Materials with good running-in and embedding properties usually have poor fatigue resistance

For metallic materials, the ones with low hardness and low modulus of elasticity have good embedding properties, while non-metal materials such as carbon graphite have low modulus of elasticity but poor embedding properties. Materials with good running-in and embedding properties usually have poor fatigue resistance.. The microstructure of the material. The ability to withstand one-way load without being crushed or the size unchanged. The affinity of materials and lubricants. The thermal conductivity of the material. Sliding FAG bearings usually use softer and harder materials to form the friction width, and generally use softer materials as bearing bushes. 

The ability of a pair of materials to resist wear. At the service temperature, the strength, hardness, impact strength and uniformity of the bearing material are very important for fatigue resistance. Under specified wear conditions, wear resistance is expressed by the reciprocal of wear rate or wear degree and wear amount. Generally, copper-lead alloys, tin-based FAG imported bearing alloys and aluminum-zinc-silicon alloys have better cavitation resistance. Cavitation resistance When the solid is moving relative to the liquid, when the bubbles in the liquid rupture near the solid surface, local impact high pressure or local high temperature will be generated, which will cause cavitation Mechanical ball bearing wear.

In the process of running-in between the shaft diameter and the bearing bush, the ability to reduce the machining error of the shaft diameter and the bearing bush, the concentricity error, and the surface roughness parameter value to make the contact uniform, thereby reducing the friction and wear rate. Friction compatibility The performance of preventing adhesion and forming boundary lubrication when the shaft diameter is in direct contact with the bearing shell. Therefore, FAG imported bearing materials need to have corrosion resistance.The ability of the material to resist corrosion. Lubricating oil will gradually oxidize when used in the atmosphere, producing acidic substances, and most lubricating oils also contain extreme pressure additives, which will corrode FAG imported bearing materials.

The ability of a material to resist cavitation wear is called cavitation resistance. Embeddedness The ability of the material to allow foreign hard particles in the lubricant to be clamped in to prevent scratches or (and) abrasive wear. The friction factor of the paired materials in the non-lubricated state. The material factors that affect the friction compatibility of the friction pair are: The degree of difficulty of forming an alloy metallurgically in the sub-materials. Fatigue resistance The ability of the material to resist fatigue damage under cyclic loading. Friction compliance The material relies on the elastoplastic deformation of the surface to compensate for the initial poor fit and bending performance of the sliding friction surface. Materials with low elastic modulus have better compliance. The size of the surface energy of the material and the characteristics of the oxide film