GB/T 307.4-2002 in English

《GB/T 307.4-2002滚动轴承 推力轴承 公差》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。
GB/T 307的本部分规定了符合GB/T 273.2-1998的平底推力轴承的外形尺寸（倒角除外）公差和旋转精度公差。本部分不适用于某些推力轴承（如推力滚针轴承）；也不适用于特殊应用场合下使用的推力轴承（如特殊精度轴承）。推力轴承的倒角尺寸最大值规定在GB/T 274-2000中。

1 Scope

This Part of GB/T 307 specifies tolerances for boundary dimensions (except chamfer dimensions) and for running accuracy of thrust rolling bearings with flat back faces specified in GB/T 273.2-1998.
This Part does not apply to certain thrust bearings, e.g. needle roller bearings, or for particular fields of application, e.g. special precision bearings.
Chamfer dimension limits are given in GB/T 274-2000.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this Part of GB/T 307. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.