The performance of rolling bearings is highly dependent on their material properties. FAG usually uses low-alloy, high-purity, integrally-tempered chrome steel as the material for the manufacture of bearing rings and rolling elements. For bearings bearing high impact loads and alternating bending stresses, carburized steel is used.
In recent years, FAG has been able to significantly increase the bearing capacity of its bearings due to the continuous improvement in the quality of bearing steels (of course, the price is also rising). Research results and practical experience have proven that today's standard rolling bearing steel bearings can achieve unlimited fatigue strength under good lubrication, clean environment and low load.
The heat treatment process of the FAG rolling bearing ring and the rolling element ensures that the bearing is within 150 degrees and the size is stable. For higher operating temperatures, special heat treatment methods are required. If the bearing is used in a corrosive environment, the bearing steel is required to be corrosive. Standard bearings made of stainless steel are prefixed with "S" and suffix "W203B". This bearing is identical to the main dimensions and load carrying capacity of the overall hardened bearing steel bearing. In order to maintain its corrosion resistance, its surface cannot be damaged during installation and use. FAG produces silicon nitride balls for ceramic spindle bearings. Ceramic balls are much lighter than steel balls, and centrifugal force and friction are also significantly smaller than steel balls. This type of bearing can still reach extremely high speeds during grease lubrication, and has a long service life and low operating temperature.
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