Detail of GB/T 25763-2024

Introduction of GB/T 25763-2024

Rolling bearings - Needle roller bearings for automotive transmission 1 Scope This document specifies the code method, structural type, overall dimension, technical requirements, testing methods, inspection rules, markings, and rustproof packaging for needle roller bearings for automotive transmissions. This document is applicable to the manufacturing of needle roller bearings for automotive transmissions (hereinafter referred to as "bearings"). 2 Normative references The following documents contain requirements which, through reference in this text, constitute provisions 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 272-2017 Rolling bearings Identification code GB/T 307.1-2017 Rolling bearings - Radial bearings - Geometrical product specification (GPS) and tolerance values GB/T 307.2-2005 Rolling bearings - Measuring and gauging principles and methods GB/T 307.3-2017 Rolling bearings - General technical regulations GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T4199-2003 Rolling bearings - Tolerances - Definitions GB/T 4604.1-2012 Rolling bearings - Internal clearance - Part 1: Radial internal clearance for radial bearings GB/T 4605-2003 Rolling bearings - Thrust needle roller and cage assemblies, thrust washers GB/T 6930-2024 Rolling bearings - Vocabulary GB/T 7811-2015 Rolling bearings - Symbols for physical quantities GB/T 8597-2013 Rolling bearings - Rust proof packaging GB/T 20056-2015 Rolling bearings - Radial needle roller and cage assemblies - Boundary dimensions and tolerances GB/T 24605-2009 Rolling bearings - Marking for products GB/T 24607-2023 Rolling bearings - Test and assessment for life and reliability GB/T 25769-2010 Rolling bearings - Measuring methods for radial internal clearance GB/T 28268-2012 Rolling bearings - Specifications of pressed cages GB/T 33624-2017 Rolling bearings - Test and assessment methods for cleanliness GB/T 34891-2017 Rolling bearings - Parts made from high-carbon chromium bearing steels - Specifications for heat treatment JB/T 6639-2015 Rolling bearings - Rubber seals reinforced with a sheet steel insert - Specifications JB/T 6641-2017 Rolling bearings - Residual magnetism and its assessment method JB/T 7048-2011 Rolling bearings - Engineering plastie cages - Specification JB/T 7051-2006 Rolling bearing parts - Methods for the measurement and assessment of surface roughness JB/T 7363-2023 Rolling bearings - Parts made from carbonitriding - Specifications for heat-treatment JB/T 8211-2023 Rolling bearings - Thrust cylindrical roller and cage assemblies, thrust washers JB/T 8878-2011 Rolling bearings - Drawn cup needle roller bearings - Specifications JB/T 8881-2020 Rolling bearings - Parts made from carburizing bearing steels - Specifications for heat treatment JB/T 10336-2017 Rolling bearings - Additional specifications 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 4199-2003 and GB/T 6930-2024 apply. 4 Symbols For the purposes of this document, the symbols given in GB/T 4199-2003 and GB/T 7811-2015 and the following apply. B1: The distance from the inner side of the barrier to the small end face d1: Diameter of inner raceway T: Height of thrust needle bearing assembly

Contents of GB/T 25763-2024

Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Classification of needle roller bearings for transmission 6 Identification codes 7 Structural type 8 Overall dimension 9 Technical requirements 10 Testing methods 11 Inspection rules 12 Marking 13 Rustproof packaging Annex A (Informative) Technical specifications for the fit between the shaft, bearing seat, and needle roller bearing Bibliography