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Talking about the relationship between the material of NSK bearing and its function

Source: Bearing network time: 2017-10-04

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Japan NSK bearing ferrule and roll body; one side repeatedly suffers from high touch pressure; one side is accompanied by a sliding roll touch. The retainer; one side with the ferrule and the roll body; or one of the sides sliding touch; one side is subjected to tension and Shortening force. Therefore; for the bearing ferrule; the material and function of the roll and cage have the following requirements:
1. The function sought by the ferrule and the roll material: the function of tumbling fatigue strength, high hardness, high wear resistance and high cage material: high dimensional stability and good mechanical strength. Good processability.
According to the use is not the same; there is also demand for its impact resistance, heat resistance, erosion resistance.
Ferrule and roll material: ferrule and roll body are generally made of high carbon chromium bearing steel. Most of the bearings; use JJ steel type SUJ2. Large bearings use SUJ3.
Further need to withstand impact; use chrome steel, chrome molybdenum steel, nickel chrome molybdenum steel as bearing material, adopt carburizing and quenching; make steel have a softening layer from the surface to the proper depth. With proper softening depth and fineness Arrangement, suitable for hardness surface and core hardness of the carburized bearing; better bearing impact than bearing steel bearing; a chemical component of another carburized bearing steel.

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