Standard No.:	JB/T 8924-2010
English Name:	Rolling bearings-Rolling bearings for railway locomotive
Chinese Name:	滚动轴承 铁路机车用轴承
Chinese Classification:	J11    Rolling bearing
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Issued by:	Ministry of Industry and Information Technology
Issued on:	2010-02-11
Implemented on:	2010-7-1
Status:	abolished
Abolished on:	2024-07-11
Superseding:	JB/T 8924-1999 Specifications of rolling bearings for railway locomotive
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 the designation method, boundary dimensions, technical requirements, measurement method and inspection rules of rolling bearings for railway locomotive (hereinafter referred to as “bearings”). This standard is applicable to the production and inspection of bearing manufacturer and customer acceptance. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative 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－Measuring and Gauging Principles and Methods(ISO 1132-2: 2001, Roiling bearings-Tolerances-Part 2: Measuring and gauging principles and methods, MOD) GB/T 307.3-2005 Rolling Bearings-General Technical Regulations GB/T 3203-1982 Specification for Carburizing Steels of Bearings GB/T 7811-2007 Rolling Bearings-Symbols for Quantities (ISO 15241: 2001, MOD) GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging GB/T 18254-2002 High-carbon Chromium Bearing Steel 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 3016-2004 Rolling Bearings-Packaging and Packing Box-Specifications JB/T 3573-2004 Rolling Bearings-Methods for the Measurement of Radial Internal Clearance JB/T 3574-1997 Rolling Bearings-Marking for Products JB/T 5391-2007 Rolling Bearings-Magnetic Particle Inspection Code of Rolling Bearing Parts for Railway Locomotive and Rolling Stock JB/T 5392-2007 Rolling Bearings-Crack Test of Rolling Bearings Parts for Railway Locomotive and Rolling Stock JB/T 8881-2001 Specifications for Carburizing Heat Treatment of Rolling Bearing Parts JB/T 8921-1999 Rolling Bearings and Commercial Parts-Inspection Rules

Contents Foreword I 1 Scope 2 Normative References 3 Symbols 4 Designation Methods 5 Boundary Dimensions 6 Technical Requirements 6.1 Materials and Heat Treatment 6.2 Tolerance 6.3 Structural Design of Bearings 6.4 Bearing Internal Clearance 6.5 Appearance Quality 6.6 Others 7 Measurement Methods 8 Inspection Rules 9 Marking, Rust Prevention and Packaging 9.1 Marking 9.2 Rustproof Packaging 9.3 Others Appendix A (Normative) Types, Boundary Dimensions and Internal Clearance of Rolling Bearings for Railway Locomotive A.1 Boundary Dimensions and Internal Clearance of Locomotive Axlebox Bearings A.2 Boundary Dimensions and Internal Clearance of Traction Motor and Main Generator Bearings A.3 Boundary Dimensions and Internal Clearance of Group Interchange Transmission System Bearings A.4 Boundary Dimensions and Internal Clearance of Transmission System Bearings Figure 1 Measurement Diagram for Axial Internal Clearance of QJ 0000 Type Bearing Table 1 Difference of Mean Bore Diameter and Difference of Single Width of Inner Ring Table 2 Classification of Bearing Bore Diameter of Locomotive Axle Table 3 Classification of Bore Diameter of Crankcase Bearing of Diesel Engine Table 4 Classification of Bore Diameter of Wheel set Hollow Shaft Drive Bearing Table A.1 Boundary Dimensions and Internal Clearance of Locomotive Axlebox Bearing Table A.2 Boundary Dimensions and Internal Clearance of Traction Motor and Main Generator Bearings Table A.3 Boundary Dimensions and Internal Clearance of Group Interchange Transmission System Bearings Table A.4 Boundary Dimensions and Internal Clearance of Transmission System Bearings