Full complement ceramic bearing can bear very high working temperature and owns the best corrosion resistance performance.
Generally speaking, full ceramic bearing’ retainer is PTFE or PEEK. However, the PTFE or PEEK has its own properties, which restricts the use of temperature. Full complement ceramic bearing without cage avoids the limitation of the cage’s material property.
One customer uses full ceramic bearings for rotating oven (High vacuum environment). The bearing will be at about 350°C. The rotating speed is very low and loads are very small.
Considering these specific requirements, the full complement Zirconia ceramic bearing 6009 (ZrO2 races+ZrO2 balls, without cage) is the best choice. Zirconia ceramic can bear the high temperature up to 400°C. It can totally satisfy our customer’s specification.