1 Scope
This standard specifies the designation method, technical requirements, test methods, inspection rules, rust prevention and packaging and the like of needle roller and cage assemblies (hereinafter referred to as "assemblies") for the crank pin and piston pin of connecting rod in motorcycle engine.
This standard is applicable to assemblies for motorcycle connecting rod, and it is also applicable to the production, inspection and acceptance of the assemblies for connecting rods of air compressors and other crank and connecting rod mechanisms. This standard is not applicable to the assemblies for connecting rods of the motorcycles for special purpose (like racing motorcycle and off-road motorcycle).
2 Normative References
The following documents contain provisions which, through reference in this standard, 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 309-2000 Rolling Bearings-Needle Rollers (neq ISO 3096: 1996)
GB/T 699-1999 Quality Carbon Structural Steels
GB/T 3077-1999 Alloy Structure Steels
GB/T 4199-2003 Rolling Bearings - Tolerances - Definitions (ISO 1132-1: 2000, MOD)
GB/T 4570-2008 Test Method of Durability for Motorcycles and Mopeds
GB/T 5374-2008 Test Method of Reliability for Motorcycles and Mopeds
GB/T 6930-2002 Rolling Bearings - Vocabulary (ISO 5593: 1997, IDT)
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
GB/T 18254-2002 High-carbon Chromium Bearing Steel
GB/T 20056-2006 Rolling Bearings-Radial Needle Roller and Cage Assemblies-Dimensions and Tolerances (ISO 3030: 1996, MOD)
GB/T 24607-2009 Rolling Bearings-Test and Assessment for Life and Reliability
GB/T 24608-2009 Inspection Rules for Rolling Bearings and Commercial Parts
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
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols (See Figure 1)
5 Designation Method
6 Boundary Dimensions
7 Technical Requirements
8 Test Methods
9 Marking
10 Inspection Rules
11 Rust Prevention and Packaging
Appendix A (Informative) Technical Requirements of Holes and Pins Matched with Assemblies
Appendix B (Informative) Examples for Selective Assembly of the Assemblies with Holes and Pins
