1 Scope
This standard specifies the specifications of the drawn cup needle roller bearings without inner rings for general purpose (hereinafter referred to as "bearings") that meet those specified in GB/T 290-1998 and GB/T 12764-2009.
This standard is applicable to the production, inspection and acceptance of bearings.
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 editions of the normative documents (including all the amendments) are applicable to this document.
GB/T 290-1998 Rolling Bearings - Needle Roller Bearings, Drawn Cup without Inner Rings - Boundary Dimensions
GB/T 307.2-2005 Rolling Bearings - Measuring and Gauging Principles and Methods
GB/T 1957-2006 Tolerances and General Features for Plain Limit Gauges
GB/T 4199-2003 Rolling Bearings - Tolerances - Definitions
GB/T 4340.1-2009 Metallic Materials - Vickers Hardness Test - Part 1: Test Method
GB/T 5213-2008 Cold Rolled Low Carbon Steel Sheet and Strip
GB/T 6930-2002 Rolling Bearings - Vocabulary
GB/T 7811-2007 Rolling Bearings - Symbols for Quantities
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
GB/T 12764-2009 Rolling Bearings - Needle Roller Bearings, Drawn Cup without Inner Ring - Boundary Dimensions and Tolerances
GB/T 24605-2009 Rolling Bearings-Marking for Products
GB/T 24608-2009 Inspection Rules for Rolling Bearings and Commercial Parts
JB/T 7048-2011 Rolling Bearings - Engineering Plastic Cages - Specifications
Contents
Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Technical Requirements
5.1 Material and Heat Treatment
5.2 Tolerances
5.3 Others
6 Test Methods
7 Inspection Rules
8 Marking
9 Rustproof Packaging
Appendix A (Informative) Technical Requirements for Shafts and Housing Holes Matched with Bearings
A.1 Shafts Matched with Bearings
A.2 Housing Holes Matched with Bearings
Appendix B (Informative) Recommended Installation Methods
