... 8 x 5 ceramic bearings 1,ABEC7 2,High speed 3,End cover:ZZ,RS 4,Noise level:Z1,Z2 5,C2,C0 ... ,C3... Lily bearing is a specialized manufacturer of 16 x 8 x 5 ceramic bearings. We have ... 2 types of ceramic bearing, hybrid ceramic bearing and full ceramic bearing, the hybrid ceramic bearing has steel ...