... conditions of the bearing 2.The self-lubricating properties of carbon graphite and graphite materials, along with stability at elevated ... use normal lubricant material to improve the durability. 4.Therefore, carbon and graphite bearings, pistions, piston rings and sealing rings ... high speed(like 100m/s) without lubricating oil.Changsha Aobo Carbon Co.,LtdWebsite: http://www.csabc.cn/ http://csabc.en. ...