Ceramic bearing

Ceramic bearings have characteristics such as high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetoelectric insulation, oil-free self-lubrication, and high rotational speed. It can be used in extremely harsh environments and special working conditions, and can be widely used in aviation, aerospace, navigation, petroleum, chemical, automotive, electronic equipment, metallurgy, power, textiles, pumps, medical equipment, scientific research, national defense and military fields. It is a high-tech product for the application of new materials.

The rings and rolling elements of ceramic bearings are made of all ceramic materials, including zirconia (ZrO2), silicon nitride (Si3N4), and silicon carbide (Sic). The retainer is made of polytetrafluoroethylene, nylon 66, polyether imide, zirconia, silicon nitride, stainless steel or special aviation aluminum, thereby expanding the application range of ceramic bearings.

Characteristics of ceramic bearings

1. Due to the fact that ceramics are almost resistant to corrosion, ceramic rolling bearings are suitable for operation in harsh conditions filled with corrosive media.

2. Due to the lower density and much lighter weight of ceramic rolling balls compared to steel, the centrifugal force on the outer ring during rotation can be reduced by 40%, thereby greatly extending its service life.

3. Ceramics are less affected by thermal expansion and contraction than steel, so when the clearance between bearings is fixed, they can allow the bearings to work in environments with severe temperature changes.

4. Due to the higher elastic modulus of ceramics compared to steel, they are less prone to deformation under stress, which is beneficial for improving working speed and achieving higher accuracy.