Standard No.:	JB/T 8878-2011
English Name:	Rolling bearings. Drawn cup needle roller bearings. Specifications
Chinese Name:	滚动轴承 冲压外圈滚针轴承 技术条件
Chinese Classification:	J11    Rolling bearing
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Issued by:	MIIT
Issued on:	2011-12-20
Implemented on:	2012-4-1
Status:	valid
Superseding:	JB/T 8878-2001 Rolling bearings ― Drawn up needle roller bearings ― Specifications
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	40.0
Delivery:	via email in 1 business day

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