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GB/T 294-2015 English PDF (GBT294-2015)

GB/T 294-2015 English PDF (GBT294-2015)

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GB/T 294-2015: Rolling bearings -- Three-point and four-point contact ball bearings -- Boundary dimensions

This Standard specifies the boundary dimensions of three-point and four-point contact ball bearings stipulated in GB/T 273.3-2015. This Standard is applicable to the design and type-selection of the bearing.
GB/T 294-2015
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 21.100.20
J 11
Replacing GB/T 294-1994
Rolling Bearings ?€? Three-Point and Four-Point
Contact Ball Bearings ?€? Boundary Dimensions
ISSUED ON. FEBRUARY 4, 2015
IMPLEMENTED ON. OCTOBER 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Symbols ... 4
5 Codes ... 5
6 Mark Examples ... 5
7 Boundary Dimensions ... 5
Bibliography ... 11
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).
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee for Standardization of Rolling Bearings (SAC/TC 98).
Drafting organizations of this Standard. Luoyang Bearing Research Institute Co., Ltd., Zhongshan Yingke Bearing Manufacturing Co., Ltd., Ningbo Cixing Bearing Co., Ltd., and Shandong Yujie Bearing Manufacturing Co., Ltd.
Chief drafting staffs of this Standard. Guo Baoxia, Pang Jianlin, Zhao Kun, Cai Meigui, and Li Jiemei.
The historical editions replaced by this Standard are as follows.
--- GB 294-1964, GB 294-1983, GB/T 294-1994.
Rolling Bearings ?€? Three-Point and Four-Point
Contact Ball Bearings ?€? Boundary Dimensions
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 3. Radial Bearings

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