The bearing bush is the contact part between the sliding bearing and the journal. It is a tile-like semi-cylindrical surface and is very smooth. It is generally made of wear-resistant materials such as bronze and anti-friction alloy. In special cases, it can be made of wood, engineering plastics or rubber. become. During the use of bearings, the bearing bush also plays a big role. The performance of the bearing bush material has certain characteristics. The relevant knowledge is shared below. The performance characteristics of bearing material mainly include the following points: 1. Friction reduction: The material pair has a low friction coefficient. 2. Wear resistance: The wear resistance of materials, usually expressed in terms of wear rate. 3. Anti-seize (gluing): heat resistance and anti-adhesion of the material. 4. Friction compliance: The ability of the material to compensate for the poor initial fit of the bearing sliding surface through elastic-plastic deformation of the surface layer. 5. Embeddedness: The material accommodates the embedding of hard particles, thereby reducing the ability to scratch or abrasive wear on the sliding surface of the bearing. 6. Running-in property: The ability (or property) of the bearing bush and journal surfaces to form consistent surface shapes and roughness after short-term light-load operation. 7. In addition, it should have sufficient strength and corrosion resistance, good thermal conductivity, processability and economy. Sliding bearing bush material type: Commonly used bearing materials include: metal materials, non-metal materials and powder metallurgy materials Bearing metal materials generally use bearing alloys (babbitt alloy, white alloy), which are alloys composed of tin, lead, antimony, copper, etc.; copper alloys are mainly divided into two categories: bronze and brass; cast irons include ordinary gray cast iron, ductile graphite Cast iron etc. Non-metallic materials for bearings include plastic, hardwood, rubber, etc., among which plastic is the most commonly used Bearing powder metallurgy materials are porous bearing materials made from copper, iron, graphite and other powders that are pressed and sintered.  

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