Because carbon graphite material having a series of wear-resistant parts for the manufacture of unique properties, it is also widely used for the manufacture of bearings under special working conditions using carbon graphite bearings are widely used in the operation is not permitted when the bearing grease lubricants place. For example, food and beverage, textile, chemical and other industrial sectors in the transport, paper industry, drying machines, textile industry, cloth dryer, man-made fiber textile machines and cigarette manufacturing equipment and submersible pumps and motors, etc. of the bearings, These places with grease lubricants inevitably cause pollution, they have been banned. The self-lubricating properties of carbon graphite bearing strong, without the use of lubricants and long-term operation. In the selection of carbon graphite bearing time, but also take into account bearing . The operating temperature of this temperature is constituted by two factors: first, because the temperature of the medium surrounding the bearing. First, due to the frictional heat generated in the bearing friction surface. As we all know, a variety of materials carbon graphite bearing, allowing the use of different temperatures. Therefore, the operating temperature must be based on the situation, select the appropriate material bearing when the bearing is immersed in the liquid or liquid splashing down (wet running), which greatly reducing friction and wear. Coupled with the liquid can help to escape the heat generated by friction, thus greatly improving the carbon graphite bearing allowable PV value. Indeed, in this case, which allows the PV value may be more dry running time 1000 times higher. Q2768 Jiu Jiu 8659 135 000 03025 Electric