GB/T 292-2023Rolling bearings—Angular contact ball bearings—Boundary dimensions (English PDF)

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

This document replaces GB/T 292-2007 "Outline Dimensions of Rolling Bearings Angular Contact Ball Bearings" and is consistent with GB/T 292-2007 In addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) Added "Terms and Definitions", "Structural Type" and "Code" (see Chapter 3, Chapter 5 and Chapter 6);

b) The outer dimensions of the locking inner and outer ring type and locking outer ring type angular contact ball bearings of the 18 series when the contact angle is 25° are added (see Table 1);

c) Expanded the size range of locking inner and outer ring type and locking outer ring type angular contact ball bearings (see Table 1 ~ Table 5,:2007 edition Table 1 ~ Table 5);

d) Added the outer dimensions of 19 series locking inner ring angular contact ball bearings with contact angles of 15° and 25° (see Table 6);

e) Expanded the size range of 10 series and 02 series locking inner ring type angular contact ball bearings when the contact angle is 15° and 25° (see Table 7, Table 8, Table 6 and Table 7 of the:2007 version);

f) Added the outer dimensions of the 03 series locking inner ring type angular contact ball bearings with contact angles of 15°, 25° and 40° (see Table 9):

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

This document is proposed by China Machinery Industry Federation:

This document is under the jurisdiction of the National Rolling Bearing Standardization Technical Committee (SAC/TC98):

This document was drafted by: Luoyang Bearing Research Institute Co:, Ltd:, Suzhou Great Wall Precision Technology Co:, Ltd:, Wafangdian Bearing Group Co:, Ltd:

Limited liability company, Bahuan Technology Group Co:, Ltd:, Zhejiang Wuzhou Xinchun Group Co:, Ltd:, Shandong Lanyu Precision Bearing Manufacturing Co:, Ltd:

Co:, Ltd:, Linqing Haibin Bearing Manufacturing Co:, Ltd:

The main drafters of this document: Ma Xiaomei, Shen Zhongming, Yu Changxin, Wen Xuming, Yin Liangliang, Lin Guangfu, and Yan Mingshan:

The previous versions of this document and the documents it replaces are as follows:

— First issued as GB 292-1964 in 1964, first revised in 1983;

— In the second revision in:1994, GB 293-1984 "Outline Dimensions of Angular Contact Ball Bearings with Lock on the Inner Ring" was incorporated (The previous versions of GB 293-1984 are: GB 293-1964), GB 295-1983 "Paired installation of radial bearings" The contents of "Outline Dimensions of Angular Contact Ball Bearings" (the previous versions of GB 295-1983 are: GB 295-1964);

— The third revision in:2007;

— This is the fourth revision:

Rolling bearing angular contact ball bearing dimensions

1 Scope

This document specifies the overall dimensions of non-separable single row angular contact ball bearings that comply with GB/T 273:3-2020:

This document is applicable to the design and user selection of angular contact ball bearings (hereinafter referred to as bearings) with nominal contact angles of 15°, 25°, and 40°: That For the external dimensions of single row angular contact ball bearings and separated single row angular contact ball bearings with nominal contact angles (10°<=alpha<=45°), please refer to this document: Provisions:

2 Normative reference documents

GB/T 272-2017

GB/T 274-2023

GB/T 6930

GB/T 7811-2015

3 Terms and definitions

The terms and definitions defined in GB/T 6930 apply to this document:

4 Symbols

The symbols given in GB/T 7811-2015 and the following are applicable to this document:

Unless otherwise stated, the symbols shown in Figures 1 to 3 and the values shown in Tables 1 to 9 represent nominal dimensions: B: Bearing width D: Bearing outer diameter d: Bearing inner diameter r: Bearing chamfer size r1: chamfer size of the front (non-thrust end) of the bearing ring rsmin: Minimum single chamfer size of r r1smin:minimum single chamfer size of r1 alpha: Bearing contact angle

5 Structural type

The structural diagram of the bearing is shown in Figure 1 to Figure 3: There may be sealing rings or dust covers at both ends: