GB/T 7813-2008 in English

《GB/T 7813-2008滚动轴承 剖分立式轴承座 外形尺寸》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。
本标准规定了二螺柱和四螺柱剖分立式轴承座的外形尺寸。本标准适用于调心球轴承和调心滚子轴承，供制造厂设计和用户选型。

1 Scope

This Standard specifies boundary dimensions for two bolt plummer block housings and four bolt plummer block housings (hereafter referred to as housings)
This Standard is applicable to self-aligning ball bearings and self-aligning roller bearings for design of bearing manufacturer and type selection of user.

2 Terms and Definitions

For the purposes of this Standard, the following terms and definitions apply.
2.1 Two bolt plummer block housings
Housings with two cap bolts and two attachment bolt holes in the base.
See Figures 1 and 2.
2.2 Four bolt plummer block housings
Housings with four cap bolts and four attachment bolt holes in the base.
See Figure 3.

3 Symbols

Contents
Foreword I
1 Scope
2 Terms and Definitions
3 Symbols
4 Structures and Boundary Dimensions
Appendix A
Appendix B