... condition. The rings and balls made by full ceramic material: Si3N4 or ZrO2, as a standard constructure,the cage made by PTFE, generally we ... , Applicable bearing category: 1) Ceramic deep groove ball bearings, 2) Ceramic Angular contact ball bearings, 3) Ceramic Thrust ball bearings, 4) Ceramic Self-aligning ball bearings, 5) Ceramic insert bearings ...