Classification of ceramic ball bearings:

According to material: ceramic bearings can be divided into zirconia ceramic bearings, silicon nitride ceramic bearings, composite ceramic material bearings.

According to the structure: ceramic bearings can be divided into: zirconia belt retainer ceramic bearings, silicon nitride belt retainer ceramic bearings, composite belt retainer ceramic bearings. General ceramic bearing keeping materials to polytetrafluoron (PTFE) as a standard configuration, can also be used glass fiber reinforced nylon 66 (GRPA66-25), special engineering plastics (PEEK, PI), stainless steel (SUS316, SUS304), brass (Cu), etc. Ceramic retainers are rarely used because of the difficulties of hole processing and forming technology. Due to the material limitation of the retainer, zirconia full ball full ceramic bearings, silicon nitride full ball full ceramic bearings and composite full ball ceramic bearings are developed for special use occasions without retainer.

According to the integrity of the material: the inner and outer rings and rolling bodies of the main components of the ceramic bearing mentioned above are mostly made of ceramic materials, which are defined as ceramic bearings; If part of the inner and outer ring and rolling body of the bearing is not made of ceramic material, we define it as a mixed ceramic bearing. The most widely used mixed ceramic bearing is the ball using ceramic material called ceramic ball bearing, which can be divided into zirconia ceramic ball bearing and silicon nitride ceramic ball bearing.