Performance comparison of three common bearing materials

Upload Time:

2022-04-12

Bearings are important parts in mechanical operation. The use of different materials will bring different performances to the bearings. Therefore, the bearings used in different fields are different, and their materials are also different. Today, Hongfan Bearings is based on the common materials of bearings. With the understanding of knowledge, share the performance comparison of the three major materials for bearings.

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

1. Metal material

Bearing metal materials mainly include: bearing alloys, copper alloys, aluminum-based alloys and cast iron.

Bearing alloy: It can also be called Babbitt alloy, which mainly contains tin matrix and lead matrix. It has good comprehensive performance and low mechanical strength. It is often used in bearing alloys cast on steel or cast iron bearing bush substrates, which is expensive to use.

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

Cast iron: It belongs to the bearing material of light load and low speed.

2. Porous metal materials

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

3. Non-metallic materials

The non-metallic materials of bearings mainly include: plastic, rubber and nylon. Its characteristics are: small friction coefficient, wear resistance, corrosion resistance, low load bearing and large thermal deformation.