High carbon chrome steel

Countries around the world commonly used GCr15 as the basis of bearing steel, by increasing the composition of the appropriate content of molybdenum (0.1% 0.6%) to improve the direction of hardenability to adapt to the needs of thick-walled bearing parts.

Chromium-free steel

Chromium-free bearing steel is chromium-based bearing steel instead of chrome steel, including GSiMnV, GSiMnMoV, GSiMnMoV, GSiMnMoVR, GMnMoV, GMnMoVR. They have good hardenability, contact fatigue resistance and wear resistance.

Carbon bearing steel

The main role of bearing steel-alloy elements is to improve the hardenability, high strength, high hardness, wear resistance, fatigue and other major performance is the role of carbon elements. Currently, the purity of carbon steel is substantially improved, its performance fully able to meet the requirements of small thickness bearing. There is a trend to further expand the use of carbon steel.

Carburizing bearing steel

With the development of high-speed aero-engine, the United States developed a high-temperature carburizing bearing steel M50NiL, its fracture toughness is particularly good, high-temperature performance of high-speed impact toughness, superior wear resistance and fatigue resistance .

Stainless steel bearing steel

9Gr18 steel to improve the overall performance by reducing the carbon mass fraction to 0.5 ~ 0.7. In Germany, a low nitrogen steel LNS for aircraft engines and aerospace bearings, France developed a XD15N high nitrogen martensitic stainless steel for aerospace bearings, the United States developed a low-nitrogen steel LNS for aircraft engines and aerospace bearings, France developed a XD15N high nitrogen martensitic stainless steel for aerospace bearings, The high-performance carburized stainless steel CSS-42L has also been successfully used in aerospace bearings.

Ceramic material

Ceramic materials used in bearings are mainly Si3N4 and ZrO2 and its series of composite products. The types of ceramic bearings are mainly deep groove ball bearings, angular contact ball bearings and cylindrical roller bearings.