NTN Bearing material relationship with performanc

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Have a certain impact on the choice of material NTN Bearing NTN Bearing performance.slewing ring bearing
Rings and rolling elements of rolling bearings, one side repeatedly subjected to high contact pressure, one side of the rolling contact accompanied with sliding. Holder, side sliding contact with rings and rolling elements on both sides, or a party, side bear tension and compression forces. Accordingly, NTN Bearing rings, rolling elements and cage material, performance, the main requirements are as follows.
Ferrule, the required performance of the rolling material:
High abrasion resistance of high rolling fatigue strength Hardness
To maintain the desired properties of the frame material:
Good dimensional stability and mechanical strength
In addition, you also need good workability. According to different purposes, there are requirements to their impact resistance, heat resistance, good corrosion resistance.
Ferrule and the material of the rolling body:
Rings and rolling usually use carbon chromium bearing steel. Most of NTN Bearing, JIS steel SUJ2. Large NTN Bearing SUJ3.grinding spindle
Imported bearing materials the SUJ2 the chemical ingredients in the world, as NTN has been normalized. : AISL52100 (USA), DIN100Cr6 (West Germany), BS535A99 (UK) are the same kinds of steel.
Further need for impact resistance of the case, as NTN Bearing material chrome steel, chrome-molybdenum steel, nickel-chromium-molybdenum steel, carburizing quenching, the steel has a hardened layer from the surface to the proper depth. With appropriate hardening depth, fine tissue, having excellent impact resistance, than the use of bearing steel. NTN Bearing appropriate hardness of the surface and core hardness carburizing NTN Bearing general carburizing NTN Bearing steel chemical composition.
NSK embodiment of the vacuum degassing treatment, Therefore, the use of a high degree of material purity, the less oxygen content and good quality. And then using the appropriate heat treatment, so that the rolling fatigue life of NTN Bearing significantly improve.
The steels described above, according to the special purposes, but also to use the high speed steel of the excellent heat resistance, good corrosion resistance of stainless steel.
Cage material:crossed roller bearing
The punched retainer material, the use of low carbon steel. Depending on the application, use a brass plate, stainless steel plate. Cutting material holder, the use of high strength brass, carbon steel, in addition, also the use of synthetic resin.