1 Scope
This standard specifies the technical requirements, measurement methods, inspection rules, marking and packaging of cast housings for insert bearings.
This standard is applicable to the cast housings whose boundary dimensions meeting the requirements of GB/T 7809 and JB/T 5302.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 275-1993 Shaft and Housing Fits for Rolling Bearings
GB/T 1184-1996 Geometrical Tolerancing-Geometrical Tolerance for Features without Individual Tolerance Indications (eqv ISO 2768-2: 1989)
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 (ISO 2859-1: 1999, IDT)
GB/T 4199-2003 Rolling bearings-Tolerances-Definitions (IS0 1132-1: 2000，Rolling bearings-Tolerances-Part1: Terms and definitions, MOD)
GB/T 6930-2002 Rolling Bearings-Vocabulary (ISO 5593: 1997, IDT)
GB/T 7809-1995 Rolling Bearings- Housings for Insert Bearing-Boundary Dimensions(eqv ISO 3228: 1993)
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
GB/T 9439-1988 Grey Iron Castings
JB/T 5302-2002 Housings for Insert Bearings-Supplementary Structure-Boundary Dimensions
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
4.1 Plummer Block Housing
4.2 Flanged Housing
4.3 Take-up Housing
4.4 Annular Housing
5 Technical Requirements
5.1 Materials
5.2 Tolerance
5.3 Surface Roughness
5.4 Requirements for Casting
5.5 Others
6 Measurement Methods
7 Inspection Rules
8 Marking
9 Packaging, Storage and Transportation
Appendix A (Normative) Measurement Methods
A.1 Measurement of Tolerance
A.2 Measurement of Surface Roughness
