Bearings are important parts in mechanical operation. The use of different materials will bring different performances to bearings. Therefore, different bearings used in different fields will have different materials. Today, China bearing network shares the performance comparison of the three major bearing materials based on the knowledge of common bearing materials.

There are three common materials for bearings: metal materials, porous metal materials and non-metallic materials.

1. Metal materials

Bearing metal materials mainly include bearing alloy, copper alloy, aluminum base alloy and cast iron.

Bearing alloy: also known as Babbitt alloy, it mainly contains tin matrix and lead matrix. It has good comprehensive performance and low mechanical strength. It is commonly used in bearing alloy casting on steel or cast iron bearing bush matrix, which is expensive to use.

Copper alloy: mainly contains tin bronze (suitable for medium speed, medium load or heavy load), aluminum bronze (suitable for low speed and heavy load) and lead bronze (suitable for high speed and heavy load).

Cast iron: it belongs to the bearing material with light load and low speed.

2. Porous metal material

The porous metal material of the bearing is mainly made of powder metallurgy, iron or copper powder mixed with graphite, pressed and sintered, and has porous oil storage. It is used for occasions with stable load, low speed and inconvenient refueling.

3. Non metallic materials

Non metallic materials of bearings mainly include plastic, rubber and nylon. It is characterized by low friction coefficient, wear resistance, corrosion resistance, low bearing capacity and large thermal deformation.