period 1)
16h
(Period 2)
24h
(Period 3)
a) Single tire with maximum load rating ≤ 1500 kg
F 35 35
G 40 40
J 50 50
K 55 55
L 65 55 70 90 105
5.3.2.1 Re-adjust the tyre pressure to the pneumatic pressure specified in 5.3.1.2.
Mount the tyre and rim assembly on a tester.
5.3.2.2 Conduct test at 5 test points approximately equally spaced around the
circumference of the tyre.
5.3.2.3 Position the plunger as near to the centreline as possible; avoid penetration
into the tread grooves.
5.3.2.4 Force the plunger perpendicularly into the tread at a rate of 50 mm/min ± 2.5
mm/min until the tread is penetrated or achieving the minimum breaking energy
specified in Table 5 and Table 6. Check the pressure before moving to the next test
point.
5.3.2.5 Measure and record the force (F) and pressed depth (penetration P) at the
moment of plunger stops moving at each test point.
5.3.2.6 If the tyre fails...
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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