Rolling bearing rings and rolling elements, side suffered repeated high contact pressure, sliding along one side of the rolling contact. Maintain control, one side with rings and rolling elements on both sides, or one side sliding contact side suffered tension and contractility. Thus, the bearing rings, rolling elements and maintaining the data frame, the performance, the following important request.
Rings, rolling performance of the requested data: rolling fatigue strength of high hardness, high wear resistance
To maintain the performance of the requested data frame: dimensional stability, good mechanical strength
In addition, you need good processability. According to different use, as well as impact resistance requests, heat resistance, corrosion resistance.
Rings and rolling Information: rings and rolling typically use high carbon chromium bearing steel. Most of the bearing, the use of steel in JIS SUJ2. Large bearings use SUJ3.
SUJ2 chemical composition, in the world, as bearing data has been normalized. For example: With AISL52100 (United States), DIN100Cr6 (West Germany), BS535A99 (UK), etc. are the same kinds of steel.
Need further impact-resistant case, as bearing data using chromium steel, chromium molybdenum steel, nickel-chromium-molybdenum steel, to take carburizing quenching, the steel from the outside to the proper depth with a softened layer. Softening has the appropriate depth, detailed organization, appropriate hardness, appearance and hardness of heart infiltration of carbon bearing, the bearing than the use of bearing steel has excellent impact resistance, the individual carburizing bearing steel chemical composition.
NSK implemented a vacuum degassing solutions, therefore, by the use of information and high purity, oxygen content of less good quality. And then take the appropriate thermal solution, so that the amount of rolling bearing fatigue life is significantly progress.
The steel, the basis for special use, but also excellent in heat resistance, the use of high-speed steel, stainless steel with good corrosion resistance.
Maintaining frame information: Stamping maintain frame data, the use of low-carbon steel. According to different use, but also the use of brass, stainless steel plate. Maintain frame cutting information, the use of high-strength brass, carbon steel, in addition, also the use of decomposed resin.



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