GB/T 33206-2025 Performance testing of automotive V-ribbed belts English, Anglais, Englisch, Inglés, えいご
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ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB/T 33206-2025
Replaces GB/T 33206-2016
Performance testing of automotive V - ribbed belts
汽车多楔带性能试验方法
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Test Belts, Pulleys, and Laboratory Ambient Temperature
5 High-Temperature Constant-Tension Life Test
6 Misalignment Noise Test
7 Pilling Performance Test
8 High-Low Temperature Cycle Test
1 Scope
This document describes the performance test methods for automotive multi-ribbed belts of PK type (hereinafter referred to as "belts"). These include high-temperature constant-tension life test, misalignment noise test, pilling performance test, high-low temperature cycle test, contamination test, and five-pulley flex test methods.
This document applies to multi-ribbed belts used for driving components such as fans, motors, water pumps, compressors, power steering pumps, and superchargers in internal combustion engines of automobiles.
This document does not apply to elastic multi-ribbed belts.
2 Normative References
The following documents contain provisions that, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition corresponding to that date applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2941 Rubber—General procedures for preparing and conditioning test pieces for physical test methods
GB/T 6931.1 Belt drives—Vocabulary—Part 1: Basic terms
GB/T 6931.2 Belt drives—Vocabulary—Part 2: V-belt and multi-ribbed belt drives
GB/T 13552 Automotive multi-ribbed belts
GB/T 33513 Belt drives—Automotive multi-ribbed belts and pulleys—PK profile: Dimensions
3 Terms and Definitions
The terms and definitions defined in GB/T 6931.1 and GB/T 6931.2 apply to this document.
4 Test Belts, Pulleys, and Laboratory Ambient Temperature
4.1 Test Belts
The test belts shall conform to the provisions of GB/T 13552. The effective length of the specimen shall be (1 200 ± 10) mm. The test data are applicable to all belts of the same structure and manufactured under the same conditions, regardless of belt length.
4.2 Test Pulleys
The test pulleys shall conform to the manufacturing tolerances specified in GB/T 33513. The pulley diameter tolerance shall be controlled within ±0.1 mm, and the groove angle tolerance shall be controlled within ±0.5°.
4.3 Laboratory Ambient Temperature
The laboratory ambient temperature for the performance test methods in Chapter 5, 6, 8, 9, and 10 shall be 18°C to 32°C. The ambient temperature for the performance test method in Chapter 7 shall be (21 ± 5) °C, or as agreed upon between the supplier and the purchaser.
5 High-Temperature Constant-Tension Life Test
5.1 Test Objective
To test the durability of the belt under high-temperature and high-load conditions.
5.2 Test Equipment
5.2.1 A schematic diagram of the high-temperature constant-tension life test apparatus is shown in Figure 1.
5.7 Acceptance Criteria
The producer and user may agree upon other acceptable or rejectable acceptance criteria.
6 Misalignment Noise Test
6.1 Test Objective
To determine the noise performance of the belt under different degrees of axial misalignment and environmental conditions.
6.2 Test Equipment
6.2.1 A schematic diagram of the misalignment noise test apparatus is shown in Figure 4.
Any observed belt noise shall be recorded. For any observed belt noise, the aging state of the belt and the misalignment angle should be noted. Record the failure mode.
7 Pilling Performance Test
7.1 Test Objective
To determine the anti-pilling performance of new belts.
7.2 Test Equipment
7.2.1 A schematic diagram of the pilling performance test apparatus is shown in Figure 5.
8 High-Low Temperature Cycle Test
8.1 Test Objective
To test the belt's ability to cycle between high-temperature, high-load conditions and low-temperature, no-load conditions.
8.2 Test Equipment
8.2.1 The high-low temperature cycle test uses the same test apparatus as the high-temperature constant-tension life test. A schematic diagram is shown in Figure 1.
8.2.2 The test apparatus for the high-low temperature cycle test of the belt shall comply with the provisions of Table 1 and Table 10.
