Standard No.:	JB/T 8568-2010
English Name:	Rolling bearings-Cylindrical roller bearing track rollers for conveying chains
Chinese Name:	滚动轴承 输送链用圆柱滚子滚轮轴承
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:	valid
Superseding:	JB/T 8568-1997
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	204.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the structural types, designations, boundary dimensions, technical requirements, measurement methods, inspection rules and rustproof packaging of cylindrical roller bearing track rollers for conveying chains (hereinafter referred to as “bearings”). This standard is applicable to the production, inspection and customer acceptance of finished bearings. 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 307.2-2005 Rolling Bearings-Measuring and Gauging Principles and Methods (ISO 1132-2:2001, Rolling Bearings-Tolerances-Part 2: Measuring and Gauging Principles and Methods, MOD) GB/T 3203-1982 Specification for Carburizing Steels of Bearings GB 7324-1994 General Purpose Lithium Lubricating Grease GB/T 7811-2007 Rolling Bearings-Symbols for Quantities (ISO 15241: 2001, IDT) 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 3573-2004 Rolling Bearings-Methods for the Measurement of Radial Internal Clearance JB/T 3574-1997 Rolling Bearings-Marking for Products JB/T 6641-2007 Rolling Bearings-Residual Magnetism and Its Assessment Method JB/T 7051-2006 Rolling Bearing Parts-Methods for the Measurement and Assessment of Surface Roughness 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 Structural Types 5 Designation Methods 5.1 Type Code 5.2 Dimension Code 5.3 Suffix Code 5.4 Designation Examples 6 Boundary Dimensions 7 Technical Requirements 7.1 Material and Heat Treatment 7.2 Tolerances 7.3 Surface Roughness 7.4 Radial Clearance 7.5 Residual Magnetism 7.6 Lubrication 7.7 Miscellaneous 8 Measurement Methods 9 Inspection Rules 10 Marking and Rustproof Packaging 10.1 Marking 10.2 Rustproof Packaging Appendix A (Normative) Boundary Dimensions of Cylindrical Roller Bearing Track Rollers for Conveying Chains