GB/T 294-2015Rolling bearings—Three-point and four-point contact ball bearings—Boundary dimensions (English PDF)

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009.

This Standard replaced GB/T 294-1994 Rolling Bearings - Three-Point and Four-Point Contact Ball Bearings - Boundary Dimensions; compared with GB/T 294-1994, this Standard has the following major technical changes besides the editorial modifications.

--- Added terms and definitions (see Chapter 3);

--- Added bearing codes (see Chapter 5);

--- Added QJF structural types, boundary dimensions of bearings in Series-10 and Series-02 (See Table 1 and Table 2);

--- Deleted the comparison between old and new bearing codes (See Appendix A of 1994 Edition).

1 Scope

This Standard specifies the boundary dimensions of three-point and four-point contact ball bearings (hereinafter referred to as "bearing") stipulated in GB/T 273.3-2015.

This Standard is applicable to the design and type-selection of the bearing.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.

GB/T 272-1993 Rolling Bearings - Identification Code

GB/T 274-2000 Rolling Bearings - Chamfer Dimension - Maximum Values

GB/T 6930-2002 Rolling Bearings - Vocabulary

JB/T 2974-2004 Rolling Bearings - Identification Code - Supplemental Regulations

3 Terms and Definitions

The terms and definitions defined in GB/T 6930-2002 are applicable to this document.

4 Symbols

The following symbols are applicable to this document.

Unless otherwise is specified, the symbols shown in Figure 1~Figure 3 and values shown in Table 1~Table 3 are nominal dimensions.

NOTE: the Figure is only structural example, the bearing doesn't have to be exactly consistent Bibliography [1] GB/T 273.3-2015 Rolling Bearings - General Plan of Boundary Dimensions - Part […]