Bearing rings and rolling elements are usually made of high carbon chromium bearing steel. CCr15 is used for most bearings, The bearing rings with large cross sections and rolling elements with large diameters are used good hardenability material CCrl5SiMn . High carbon chromium bearing steel is a hardened steel which surface and heart could be hardenability, it is the best material for rolling bearings.
Due to use in different environment, some bearings require special properties of the material, such as impact resistance, high temperature resistance, corrosion resistance and so on.
Carburized bearing steel is usually used for the rings and rolling elements of bearings that are impacted loads during operation or large and extra-large bearings. Carburized bearing steel is carburized within the appropriate depth range of the surface layer of materials such as chromium molybdenum steel, chromium nickel molybdenum steel or chromium manganese molybdenum steel, so that it has a dense tissue and forms a hardening layer, while the central part has low hardness and has a good heart impact toughness, due to the good use performance of carburized bearing steel, its life calculation is the same as that of high carbon chromium bearing steel.
For bearings working at high temperatures, high-temperature bearing steel with good heat resistance is used for bearings . The bearings contact with corrosion medium in work, which are made of stainless bearing steel.
It is worth noting the cleanliness of the bearing steel, the higher the cleanliness, the less non-metallic inclusions, the lower oxygen content, the longer fatigue life for the bearing, and the vacuum degassing or vacuum remelting steel can meet this requirement. For bearings requiring high reliability, they should be made of electroslag remelted steel.
We could provide all kinds materials of bearing ,such as 52100 steel bearing , Stainless Steel
bearing,Ceramic Bearings,Plastic Bearing and units and so on.
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Post time: Sep-09-2022
