The performance and applicable scenarios of bearings will be affected by the selected materials. Manufacturers will select the most suitable materials according to different applications to ensure the reliability and life of the bearings.

Bearing manufacturing materials usually include the following:

1. Steel: Most bearings are made of high-quality alloy steel, such as high-carbon chromium steel (AISI 52100), to provide good strength and wear resistance.

Stainless Steel: Used in special environments or applications requiring corrosion resistance, such as bearings used in wet or corrosive environments.

2. Ceramics: In some high-performance applications, bearings may use ceramic materials such as silicon nitride (Si3N4) or aluminum oxide (Al2O3) to increase hardness and corrosion resistance.

3. Plastic: In some special applications, bearings may use engineering plastics, such as polyamide (Nylon) or polytetrafluoroethylene (PTFE), to meet specific working environment needs.