Rolling bearing is one type of commonly used in our daily life, the rolling bearing is mainly composed of an outer ring, an inner ring, a rolling body and a holding frame which is formed by the combination of. For the rolling bearing rings and rolling bodies, very important material selection. The two parts can be determined using the properties of rolling bearings, we can select the line with material rolling bearing rings and rolling bodies according to demand.

1、高碳铬轴承钢

1, high carbon chromium bearing steel

绝大多数轴承套圈和滚动体都彩用专用钢材制造。用高碳铬轴承钢(GCr15和GCr15SiMn与ZGCr15和ZGCr15SiMn)制造套圈和滚动体，其零件硬度如下：

The vast majority of bearing rings and rolling bodies are color made of special steel. High carbon chromium bearing steel (GCr15 and GCr15SiMn with ZGCr15 and ZGCr15SiMn) manufacturing rings and rolling elements, the hardness of parts as follows:

用GCr15和ZGCr15材料制造的套圈和滚子为HRc61~65，钢球为HRc62~66；

Made of GCr15 and ZGCr15 materials for bearing rings and roller for steel ball HRc61~65, HRc62~66;

用GCr15SiMn和ZGCr15SiMn材料制造的套圈和滚子为HRc60~64，钢球为HRc60~66。

Made of GCr15SiMn and ZGCr15SiMn materials for bearing rings and roller is HRc60~64, ball HRc60~66.

用高碳钢铬轴承钢制造的轴承一般适用于工作温度为-40~130度范围，油与脂润滑正常。可满足一般机械的要求。

Bearing chromium bearing steel manufacturing high carbon steel is generally applicable to the working temperature is -40~130 degrees, normal oil and Zhi Runhua. Can meet the general requirements of mechanical.

高碳铬轴承钢轴承零件经高温回过火后，其适应工作温度可高达250度。

High carbon chromium bearing steel bearing parts by high temperature after the back, adapt to the working temperature can be as high as 250 degrees.

2、渗碳轴承钢

2, carburizing bearing steel

用渗碳轴承钢等制造的套圈和滚动体，其硬度为：套圈和滚动体为HRc60~64，一般适和于工作温度为-40~140摄氏度范围，油与脂润滑正常，能在较大冲击振动条件下使用，如机车车辆及轧钢机用轴承等，但该钢种的热处理工艺比较复杂。

Using carburizing bearing steel and other manufacturing rings and rolling, its hardness is: rings and rolling elements for HRc60~64, generally suitable for the work temperature of -40~140 degrees Celsius range, oil and grease lubrication is normal, can be used in larger impact vibration conditions, such as bearings for locomotives and rolling machine, but the heat treatment process the steel complex.

3、耐热轴承钢

3, the heat-resistant bearing steel

用耐热轴承钢制造的套圈的滚动体，其硬度：套圈和滚子为HRc60~64，钢球为HRc61~65，在润滑正常的情况下，适用于工作温度为120~250摄氏度，如航空发动机、燃气涡轮机等主轴工作条件。

The rolling body made by heat resisting bearing steel rings: rings and roller hardness is HRc60~64, the steel ball is HRc61~65, in the lubrication is normal, is suitable for the work temperature of 120~250 degrees Celsius, such as aircraft engines, gas turbines and other spindle working conditions.

4、耐腐蚀轴承钢

4, the corrosion resistance of bearing steel

用耐腐蚀轴承钢制造套圈和滚动体，其硬度为：套圈和滚动体不应低于HRc58，适用于水、硝酸、化学试剂等腐蚀性介质，温度为-253~350摄氏度。

Corrosion resistant bearing steel rings and rolling bodies, its hardness is: rings and rolling bodies should not be less than HRc58, suitable for water, nitric acid, chemical reagents and other corrosive medium, temperature of -253~350 degrees celsius