... awful environment and special condition. 2) The rings and balls made of full ceramic material: ZrO2, SisN4 ... and Sic as a standar structure, the cage made of PTFE, GFRPA66-25, PEEK, PI, AISI ... balls: all kinds of ceramic balls with the precision from G5 to G200,made of the material ZrO2, SiN4 ... ,gear,Thrust bearing,ball bearing,roller bearing Number of Employees:11 - 50 People Trade & MarketMain ...