Rings and rolling material

(A) carbon chromium bearing steel
Most bearing rings and rolling elements are colored with a special steel manufacturing. With high carbon chromium bearing steel (GCr15 and GCr15SiMn with ZGCr15 and ZGCr15SiMn) manufacture rings and rolling elements, their parts hardness as follows:
GCr15 and ZGCr15 materials with ferrule and the roller is HRc61 ~ 65, the ball was HRc62 ~ 66;
With GCr15SiMn and ZGCr15SiMn material of the ferrule and the roller is HRc60 ~ 64, the ball was HRc60 ~ 66.
With high carbon chromium bearing steel bearings are generally applicable to the operating temperature range of -40 to 130 degrees, the oil and greased properly. Can meet the requirements of general machinery.
Carbon chromium backing bearings  teel bearing parts at high temperature back too far, its adaptation to temperature up to 250 degrees.
With the advances in smelting technology, high carbon chromium bearing steel smelting can use different methods, such as vacuum smelting technology, which will enable the intrinsic quality of steel greatly reforms, especially oxygen content in steel and the formation of non-metallic inclusions have significantly reduced. With this high-carbon chromium bearing steel bearings, the fatigue life can grow exponentially.
According to a large experimental comparative data show that different methods to obtain smelting GCr15, GCr15SiMn, ZGCr15, ZGCr15SiMn bearing steel bearings.
(2) carburizing bearing steel
Carburizing bearing steel manufacturing rings and rolling elements, its hardness is: rings and rolling elements of HRc60 ~ 64, generally applicable, and the operating temperature range of -40 to 140 degrees Celsius, the oil and greased properly, can greater shock and vibration conditions, such as locomotives and rolling mill bearings, etc., but the steel heat treatment process is more complex.
(3) heat-resistant bearing steel
Bearing heat-resistant steel rolling the ferrule body, the hardness: ring and the roller is HRc60 ~ 64, the ball is HRc61 ~ 65, in the case of the normal lubrication is applicable to the temperature of 120 to 250 degrees Celsius, such as aircraft engines, gas turbines and other spindle working conditions.
(4) corrosion-resistant bearing steel
Corrosion resistant bearing steel rings and rolling elements, its hardness is: rings and rolling elements should not be less than HRc58, suitable for water, nitric acid, chemical reagents and other corrosive media, the temperature is -253 to 350 degrees Celsius.