PEEK bearing,PP bearing, PTFE bearing, UPE bearing,POM bearing1.). Bearing ring: PEEK 2). Ball: ceramic ZrO2 ball material 3). cage: PEEK materialthe temperature will attainability -40~260 centi-grade Kove Bearing widely used in assembling of semiconductor, plating machinery, PCB machinery , Petrol, Chemical, Electrical, Food, Medical, Marine, Aerial industry, It can be used in extreme badly environment and special situation.