Ceramic bearing Features: Out and inner ring: silicon nitride Ball: silicon nitride Retainer: ptfe, nylon, peek or stainless steel Full ceramic bearing is non-magnetic, non-conductive, wear and corrosion resistant. It runs smoothly without oil or grease, which means nearly no maintenance is Required during working. It is especially suitable for low and high temperature Usage. At present, full ceramic bearing has been applied in chemical, metallurgical, Food, electronic and other industry. Full ceramic bearings made with si n Have some better performance than zro, for example, Can endure higher temperature. Full ceramic bearing is not suitable for high speed operation. We produce series and uc series full ceramic bearings. We also produce full Ceramic bearings without retainer.