GB/T 296-2015 English PDF (GBT296-2015)

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GB/T 296-2015: Rolling bearings -- Double row angular contact ball bearings -- Boundary dimensions
GB/T 296-2015
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 21.100.20
J 11
Replacing GB/T 296-1994
Rolling bearings - Double row angular contact
ball bearings - Boundary dimensions
滚动轴承 双列角接触球轴承外形尺寸
ISSUED ON. FEBRUARY 4, 2015
IMPLEMENTED ON. OCTOBER 1, 2015
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Symbols... 5 
5 Structure types ... 6 
6 Codes ... 8 
7 Marking example ... 8 
8 Boundary dimensions ... 8 
Bibliography ... 10 
Foreword
This Standard was drafted in accordance with the rules given in GB/T
1.1-2009.
This Standard replaces GB/T 296-1994 Rolling bearings - Double row angular
contact ball bearings - Boundary dimensions. Compared with GB/T 296-1994,
the main technical changes are as follows.
- modified the scope (see Clause 1 of this Edition, Clause 1 of Edition
1994);
- added and modified some normative references (see Clause 2 of this
Edition, Clause 2 of Edition 1994);
- added “terms and definitions” “structure type” and “codes” (see Clause
3, Clause 5 and Clause 6 of this Edition);
- modified the name of “double row angular contact ball bearings with ball
gap” to “double row angular contact ball bearings with filling slot” (see
Clause 5 of this Edition, Clause 3 of Edition 1994);
- deleted double row angular contact ball bearing structure type of one
side with a dust cover and one side with a ring as well as its schematic
diagram (see Figure 3, Figure 5 of Edition 1994);
- added the specification of the maximum chamfer size (see Table 1,
Table 2 of this Edition);
- deleted the code of double row angular contact ball bearing structure
type of one side with a dust cover and one side with a ring as well as its
boundary dimensions (see Table 1, Table 2 of this Edition);
- modified bearing size range (see Table 1, Table 2 of this Edition, Table 1,
Table 2 of Edition 1994);
- deleted the code of 40 series double inner ring double row angular
contact ball bearings as well as its boundary dimensions (see Table 3 of
Edition 1994);
- deleted Annex “Comparison on new and old bearing codes” (see Annex
A of Edition 1994).
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee
on Rolling Bearings of Standardization Administration of China (SAC/TC 98).
Rolling bearings - Double row angular contact
ball bearings - Boundary dimensions
1 Scope
This Standard specifies the boundary dimensions of double row angular
contact ball bearings, double row angular contact ball bearings with filling slot,
double row angular contact ball bearings with dust covers at both sides,
double row angular contact ball bearings with seal rings at both sides, double
inner ring double row angular contact ball bearings (hereinafter referred to as
“bearings”) which are in accordance with GB/T 273.3-2015.
This Standard is applicable to bearing design and selection.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including
any amendments) applies.
GB/T 272-1993, Rolling bearing - Identification code
GB/T 274-2000, Rolling bearings - Chamfer dimension - Maximum values
GB/T 6930-2002, Rolling bearings - Vocabulary
GB/T 7811-2007, Rolling bearings - Symbols for quantities
JB/T 2974-2004, Rolling bearings - Identification code - Supplemental
regulations
3 Terms and definitions
The terms and definitions specified in GB/T 6930-2002 apply to this Standard.
4 Symbols
The symbols given in GB/T 7811-2007 as well as the following ones apply to
this document.