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    2. 中文版 English
      INDUSTRY
      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

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