The outer layer of the self-lubricating spherical plain bearing is a steel sleeve, which can be quenched to improve the bearing capacity The inner ball is combined with the wear resistance of Copper Alloy (ZCuZn24Al6, SAE430B and the self-lubricating property of solid lubricant. We designed it with an external oil tank, so it can be easily refueled, if used in the case can greatly improve the product life, so products are widely used in high-load, intermittent or swing movement, such as steam locomotive production lines, water turbines, reservoir work / accident doors, plastic machinery, etc. . Various types of copper alloys can be supplied according to the service conditions.