... are four parts of a bearing, they are:1,Inner and outer of rings (the materials are GCr15)2,Cage( ... series,32300 series.MaterialsCarbon steel,Stainless steel,Chrome Steel and Bearing steel,GCr-15Seals typeOpenPrecision rating P0Vibration LevelV1Tolerance ... , motorcycle, automobile,sports equipment, textile machinery, agriculture machinery and children toys etc. Add:Wanshan Industrial Zone in Guanxian, ...