... medical devices, motorbikes, textile machines, autos and other areas.Deep Groove Ball Bearing are the most common bearing typeDeep groove ... ) Model: Open, Z, ZZ, RZ,2RZ,RS, 2RS 2) Quality level: reach the same level as the Japanese and ... :Classes 0,Classes 6,Classes 5,Classes 4,Class 2.AII of them are equivalent to ISO standard.The ... Same 5 2.5 1.5 as the 6 3 1.5 Matched 8 4 2 inner ring Deep Groove Ball ...