GB/T 25628-2023Earth-moving machinery—Tooth (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 25628-2010 "Earthmoving Machinery Bucket Teeth". Compared with GB/T 25628-2010, except for structural adjustment and compilation In addition to editorial changes, the main technical changes are as follows.

a) Changed the scope of the standard (see Chapter 1, Chapter 1 of the 2010 edition);

b) Added the term "assembly shake amount" (see 3.5);

c) The normative reference documents for non-assembly dimensional deviations of forgings have been changed (see 5.2, 5.1 of the 2010 edition);

d) Added requirements and test methods for "assembly shake" (see 5.3 and 6.3);

e) Added quality tolerance requirements for shell casting and forging (see 5.4);

f) Added mechanical property requirements for forging (see 5.5).

1 Scope

This document specifies the classification, requirements, test methods, inspection rules, marking and packaging of bucket teeth.

This document applies to bucket teeth of various forms and specifications for earthmoving machinery such as excavators, loaders, scrapers, backhoe loaders, and bulldozers.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 228.1 Tensile testing of metallic materials Part 1: Room temperature test method

GB/T 229 Charpy pendulum impact test method for metal materials

GB/T 230.1 Rockwell hardness test of metallic materials Part 1: Test methods

GB/T 231.1 Brinell hardness test of metallic materials Part 1: Test method

GB/T 531.1 Test method for indentation hardness of vulcanized rubber or thermoplastic rubber Part 1: Shore durometer method (Shore hardness)

GB/T 6414 Casting dimensional tolerances, geometric tolerances and machining allowances

GB/T 12362 Tolerances and machining allowances for steel die forgings

GB/T 21154 Quality measurement methods for complete earthmoving machinery and its working devices and components

3 Terms and definitions

The following terms and definitions apply to this document.