Self-lubricating composite bearing materials and their products are in accordance with the modern sliding bearing friction theory, with metal, plastic, solid lubricant using a special technical process composite manufacturing. This kind of self-lubricating composite bearing material has the characteristics of high mechanical strength, anti-friction and self-lubricating and good wear resistance, strong carrying capacity and wide adaptability composite bearing, which can meet the requirements of most working conditions in mechanical engineering. As a new generation of rolling bearings and sliding bearings to replace the use of products. Especially in the case of poor lubrication conditions such as boundary lubrication, no oil dry friction, can greatly improve the reliability of the machine and the service life, and can reduce the machine noise and reduce maintenance costs. At the same time, such self-lubricating bearings also have a good performance and low cost, so in the modern mechanical engineering has been more and more applications.