Rings and rolling elements with material

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 (1) carbon chromium bearing steel
The vast majority of the bearing rings and rolling body color with a special steel manufacturing. High-carbon chromium bearing steel manufacturing f errule (GCr15 GCr15SiMn with the ZGCr15 and ZGCr15SiMn) and rolling body, its parts hardness as follows:angular ball bearing
Manufactured using GCr15 and ZGCr15 materials ferrule and roller HRc61 ~ 65, steel ball is HRc62 ~ 66;
Use the ferrule and manufacturing GCr15SiMn, and ZGCr15SiMn material roller for HRc60 ~ 64, Ball for HRc60 66.
Chromium bearing steel manufacturing high-carbon steel bearings are generally applicable to the working temperature range of -40 to 130 degrees, normal oil and grease lubrication. Can meet the requirements of the general machinery.
Carbon chromium bearing steel bearing parts after high temperature back too far, and its adaptation to temperature up to 250 degrees.
Carbon chromium bearing steel smelting as smelting technology advances, such as vacuum smelting technology, the intrinsic quality of the steel can be greatly reform, especia lly the oxygen content in steel and the formation of non-metallic inclusions significantly reduced. With carbon chromium bearing steel bearing fatigue life can grow exponentially.
Based on a large number of comparison data showed that different methods of smelting GCr15 bearing steel of GCr15SiMn ZGCr15, ZGCr15SiMn manufacture bearings.
(2) carburizing bearing steel
Carburizing bearing steel manufacturing the ferrule and rolling body, its hardness: rings and rolling elements of as HRc60 to 64, general fitness and working temperature range of -40 to 140 degrees Celsius, normal oil and grease lubrication can greater shock and vibration conditions, such as locomotives and rolling mill bearings, but the steel heat treatment process more complicated.
(3) Heat-bearing steel
The rolling body of the ferrule with the heat-resistant bearing steel, the hardness: the ferrule and the roller of HRC60 ~~ 64 steel balls for HRC61 to 65 in lubricated normal circumsta nces, suitable for the working temperature is 120 to 250 degrees Celsius, such as aircraft engines, gas turbines and other the spindle working conditions.
(4) Corrosion resistance of the bearing steel
Corrosion-resistant bearing steel rings and rolling elements, its hardness: rings and rolling elements should not be less than HRc58, suitable for aggressive media such as water, nitric acid, chemical reagents, temperature -253 to 350 degrees Celsius.china ball bearing