Abstract:In order to research the lubricant performance of steam turbine bearing,a bearing performance test rig was designed,and the test specification was developed.Based on modern measurement & controlling technical system,the test rig can be used to simulate steam turbine bearing working conditions,and the test parameters can be monitored online,including motor speed,loading,surface temperature of bearing,flow and pressure of lubricant oil.Combining with the chemical analysis and bearing surface determination,the test rig can also be used to determine the lubricant performance of the lubricating oils such as oxidation durability,anticorrosion,antiwear,it provides experimental conditions for performance research of steam turbine bearing and lubricating oils.