... ,low noise and vibration 3,competitive price 4,excellent quality Deep Groove Ball Bearing 6318-ZZ1. Seal form: open style, Z, ZZ, ... , AISI316), ceramics8. Keeper: stainless steel, PTFE, nylon9. Bearing ferrule and ball hardness: 59 - 63HRCExplanation:6000 series 6000-6010-6020-6030 ... , but also bear certain axial load. When the bearing radial clearance increased when the function with angular contact ...