Full ceramic bearing, the rings and balls made by full ceramic material: Si3N4, as a standard constructure, the cage made by PTFE, generally the cage is made with GFRPA66-25, PEEK, PI, Phonemic Textiles Tube, etc. Compares than the material of ZrO2, The SiN4 ceramics bearings could endure heavier load and could be used in higher temperature environment. The manufactured clearance from P4 TO UP grade
