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The base of the oil-free self-lubricating bearing should be based on the working conditions of the bearing itself. More commonly used materials are high-strength brass, tin bronze, castings, etc.! According to the working conditions of the bearing itself, through the combination of different metal matrix and embedded solid lubricant, the products can meet the special needs of various temperature, load, movement and medium working conditions, while ensuring stable and reliable work. It is in the bearing base metal friction surface out of the appropriate size, arranged in order of the hole, and then embedded in the hole with a unique self-lubricating properties of the solid lubricant made of self-lubricating bearings. The bearing combines the metal matrix and the special formula of the respective advantages of lubricating materials, breaking through the general bearing lubrication by the limitations of the oil film. The products are widely used in metallurgy rolling equipment, filling equipment, water turbine, gas turbine, instrument and mining machinery, ship machinery, textile machinery, shipbuilding industry, aerospace and other fields, but also more and more widely used in other industrial and agricultural Machinery.