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NSK has developed automotive electrical components and low noise Needle Roller Bearings
    点击数:3713         日期:2014/4/4
Most of the end portion is processed into a convex arcuate shape to withstand high loads. Prior to the processing method of processing portions so that the projection inferior roundness in the central part of the roller. Therefore, the larger the roller inclination to bump noise emitted when part of the rolling bearing becomes large.
By developing new products and processing methods with high accuracy, so that the convex portion to improve the roundness of the original 1/4. Thus, they put a bearing noise levels occur (sound pressure ratio) down to 1/3 or less
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