... ZrO2 2.6801,6802,6803,6805,6805,6806 6901,6902,6903,6904,6905,6906 Type : ceramic ball bearing / full ceramic bearing/hybrid ceramic ... S91746800ZZ2RS101ZrO2 2)Quality certificate: ... components, pumps,machinery. Full Ceramic Bearings 688 Si3N4 ZrO2