GB/T 309-2000 in English

1 Scope

This Standard specifies the dimensions, technical requirements, measuring and testing methods, inspection rules, marking and packaging of needle rollers.
This Standard is applicable to the accessorial needle rollers and commercial needle rollers of rolling bearings.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB/T 1800.3-1998 Limits and Fits — Bases — Part 3: Numerical Values Tables of Standard Tolerances and Fundamental Deviations (eqv ISO 286-1:1988)
GB/T 4380-1984 Assessment of Departure from Roundness — Two and Three Point Methods
GB/T 6930-1986 Rolling Bearings — Vocabulary (eqv ISO 5593-1984)
JB/T 1255-1991 Specification for Heat-treatment of Rolling Bearing Parts Made from High Carbon Chromium Steel
JB/T 3034-1993 Rolling Bearings — Oil Seal Rust Prevention Packing
JB/T 6642-1993 Rolling Bearings Parts — Methods for the Measurement and Assessment of Departure from Roundness
JB/T 7051-1993 Rolling Bearings Parts — Methods for the Measurement and Assessment of Surface Roughness
JB/T 7361-1994 Rolling Bearings — Test Method for Hardness of Parts
JB/T 8196-1996 Rolling Bearings — Residual Magnetism and Its Assessment Method
JB/T 8921-1999 Rolling Bearings and Commercial Parts — Inspection Rules

Contents
Foreword I
1 Scope
2 Normative References
3 Terms, Symbols and Definitions (see Figures 1 and 2)
4 Dimensions
5 Technical Requirements
6 Marking
7 Measuring and Testing Methods
8 Inspection Rules
9 Packaging
Appendix A