Standard No.:	GB/T 25763-2010
English Name:	Rolling bearings - Needle roller bearings for automotive transmission
Chinese Name:	滚动轴承 汽车变速箱用滚针轴承
Chinese Classification:	J11    Rolling bearing
Professional Classification:	GB    National Standard
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Issued by:	AQSIQ, SAC
Issued on:	2010-12-23
Implemented on:	2011-6-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

1 Scope This Standard specifies coding methods, structural types, technical requirements, measurement methods, inspection rules, markings and rustproof packaging of needle bearings (hereinafter referred to as bearings) for automobile manual transmission gear. This Standard is applicable to the production, inspection and acceptance of bearings. 2 Normative References The following documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding the correction contents), or revisions of, any of these publications do not apply, however, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For dated normative references, the latest edition of the document referred to applies. GB/T 272-1993 Rolling Bearing-Identification Code GB/T 307.1-2005 Rolling Bearings-Radial Bearings-Tolerances (ISO 492: 2002, MOD) GB/T 307.2-2005 Rolling Bearings-Tolerances-Part 2: Measuring and Gauging Principles and Methods (ISO 1132-2: 2001, MOD) GB/T 307.3-2005 Rolling Bearings-General Technical Regulations GB/T 2828.1-2003 Sampling Procedures for Inspection by Attributea-Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (ISO 2859-1: 1999, IDT) GB/T 3077-1999 Alloy Structure Steels GB/T 4199-2003 Rolling Bearings-Tolerances-Part 1: Terms and Definitions (ISO 1132-1: 2000, MOD) GB/T 4604-2006 Rolling Bearings-Radial Internal Clearance (ISO 5753: 1991, MOD) GB/T 4605-2003 Rolling Bearings-Thrust Needle Roller and Cage Assemblies, Thrust Washers GB/T 6930-2002 Rolling Bearings-Vocabulary (ISO 5593: 1997, IDT) GB/T 7811-2007 Rolling Bearings-Symbols for Quantities (ISO 15241: 2001, IDT) GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging GB/T 13237-1991 Cold-Rolled Quality Carbon Structural Steel Shects and Strips GB/T 18254-2002 High-Carbon Chromium Bearing Steel GB/T 20056-2006 Rolling Bearings-Radial Needle Roller and Cage Assemblies-Dimensions and Tolerances (ISO 3030: 1996, MOD) GB/T 24605-2009 Rolling Bearings-Marking for Products GB/T 24607-2009 Rolling bearings-Test and Assessment for Life and Reliability GB/T 25769-2010 Rolling Bearings-Measuring Methods for Radial Internal Clearance JB/T 1255-2001 Specification for Heat-Treatment of Rolling Bearing Parts Made from High Carbon Chromium Steel JB/T 2974-2004 Rolling Bearings-Identification Code-Supplemental Regulations JB/T 6639-2004 Rolling Bearing Parts-Skeleton Acrylonitrile-buta-diene Copolymers Seal-Specifications JB/T 6641-2007 Rolling Bearings-Residual Magnetism and Its Assessment Method JB/T 7048-2002 Rolling Bearing Parts-Plastic Cage-Specifications JB/T 7050-2005 Rolling Bearings-Assessment Methods for Cleanliness JB/T 7051-2006 Rolling Bearing parts-Methods for the Measurement and Assessment of Surface Roughness JB/T 7363-2002 Specifications for Carbonitriding Heat Treatment of Rolling Bearing Parts JB/T 8878-2001 Rolling Bearings - Drawn up Needle Roller Bearings - Specifications JB/T 8881-2001 Specifications for Carburizing Heat Treatment of Rolling Bearing Parts JB/T 10336-2002 Rolling Bearings and Parts-Supplementary Specifications JB/T 10337-2002 Rolling Bearing Parts-Pressing Cage-Specifications YB/T 5058-2005 Cold-Rolled Spring and Tool Steel Strips

Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Symbols 5 Classification of Needle Bearings for Transmission Gear 6 Identification Code 7 Structural Types 8 Technical Requirements 9 Inspection Methods 10 Inspection Rules 11 Marking 12 Rustproof Packaging Appendix A (Informative) Technical Specifications of Fitting Place of Shaft/Housing and Needle Bearing Bibliography