We make Hybrid Ceramic bearing have excellence performance, They are bearing rings is made of chrome steel or stainless steel, ball is made of ceramic Si3N4, or ZrO2   contact to Supplier: Suzhou (China) SLZ Machinery Co Ltd please visit webpage: http://www.bearingsworld.com/right_ceramicbearing.htm  contact email: sales@bearingsworld.com  ; office@bearingsworld.com MSN Code: order@bearingsworld.com Tel : 0086 (0)512 65213180 / 6115 5723