1 Scope
This standard specifies the designation method, boundary dimensions and specification of 560000 type and KOW-560000 type angular contact thrust ball bearings (hereinafter referred to as "bearings") for steering-gear for automobiles, tractors and engineering vehicles.
This standard is applicable to the production and inspection of bearing manufacturer and customer acceptance.
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 correction 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 272-1993 Rolling Bearing-Identification Code
GB/T 307.2-2005 Rolling Bearings-Measuring and Gauging Principles and Methods (ISO 1132-2: 2001.Rolling bearings-Tolerances-Part2: Measuring and gauging principles and methods, MOD)
GB/T 307.3-2005 Rolling Bearings--General Technical Regulations
GB/T 308-2002 Rolling Bearings-Steel Balls
GB/T 4199-2003 Rolling bearings-Tolerances-Definitions(ISO 1 132-1: 2001, Rolling bearings-Tolerances-Part1: Terms and definitions, MOD)
GB/T 7811-2007 Rolling Bearings-Symbols for Quantities (ISO 15241: 2001, IDT)
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
GB/T 13237-1991 Cold-rolled Quality Carbon Structural Steel Sheets and Strips (neq FOCT 16523: 1970)
GB/T 18254-2002 High-carbon Chromium Bearing Steel
JB/T 1255-2001 Specification for Heat-treatment of Rolling Bearing Parts Made from High Carbon Chromium Steel
JB/T 2974-2004 Rolling Bearings-Identification Code-Supplemental Regulations
JB/T 3574-1997 Rolling Bearings-Marking for Products
JB/T 6641-2007 Rolling Bearings-Residual Magnetism and Its Assessment Method
JB/T 7048-2002 Rolling Bearings-Engineering Plastic Cages-Specifications
JB/T 892l-1999 Rolling Bearings and Commercial Parts-Inspection Rules
JB/T 10337-2002 Rolling Bearing Parts-Pressing Cage-Specifications
QC/T 29096-1996 Steering Gear Test Methods
Contents
Foreword I
1 Scope
2 Normative References
3 Symbols
4 Designation Methods
5 Marking Example
6 Boundary Dimensions
7 Technical Requirements
8 Test Methods
9 Inspection Rules
10 Marking, Rust Prevention and Packaging
Appendix A (Informative) Bearing Boundary Dimensions
Appendix B (Normative) Measurement Methods of Bearing Friction Moment and its Fluctuating Value
B.1 Bearing Friction Moment and its Fluctuating Value
B.2 Measurement Methods
Appendix C (Normative) Measurement Methods for the Radial Displacement of Assembled Bearing Cage
Appendix D (Informative) Comparison of New and Old Bearing Types
Figure 1 560000 Type
Figure 2 KOW-560000 Type
Table 1 Shaft Washer
Table 2 Housing Washer
Table 3 Radial Displacement
Table 4 Sampling Inspection Items for Finished Bearing
