Comparison of the performance of four bearing materials: ordinary bearing steel AISI52100 (GCr15), stainless steel AISI440 (9Cr18), silicon nitride (Si3N4), and zirconia (ZrO2).

As an important mechanical foundation component, ceramic bearings, due to their unparalleled excellent performance compared to metal bearings, are at the forefront of the new material world in terms of high temperature resistance and super strength. In the past decade, it has been increasingly widely used in various fields of national economy and people's livelihood.

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 Product Advantages

1.Firstly, since ceramics are almost resistant to corrosion, ceramic rolling bearings are suitable for operation in harsh conditions filled with corrosive media.

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

3.Third, ceramics are less affected by Thermal expansion than steel, so when the bearing clearance is fixed, the bearing can be allowed to work in an environment where the temperature difference changes violently.

4.Fourthly, 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.

Product Applications

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 amide, zirconia, silicon nitride, stainless steel or special aviation aluminum, thus expanding the application of ceramic bearings.

Medical equipment, cryogenic engineering, Optical instrument, high-speed machine tools, high-speed motors, printing machinery, food processing machinery.
In the fields of aerospace, navigation, nuclear industry, petroleum, chemical industry, light textile industry, machinery, metallurgy, electricity, food, locomotives, subways, high-speed machine tools, and scientific research, national defense and military technology, it is necessary to work under special working conditions such as high temperature, high speed, deep cold, flammable, explosive, strong corrosion, vacuum, electrical insulation, non magnetic, and dry friction. The indispensable replacement role of ceramic bearings is gradually being recognized by people.

With the continuous progress of processing technology and the increasing level of craftsmanship, the cost of ceramic bearings continues to decrease. They have gradually been applied in small areas of high, precision, and cutting-edge industries in the past, and gradually promoted to various industrial fields of the national economy. The product market prices are also gradually approaching practicality, reaching a level acceptable to users. The wave of large-scale application of ceramic bearings has surged!