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NSK has developed a drawn cup needle roller bearing wich adopt a resin cage

In the aspect of rolling bearing replace sliding bearing, Japan Seiko (NSK) developed low friction loss, light weight drawn cup needle roller bearing. The new product‘s friction loss and weight only is half of plain bearings', and is 3% lower than standard drawn cup Needle roller bearings. The ablation resistance time under thin lubrication is up to 10 times more than the sliding bearings.

NSK solve the above problems by improving the shape of the holder . Specifically, in the holder one week to manufacture several parts bent into a Ω-shape to make it like a spring having elasticity. Thus, the holder will shrink in the radial pressure. Therefore, even when both ends of the outer ring of the first bearing bending, may also be by compressing the holder to embed machine, eliminating the need for a coupled heat treatment.

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