GB/T 27560-2011 in English

《GB/T 27560-2011滚动轴承 外球面球轴承铸造座 技术条件》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。

1 Scope

This standard specifies the technical requirements, measurement methods, inspection rules, marking and packaging of cast housings for insert bearings (hereinafter referred to as "cast housings").
This standard is applicable to the production, inspection and acceptance of cast housings whose boundary dimensions meet those specified in GB/T 7809-1995 and JB/T 5302-2002.

2 Normative References

The following documents are indispensable for the application of this document. For dated references, only the dated edition is applicable to this document. For undated references, the latest edition (including all the amendments) applies.
GB/T 275-1993 Shaft and Housing Fits for Rolling Bearings
GB/T 1184-1996 Geometrical Tolerancing - Geometrical Tolerances for Features without individual Tolerance Indications
GB/T 2828.1-2003 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 4199-2003 Rolling Bearings - Tolerances - Definitions
GB/T 6930-2002 Rolling Bearings - Vocabulary
GB/T 7809-1995 Rolling bearings - Housings for Insert Bearing - Boundary Dimensions
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
GB/T 9439-2010 Grey Iron Castings
JB/T 5302-2002 Housings for Insert Bearings - Supplementary Structure - Boundary Dimensions
ISO 3228: 1993 Rolling Bearings - Cast and Pressed Housings for Insert Bearings

Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Technical Requirements
6 Measurement Methods
7 Inspection Rules
8 Marking
9 Packaging, Storage and Transportation