Graphite bearing is commonly used in industrial machinery such as lubricant parts. A bearing is the sliding parts which is commonly used in industrial machinery, materials such as metal, nonmetal and composite materials. graphite bearing is the carbon material with the performance requirements of mechanical equipment. different with metal bearing, graphite bearing has the superior properties such as self-lubricating, qualitative light, high temperature resistant, corrosion resistance etc. Graphite bearing has excellent self-lubrication, good resistance to chemical corrosion, high thermal conductivity and thermal stability, good wear-resistance ,and enough mechanical strength etc. they are widely used in kinds of mechanical equipment include the centrifugal pump, submersible pump, liquid ammonia pump and instruments of all kinds of bearings.