Whether KOYO bearing damage criteria - bearing knowledge

Whether can be used to determine, is considering KOYO bearing damage degree, mechanical properties, importance, and operating conditions, to the next overhaul period. However, if you have the following defects can't use, must be replaced new KOYO bearings: ( 1) Inner ring and outer ring, rolling element and cage have crack or gap on any one; ( 2) On any one ring, rolling body fracture; ( 3) Raceway surface, guard, with significant roller card injury; ( 4) Maintains a significant wear and tear, or rivet significant relaxation; ( 5) Raceway surface, there are rust on rolling element and injury; ( 6) On the raceway surface, rolling body has serious indentation and mark; ( 7) Inner ring diameter or outer diameter surface has obvious creep; ( 8) Discoloration caused by thermal obvious; ( 9) The KOYO bearing grease sealed, sealing ring or dust cover breakage is obvious.