The bearing industry uses different materials for the production of the various bearing components. The materials are processed to achieve desirable properties to maximize bearing performance and life.Generally rolling mill bearing parts are made of high-carbon chromium steel. The parts are martensite quenched when they carry less or no impact load. Bainite quenching should be used when parts carry high impact load. The parts are not only made of carburizing steel but also according carburzation and carbonitridion if they will carry high impact load.
|Carburizing Bearing Steel||G20CrMo / G20CrNiMo||Small and medium-size bearings carry impact load|
|G20CrNi2Mo / G10CrNi3Mo||Medium and large size bearing carry high impact load|
|G20Cr2Ni4||Extra large size bearing carry high impact load|
|High Carbon Chromium Bearing Steel||Gcr15||Small and medium-size bearings carry less or no impact load|
|GCr15SiMn||Large size bearing on mill rolling, no impact load|
|GCr18Mo||According bainite quenching, the bearing used in mill rolling can carry certain impact load and sustain high temperture|