1 Scope
This standard specifies the method to assess surface imperfections of the steel ball for the bearing.
This standard is applicable to the bearing steel ball with the dimensional range of 0.3~50mm and the tolerance grades respectively being 3, 5, 10, 16, 20, 24 and 28 as specified in GB/T 308-2002, and used for the commercial steel ball or the steel ball before bearing assembly.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties coming to an agreement based on this standard are encouraged to investigate whether the most recent editions of the standards apply. For undated references, the latest editions apply.
GB/T 308-2002 "Rolling Bearings - Steel Balls"
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 15757-2002 "Geometrical Product Specification (GPS) - Surface Imperfections - Terms, Definitions and Parameters" (eqv ISO 8785: 1998)
JB/T 8921-1999 "Rolling Bearings and Commercial Parts - Inspection Rules"
Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Inspection Rules
6 Standard Photos
