Standard No.:	JB/T 10859-2008
Chinese Name:	滚动轴承 汽车发动机张紧轮和惰轮 轴承及其单
English Name:	Rolling bearings—Tensioner and idler bearings and units for automotive engine
Professional Classification:	J11 Rolling bearing
Professional Classification:	JB Professional Standard - Machinery
ICS Classification:	21.100.20 Rolling bearings
Issued by:
Issued on:	2008-03-12
Implemented on:	2008-09-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	6500 words
Price(USD):	(USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the definitions, designation method, structural type, technical requirements, inspection rules and test methods of tensioner and idler bearings for automotive engine (hereinafter referred to as bearings) and of tensioner and idler units (hereinafter referred to as units).
This standard is applicable to the production and inspection of bearing manufacturers and the 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 307.1-2005 Rolling Bearings-Radial Bearings-Tolerances (ISO 492: 2002, MOD)
GB/T 307.2-2005 Rolling Bearings-Measuring and Gauging Principles and Methods (ISO 1132-2: 2001, Rolling bearings-Tolerances-Part 2: 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 (ISO 3290: 1998, NEQ)
GB/T 2829-2002 Sampling Procedures and Tables for Periodic Inspection by Attributes (Apply to Inspection of Process Stability)
GB/T 3203-1982 Specification for Carburizing Steels of Bearings
GB/T 4604-2006 Rolling Bearings-Radial Internal Clearance(ISO 5753: 1991, MOD)
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
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 3573-2004 Rolling Bearings-Methods for the Measurement of Radial Internal Clearance
JB/T 3574-1997 Rolling Bearings-Marking for Products
JB/T 5313-2001 Rolling Bearing-Measuring Methods for Vibration（Velocity）
JB/T 5314-2002 Rolling bearing-Measuring Methods for Vibration (Acceleration)
JB/T 6639-2004 Rolling Bearing Parts-Skeleton Acrylonitrile-buta-diene Copolymers Seal-Specifications
JB/T 6641-2007 Rolling Bearings-Residual Magnetism and Its Assessment Method
JB/T 7047-2006 Rolling Bearings-Specifications of Vibration (Acceleration) for Deep Groove Ball Bearings
JB/T 7048-2002 Rolling Bearing Parts-Plastic Cage-Specifications
JB/T 7050-2005 Rolling Bearings-Assessment Methods for Cleanliness
JB/T 7051-2006 Rolling Bearing Parts-Methods for the Measurement and Assessment of Surface Roughness
JB/T 7752-2005 Rolling Bearings-Sealed Deep Groove Ball Bearings-Specifications
JB/T 8571-2008 Rolling Bearings-Sealed Deep Groove Ball Bearings-Performance Test Rule of Dustproofing, Grease Leakage and Temperature Rise
JB/T 8881-2001 Specifications for Carburizing Heat Treatment of Rolling Bearing Parts
JB/T 8921-1999 Rolling Bearings and Commercial Parts-Inspection Rules
JB/T 10187-2000 Rolling Bearings - Deep Groove Ball Bearing Vibration (Velocity)-Specifications
JB/T 10336-2002 Rolling Bearings and Parts-Supplementary Specifications
JB/T 10337-2002 Rolling Bearing Parts-Pressing Cage-Specifications