The metal composite self-lubricating material is made of high-quality low-carbon steel as the substrate, the spherical porous copper powder layer is sintered in the middle, and the surface wear layer is made of PTFE-based wear-resistant lubricating material. The material has excellent mechanical load-bearing capacity and intermediate copper. The powder layer can not only transmit the heat generated during the operation of the bearing, but also improve the bonding strength between the plastic layer and the substrate. The PTFE design is designed for complete dry friction and has been developed with a variety of materials based on lubrication, friction coefficient and durability requirements. Hengxing's PTFE metal composites provide the best performance over the widest range of loads, speeds and temperatures with or without external lubrication.