... 350 types, including metric and inch deep groove ball bearing, self-aligning bearing, angular contact bearing, plain bearing, and spherical ... bearing. Open type, seal rings, shields can be provided.Retainer: NYLON, PTFE, PEEK, steel, bronze, or full complements.Non-standard ... .5. Could work under poor lubrication, because ceramics are self-lubrication. Full ceramic bearing could be used at high-vacuum ...