Kyocera Corporation

Yusaku Ishimine

Koji Kato

Koshi Adachi

Mieko Yashima

Provided are a sliding component, such as a mechanical seal ring, which is capable of maintaining superior sliding characteristics even in the long-term continuous use thereof, as well as a mechanical seal, a faucet valve, and a rolling support device, each of which includes the sliding component. The sliding component includes a stationary member, and a movable member contactedly sliding on the stationary member. The stationary member and the movable member are respectively composed of a silicon carbide sintered body containing graphite. The content of the graphite in one of the stationary member and the movable member is at least 4% by mass greater than in the other. Thus, the sliding component includes the stationary member and the movable member which are a combination of those having different contents of graphite. Owing to a high lubricating effect, the superior sliding characteristics can be maintained, permitting a long-term continuous sliding.

Sliding part, mechanical seal, faucet valve, and rolling support device each including the sliding part

In a guide apparatus having an ultrasonic motor as a driving source of a stage, it is intended to accurately comprehend a degree of abrasion between a friction member of a frictionally driven ultrasonic motor and a drive transmitting member of the stage. A guide apparatus is constructed by an ultrasonic motor, a stage capable of moving on the basis of a friction driving with the ultrasonic motor, a position detecting means for detecting a position of the stage, a driving control portion for outputting a driving command signal to the ultrasonic motor, a non-contact type measuring means for measuring a position information of a friction member in the ultrasonic motor, a slip distance measuring portion for calculating a slip distance of the friction member in the ultrasonic motor, and a monitoring portionequipped with tangential force measuring portion for calculating a tangential force applied to a driving surface of the drive transmitting member in the stage on the basis of the friction driving with the ultrasonic motor.

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Kirishima, Japan

Yusaku Ishimine