GB/T 25772-2010 in English

《GB/T 25772-2010滚动轴承 铁路客车轴承》由TC98（全国滚动轴承标准化技术委员会）归口，主管部门为中国机械工业联合会。

1 Scope

This standard specifies the designation method, structural type, boundary dimensions, technical requirements, test method, inspection rules, marking, rustproof packaging and storage of the rolling bearings (hereinafter referred to as "bearings") used for railway passenger coach.
This standard is applicable to the bearings used under the conditions that the speed per hour is not greater than 160 km/h, for the production, inspection and acceptance of bearings.

2 Normative References

The following normative documents contain provisions which, through reference in this text, 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, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.

Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Designation Methods
6 Structural Types
7 Boundary Dimensions
8 Technical Requirements
9 Test Methods
10 Inspection Rules
11 Marking
12 Rustproof Packaging
Appendix A (Normative) Assessment Methods for Cleanliness