The center axis teaches you how to choose the material of the rolling bearing ring and the rolling element

Core Tip: Rolling bearings are a type of bearing that is often used in everyday life. How to correctly select the material of the rolling bearing ferrule and the rolling element is very important. Below, the bearing mesh will teach you how to choose the right material according to the requirements of the rolling bearing ring and the rolling element.

       The rolling bearing is mainly composed of an outer ring, an inner ring, a rolling element and a cage, and is a type of bearing that is often used in daily life. How to correctly select the material of the rolling bearing ferrule and the rolling element is very important, because these two large parts can determine the performance of the rolling bearing. Below, the bearing mesh will teach you how to choose the right material according to the requirements of the rolling bearing ring and the rolling element.

1. High carbon chromium bearing steel

Most bearing rings and rolling elements are made of special steel. The ferrules and rolling elements are made of high carbon chromium bearing steels (GCr15 and GCr15SiMn and ZGCr15 and ZGCr15SiMn). The hardness of the parts is as follows:

The ferrule and roller made of GCr15 and ZGCr15 materials are HRc61~65, and the steel ball is HRc62~66;

The ferrules and rollers made of GCr15SiMn and ZGCr15SiMn materials are HRc60~64, and the steel balls are HRc60~66.

Bearings made of high carbon steel chrome bearing steel can generally be applied to the working temperature range of -40 to 130 degrees, and oil and grease lubrication is normal. The bearings made of high carbon steel chrome bearing steel can meet the requirements of general machinery. After the parts are overheated by high temperature, the working temperature can be as high as 250 degrees.

2, corrosion-resistant bearing steel

The corrosion-resistant bearing steel is used to manufacture the ferrule and the rolling element. The hardness is: the ferrule and the rolling element should not be lower than HRc58, and it is suitable for corrosive medium such as water, nitric acid and chemical reagents, and the temperature is -253~350 degrees Celsius.

3, heat-resistant bearing steel

The rolling element of the ferrule made of heat-resistant bearing steel has a hardness of HRc60~64 for the ferrule and the roller and HRc61~65 for the steel ball. For normal lubrication, it is suitable for working temperature of 120~250 degrees Celsius. Such as aero engine, gas turbine and other spindle working conditions.

4, carburized bearing steel

The ferrule and rolling element made of carburized bearing steel have the hardness: ferrule and rolling element are HRc60~64, generally suitable for working temperature range of -40~140 degrees Celsius, oil and grease lubrication are normal, can be It is used under large shock vibration conditions, such as bearings for rolling stock and rolling mills, but the heat treatment process of this steel is more complicated.https://www.supplyforever.com/