What bearing National Standards

305-1998 Rolling stopper groove on the outer ring GB-T and dimensions and tolerances stop

GB-T 308-2002 Ball Rolling

GB-T 309-2000 Rolling Needle

GB-T 4661-2002 Rolling Cylindrical Roller

GB-T 4662-2003 Rolling static load rating

GB-T 6391-2003 Rolling Dynamic load ratings and rating life

JB-T 3034-1993 Rolling seal rust-proof packaging

Measurement JB-T 3573-2004 Rolling radial clearance

JB-T 6639-2004 bearing parts of nitrile rubber seals skeleton technical conditions

JB-T 6641-2007 Rolling residual magnetism and Evaluation Method

JB-T 6642-2004 bearing parts roundness and waviness error measurement and evaluation methods

JB-T 7048-2002 plastic cage bearing parts

JB-T 7050-2005 Rolling cleanliness evaluation method

JB-T 7051-2006 bearing parts surface roughness measurement and evaluation methods

JB-T 7361-2007 bearing parts hardness test

JB-T 7752-2005 Rolling seal groove ball bearings technical conditions

JB-T 8196-1996 Rolling rolling the residual magnetism and Evaluation Method

JB-T 8571-1997 Rolling sealed deep groove ball bearing dust, grease leakage, temperature performance testing procedures

JB-T 8921-1999 Rolling and parts inspection rules

JB-T 10336-2002 rolling bearings and parts thereof, supplementary technical conditions

JB-T 50013-2000 rolling bearing life and reliability testing procedures

JB-T 50093-1997 rolling bearing life and reliability test evaluation method