In recent years, with the development of society, whether it is machine tool bearings or aerospace bearings, most of them now use alumina ceramic materials. It can be said that the bearings made of this material have very good performance in all aspects. In order to let everyone have a better understanding of it, the following will introduce in detail the advantages of alumina ceramic bearings.
First, the reason why alumina ceramic bearings can work in special environments and situations is due to the function of alumina ceramics. Friends who have a certain understanding of alumina ceramics should know that its elastic modulus is much higher than that of metal. The elastic deformation after stress can reduce the vibration of the machine tool to a certain extent, so the spindle and accuracy of many ultra-fine machine tools Alumina ceramic materials are used for extremely high space bearings.
Second, because alumina ceramics have very high hardness, the bearings made of alumina ceramics have excellent wear resistance. In addition, the mechanical strength of alumina ceramics is also very high, its tensile strength and bending strength are similar to metals, and the compressive strength is extremely high, especially under high temperature conditions, alumina ceramic bearings can still adhere High strength and hardness, so compared with bearings of other materials, the service life of alumina ceramic bearings is longer.
Third, as everyone knows, the friction coefficient of alumina ceramics is very small, so alumina ceramic bearings have low heat generation performance. Compared with metal materials, the thermal conductivity of alumina ceramics is very poor, making alumina ceramic bearings in operation The heat generated is very small, therefore, alumina ceramic bearings are favored by many industries.
