As the contact part of the sliding bearing and the journal, the bearing bush is a tile-like semi-cylindrical surface, which 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 the bearing, the bearing pad also plays a very important role. The bearing pad material has certain characteristics in terms of performance, and the relevant knowledge is shared below. The performance characteristics of bearing pad materials mainly include the following points: 1. Anti-friction: The material pair has a low friction coefficient. 2. Abrasion resistance: the anti-wear performance of materials, usually expressed by wear rate. 3. Bite resistance (glue): The heat resistance and adhesion resistance 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. 5. Embedding: The material can accommodate hard particles to embed, thereby reducing the performance of scratches or abrasive wear on the sliding surface of the bearing. 6. Running-in: the ability (or nature) of the surface shape and roughness of the bearing bush and the journal to form a mutual matching surface shape and roughness after a short-term light-load operation. 7. In addition, it should have sufficient strength and corrosion resistance, good thermal conductivity, manufacturability and economy. Plain bearing bush material type: Commonly used bearing materials are: metal materials, non-metal materials and powder metallurgy materials Bearing metal materials generally use bearing alloys (babbitt alloys, white alloys) which are alloys composed of tin, lead, antimony, copper, etc.; copper alloys, which are mainly divided into two types: bronze and brass; cast iron includes ordinary gray cast iron, nodular cast iron etc. Bearing non-metallic materials include plastic, hardwood, rubber, etc., among which plastic is the most used Bearing powder metallurgy material is a porous bearing material made of copper, iron, graphite and other powders after pressing and sintering.  

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