It is developed in order to deal with such conditions as ,high- low temp and unlubrication in national industry, well combination of new materials, craft and structure. Usually Si3N4 and ZrO2.SiC are good selecting materials. And it is used in civilian use fields and well covers a lot of fields in which steel bearing of current precision and middle speed above can. This kind of bearing has much better performance and price than steel bearings. Its lifetime is increase 3 times for current bearing. That can save much maintenance time, bring down defective index and reduce stock. Those whoseout diameter is less than 250mm are available. Continuous improvement, pursuit of excellence is our company's guidelines! As long as customers have item number, drawings, samples, or bearing dimensions, SFE will provide you satisfying products and service.