(1) high carbon chromium bearing steel

Most bearing collar and roller with special steel manufacturing. Bearing keep device (frame) dust cover sealing materials with high carbon chromium bearing steel (GCr15 and GCr15SiMn and ZGCr15 and ZGCr15SiMn) manufacturing rings and rolling elements, its parts hardness is as follows:

Precision machine tool spindle bearing with the prospect of the development of GCr15 and ZGCr15 materials manufacturing rings and roller for HRc61 ~ 65, steel ball for HRc62 ~ 66;

With GCr15SiMn and ZGCr15SiMn materials manufacturing rings and roller for HRc60 ~ 64, steel ball for HRc60 ~ 66.

With high carbon steel chromium bearing steel manufacturing bearing generally applied in work temperature of 40-130-degree range, oil and grease lubrication normal. Can meet the requirement of general machinery.

SKF FAG NSK INA four import bearing brand for code meaning before and after high carbon chromium bearing steel bearing parts by high temperature back after the fire, the work can be as high as 250 degrees temperature.

Along with the progress of the smelting technology, high carbon chromium bearing steel can adopt different smelting methods, such as vacuum smelting technology can make the steel inner quality significantly reform, the institution in steel is oxygen levels and by the formation of the non-metallic inclusions decreased significantly. In this high carbon chromium bearing steel manufacturing bearing, the fatigue life can double growth.

Based on a lot of experimental comparison data show that different smelting method GCr15, GCr15SiMn, get ZGCr15, ZGCr15SiMn bearing steel manufacturing bearing.

(2) carburizing bearing steel

Use carburizing bearing steel and other manufacturing rings and roller, the Nachi bearing the Japanese code prefix that the hardness of: front-runners and rolling body for HRc60 ~ 64, general suitable and in working temperature for-40 ~ 140 degrees c range, oil and grease lubrication normal, can in the big shock vibration condition use, such as the locomotive and rolling mill use bearing, but this kind of steel for heat treatment technology is more complex.

(3) heat resistant bearing steel

With heat resistant bearing steel manufacturing rings rolling body, its hardness: front-runners and roller for HRc60 ~ 64, steel ball for HRc61 ~ 65, in normal lubrication, apply to working temperature for 120 and 250 degrees, such as aviation engine, gas turbines and spindle working conditions.

(4) corrosion resistant bearing steel
SKF special bearing the suffix letters of a corrosion resistant bearing steel manufacturing rings and rolling elements, its hardness is: front-runners and rolling elements should be no less than HRc58, suitable for water, nitric acid, chemical reagent corrosive medium, temperature from 253 to 350 degrees Celsius.
 



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