GB/T 26741-2023Brake linings for motor tricycle (English PDF)

Foreword

This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.

This document serves as a replacement of GB/T 26741-2011 Brake Linings for Motor Tricycle.

In comparison with GB/T 26741-2011, apart from structural adjustments and editorial modifications, the main technical changes are as follows:

a) The content of "Terms and Definitions" is modified (see Chapter 3; Chapter 3 of Version 2011);

b) The requirements for "friction performance" are modified (see 5.3; 5.3 of Version

2011);

c) The requirements for "shear strength" at room temperature are modified, and the requirements at high temperatures are added (see 5.4; 5.4 of Version 2011);

d) The requirements for "limit of harmful ingredients" are added (see 5.5);

e) The test method for "friction performance" is modified (see 6.3; 6.3 of Version 2011);

f) The test method for "limit of harmful ingredients" is added (see 6.5);

g) The requirements for "exit-factory inspection" and "type inspection" are added (see 7.1.1 and 7.1.2);

h) The requirements for batch grouping principle, sampling and result determination in "Inspection Rules" are modified (see 7.1.3, 7.2 and 7.3; Chapter 7 of Version 2011);

i) The content of markings is modified (see 8.1; 8.1 of Version 2011).

Please be noted that certain content of this document may involve patents. The institution issuing this document does not undertake the responsibility of identifying these patents.

1 Scope

This document specifies the classification, requirements, test methods, inspection rules, markings, packaging, transportation and storage of brake linings for motor tricycle.

This document is applicable to brake linings for motor tricycle (hereinafter referred to as "the linings").

2 Normative References

The contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 2828.1 Sampling Procedures for Inspection by Attribute - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection

GB/T 5620 Road Vehicles - Vocabulary and Definition for Braking of Automotive Vehicles and Their Trailers

GB 5763 Brake Linings for Automobiles

GB/T 17469 Characteristics Evaluation of Brake Linings for Automobile - Small Sample Bench Test Method

GB/T 22309 Road Vehicles - Brake Linings - Shear Test Method for Disc Brake Pad and Drum Brake Shoe Assemblies

GB/T 23263 Determination of Asbestos in Products

GB/T 34007-2017 Road Vehicles - Brake Lining Friction Materials - Drag Test Method for Friction Performance

JC/T 2268 Measurement of Copper and Other Elements in Brake Friction Materials

QC/T 944 Test Method for Poly-brominated Biphenyls (PBBs) and Poly-brominated Diphenyl Ethers (PBDEs) in Automobile Materials

3 Terms and Definitions

The terms and definitions defined in GB/T 5620 and GB 5763 are applicable to this document.

5 Requirements

6 Test Methods

6.5.2 The determination of lead, mercury, cadmium and hexavalent chromium contents shall be carried out in accordance with the stipulations of JC/T 2268.

6.5.3 The determination of polybrominated biphenyls and polybrominated diphenyl ether contents shall be carried out in accordance with the stipulations of QC/T 944.

7 Inspection Rules