The material of water lubricated bearings has a great effect on its friction and wear properties.In order to select the bearing material reasonably,three common materials of water lubricated bearing,ultra high molecular weight polyethylene(UHMWPE),polytetrafluoroethylene(PTFE) and nitrile butadiene rubber(NBR),were selected,and their friction and wear properties as water lubricated stern bearing were tested on CBZ1 friction wear testing machine of ship shafting under different speeds and pressure.The configuration of surfaces of the specimens was tested to analyze the wear mechanism.The results show that under lower speed condition,the water lubrication properties of UHMWPE and PTFE are similar to each other and better than that of NBR.Under high speed condition,the tribological properties of UHMWPE are better than that of PTFE and NBR.However,the working stability of NBR is better than that of UHMWPE and PTFE.