1 Scope
This standard specifies the technical requirements, measurement and test methods, inspection rules, marking, rust prevention and packaging of deep groove ball bearings (hereinafter referred to as "bearings") with the bore diameter of 3 mm ~ 120 mm for electric motors for general purposes.
This standard is applicable to the production and inspection of the 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 beatings-Tolerances – Part 2: Measuring and gauging principles and methods, MOD)
GB/T 307.3-2005 Rolling Bearings-General Technical Regulations
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 (ISO2859-1: 1999, IDT)
GB/T 781l-2007 Rolling Bearings-Symbols for Quantities (ISO 1524l: 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 2781-2005 Rolling Bearings-Miniature Ball Bearings-Specifications
JB/T 2974-2004 Rolling Bearings-Identification Code-Supplemental Regulations
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 5313-2001 Rolling Bearing-Measuring Methods for Vibration (Velocity)
JB/T 5314-2002 Rolling Bearings-Measuring Methods for Vibration (Acceleration)
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 7047-2006 Rolling Bearings-Specifications of Vibration (Acceleration) for Deep Groove Ball Bearings
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 7752-2005 Rolling Bearings-Sealed Deep Groove Ball Bearings-Specifications
JB/T 8571-2008 Rolling Bearings-Sealed Deep Groove Ball Bearings-Performance Test Rule of Dustproofing, Grease Leakage and Temperature Rise
JB/T 10187-2000 Rolling Bearings-Deep Groove Ball Bearing Vibration (Velocity)-Specifications
JB/T 10239-2001 Rolling Bearings-Specifications of Curled Shield for Deep Groove Ball Bearings
JB/T 10336-2002 Rolling Bearings and Parts-Supplementary Specifications
JB/T 10337-2002 Rolling Bearing Parts-Pressing Cage-Specifications
Contents
1 Scope
2 Normative References
3 Symbols
4 Designation Methods
5 Technical Requirements
5.1 Materials and Heat Treatment of Rings and Rolling Elements
5.2 Cage
5.3 Seal and Shield
5.4 Tolerance
5.5 Surface Roughness
5.6 Radial Internal Clearance
5.7 Fits
5.8 Cleanliness
5.9 Residual Magnetism
5.10 Lubricating and Sealing Performance
5.11 Vibration
5.12 Friction Moment
5.13 Others
6 Measurement and Test Methods
6.1 Tolerance
6.2 Surface Roughness
6.3 Radial Internal Clearance
6.4 Cleanliness
6.5 Residual Magnetism
6.6 Dust Proofing, Grease Leakage and Temperature Rise Performance
6.7 Vibration
7 Inspection Rules
7.1 Delivery Inspection
7.2 Type Inspection
8 Marking
9 Packaging
Appendix A (Normative) Fits of Bearing with Shaft and Housing Hole
Table 1 Radial Internal Clearance of Deep Groove Ball Bearings for Electric Motors
Table 2 Inspection Items
