FAG bearing seal life and usage level to a large extent depends on the material. Sealing materials development and technical progress there is a close relationship, almost 30 years, the rapid development of sealing materials, FAG bearings growing type of sealing material, using parameters is also rising. With the development of modern industry, FAG bearing seal of increasingly harsh operating conditions, such as high temperature, low temperature, high pressure, various strong corrosive medium, inflammable media, therefore bearing seal material requirements are also getting higher and higher. Correct selection of bearing sealing material, especially rings and static ring, auxiliary materials, to ensure normal work of FAG bearings seals, to extend the service life of the bearing seal has a very important significance.
We know FAG bearing seal is made up of several parts, the material is based on part of the role, structure, needs and use criteria to select. Only briefly in this chapter of frictional material group material and other components. First, groups of frictional materials in a sense, group of frictional material mechanical properties, chemical, friction characteristics of integrated applications. To ensure the seals friction pairs with a long service life and good sealing performance, in a select group of frictional material, you should note the following principles
(1) wear resistance is one of the most important indicators of friction pairs material, namely less wear, long life.
(2) good corrosion resistance. Results of wear lowers the service life, corrosion increases the face of gap, which makes the media increased leakage.
(3) the FAG bearing high strength. For the avoidance of end face deformation and strength failure, you must select some FAG bearing strength of materials.
(4) good heat resistance and thermal conductivity. Friction heat will adversely affect the wear of friction pairs to prevent frictional heat stress is greater than the permissible stress of the material, maintained in favour of liquid film between end of end surface of must have good heat resistance and thermal conductivity of the material.
(5) small coefficient of friction and there is a certain amount of self-lubricity.
Directly affects the size of the friction heat coefficient of friction, friction surface is not in many cases are adequate lubrication, friction pairs for its selection of materials both factors must be taken into account.


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