Nsk Corporation

Masaji Kashimoto

Hiroki Mizuno

Shigeo Tokura

Takayuki Kurashima

In a ring shaped part washing method an ultrasonic vibration plate is disposed in a washing tank filled with a washing fluid , and ultrasonic waves generated by the ultrasonic vibration plate are applied to ring-shaped parts disposed in the washing tank to thereby remove foreign substances stick to the ring-shaped parts therefrom. The ring-shaped parts are disposed inclinedly with respect to the ultrasonic vibration plate in such a manner that the axes of the ring-shaped parts intersect with the plate surface of the ultrasonic vibration plate at an angle &thgr; other than a right angle.

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Fukushima, Japan

Masaji Kashimoto