1 Scope
This standard specifies the structural type, designation method, boundary dimensions, technical requirements, test methods, inspection principals, marking and rust proof packaging of the cylindrical roller bearings (hereafter referred to as “bearings”) for spindles of machines whose boundary dimensions meet GB/T 283-2007 or GB/T 285-1994 and tolerance class is Class 5, Class 4, Class 2, Class SP or Class UP.
This standard is applicable to the production, inspection and acceptance of bearings.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the dated edition applies. For undated reference, the latest edition of the normative document (including any amendments) applies.
GB/T 272-1993 Rolling Bearing-Identification Code
GB/T 274-2000 Rolling Bearings-Chamfer Dimension-Maximum Values
GB/T 283-2007 Rolling Bearings - Cylindrical Roller Bearings - Boundary Dimensions
GB/T 285-1994 Rolling Bearings - Double Row Cylindrical Roller Bearings - Boundary Dimensions
GB/T 307.2-2005 Rolling Bearings - Measuring and Gauging Principles and Methods
GB/T 1176-1987 Specification for Cast Copper Alloys
GB/T 2828.1-2003 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 4199-2003 Rolling Bearings - Tolerances - Definitions
GB/T 6930-2002 Rolling Bearings - Vocabulary
GB/T 7811-2007 Rolling Bearings - Symbols for Quantities
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
GB/T 18254-2002 High-carbon Chromium Bearing Steel
GB/T 24605-2009 Rolling Bearings-Marking for Products
GB/T 24610.4-2009 Rolling Bearings - Measuring Methods for Vibration - Part 4: Radial Cylindrical Roller Bearings with Cylindrical Bore and Outside Surface
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 6641-2007 Rolling Bearings - Residual Magnetism and Its Assessment Method
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 8922-2011 Rolling Bearings - Specifications for Vibration (Velocity) of Cylindrical Roller Bearings
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Designation Methods
6 Structural Types and Boundary Dimensions
7 Technical Requirements
8 Test Methods
9 Inspection Rules
10 Marking
11 Rust Proof Packaging
Appendix A (Informative) Working Surface Roughness of Inner Ring
