Parts, Machinery and Tools (West Exhibition Hall)

NSK

Ball screw for regenerative braking system
NSK has developed rolling process and heat treatment to suppress deformation of a screw shaft and abolished grinding process of the shaft grooves after heat treatment, which is a normal process, so that we have made it possible to mass-produce a thin and hollow ball screw.
It is adopted the NSK's unique mechanism to prevent balls from going a raceway other than its intended screw circuit and it helps to secure a high reliability for long periods.
　In addition, the ball screw is composed of a grind nut and a rolling shaft to reduce surface roughness and decrease the friction loss of the ball screw.
　These NSK's technology contributes to improve the controlled performance and achieves natural operation of a brake system.

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