Oil free wear-resistant bearing is a kind of self-lubricating bearing, which is composed of four layers

The mixture of PTFE and fiber is 0.01-0.03mm, which can form a good transfer film to protect the grinding shaft and provide the self-lubricating property of the bearing. 2. The copper powder layer is 0.20-0.35mm, which has good bearing capacity and wear resistance, and good thermal conductivity can timely transfer the heat generated in the bearing operation process. The composite material can penetrate into the gap of copper powder ball and improve the bonding strength. 3. Low carbon steel provides good bearing capacity and heat transfer. 4. 0.002mm copper / tin electrodeposited layer has better corrosion resistance.