Main Material Of Bearing: Bearing Steel

What is bearing steel
Steel used to make balls, rollers and bearing rings. Bearing steel is also known as high carbon chromium steel, the carbon content of WC is about 1%, containing chromium content WCR is 0.5%-1.65%. Bearing steel is divided into six categories: high carbon chromium bearing steel, chromium free bearing steel, carburizing bearing steel, stainless bearing steel, medium and high temperature bearing steel and antimagnetic bearing steel.

Characteristics of bearing steel
Bearing steels have high and uniform hardness and wear resistance, as well as high elastic limits. The uniformity of the chemical composition of bearing steel, the content and distribution of non-metallic inclusions, and the distribution of carbides are very strict, which is one of the most demanding steels in all steel production.

The use of bearing steel

Bearing steel is a kind of steel used in the manufacture of ball, roller and sleeve of rolling bearings. It can also be used in the manufacture of precision measuring tools, cold stamping dies, machine tool lead screws, such as punching dies, measuring tools, taps and precision parts of diesel oil pumps. Bearing steel is used to make balls, rollers and bearing rings.

The purity of bearing steel
The fatigue spalling of bearing parts is related to non-metallic inclusions in steel, especially oxides. This is because when the rolling bearing rotates, the contact surface of the bearing parts is under the action of impulse load, and the non-metallic inclusions cause the local destruction of the continuity of the steel matrix structure, resulting in the concentration of internal stress, the plastic deformation around the non-metallic inclusions and the formation of micro-cracks. In addition, the content of gas (oxygen, nitrogen, hydrogen) in bearing steel is also an important indicator to measure the purity. Reducing gas content is an important link to improve the purity of bearing steel.

Bearing steel affects the life of bearings
The life and reliability of bearings are related to the structural design of bearings, the materials used, the cold and hot processing technology and equipment, the installation and use conditions and other factors, among which, the material and heat treatment are one of the main factors affecting the life and feasibility of bearings. Due to the influence of material and heat treatment process, such as low material strength, poor purity, unreasonable fiber orientation of metal material, low hardness, improper forging ratio, large residual stress and other factors are easy to cause bearing damage.

BMB Bearings uses high-quality bearing materials
For bearing manufacturing enterprise, the selection of qualified, high-quality bearing materials is one of the key factors to improve the bearing life, BMB bearings is a complete one-stop supplier, OEM and wholesale purchase high-precision, miniature ball bearings, ball bearing industry related products, and related professional services, including a world class engineering and design. BMB Bearings uses high-quality bearing materials for production and processing to provide high-quality products.