Silicon nitride balls have many incomparable characteristics of metal materials such as low density, high hardness, high temperature resistance, corrosion resistance, electrical insulation, non-magnetic conductivity, high compressive strength, and good self-lubricating properties. Silicon nitride balls are used as rolling elements，Hybrid ceramic bearings made of alloy steel as ferrules make the most of the advantages of high compressive strength of silicon nitride material, high flexural strength of alloy steel, good toughness, etc. Therefore, silicon nitride bearings have light weight and high speed limit, low friction torque, good running accuracy, long service life and a series of advantages.
Bearings are the soul of all rotating machinery and are called the "chips" of the machinery industry. Without high-end bearings, there is no cutting-edge equipment and precision instruments. Such as: aero-engine bearings, precision machine tool bearings, high-speed rail bearings, nuclear power bearings, especially high-end bearings on cutting-edge weapons and equipment.
Silicon nitride (Si3N4) material is a high-strength artificial crystal, commonly known as "ceramic king", with low density, high hardness, high temperature resistance, corrosion resistance, electrical insulation, non-magnetic conductivity, high compressive strength, good self-lubricating performance, etc. Features. The density of silicon nitride is about 42% of that of bearing steel, the elastic modulus is as high as 320GPa, the tensile strength is 1600MPa, the compressive strength is as high as 3600MPa, and the mechanical properties are almost unchanged below 900 ℃.
The silicon nitride balls ground by Renwa have many incomparable characteristics of metal materials such as low density, high hardness, high temperature resistance, corrosion resistance, electrical insulation, non-magnetic conductivity, high compressive strength, and good self-lubricating performance.
