Dynamic conditions of high speed radial for centrifugal compressors often necessitae to use of tilting pad journal bearings and thrust bearings technology.Design features such as damping ,stiffness and directed lubrication and Cr-Cu alloy pad materials are key aspects for enhance the machine performance,like reduce vibration and temperature rising.Screw compressor has high radial and thrust load,low speed, normally,use combined radial and thrust pad bearings.