... Open type, seal rings, shields can be provided.Retainer: NYLON, PTFE, PEEK, steel, bronze, or full complements.Non-standard ... bearing can be designed and provided upon requirement.Features:Compared with traditional metal bearing, full ceramic bearing ... can produce two kinds of ceramic bearings: ZrO2 ceramic bearings and Si3N4 ceramic bearings.In the ceramic bearings produce deep ditch ...