Jtekt Corporation

Koyo Sealing Techno Co., Ltd.

Takehisa Kida

Hiroshi Ueno

Masaaki Ohtsuki

Toshihiko Shiraki

Masaki Abe

Tomonori Nakashita

Akio Oshima

Shigenori Bando

Ryuji Nakata

Kazunori Hayashida

Kazutoshi Yamamoto

Tetsuro Inoue

Tomotaka Nakagawa

Ryuuji Nakata

Takahiro Yamagishi

Masanobu Kato

A turbocharger includes a turbine wheel having a center hole and a turbine shaft having one end secured on a small-diameter inner circumferential surface of the center hole. A large-diameter inner circumferential surface and a large diameter outer circumferential surface are formed to provide a cylindrical clearance opening toward a bearing housing between the center hole and the outer circumferential surface of the turbine shaft.

Turbocharger

A supercharger includes a housing, and a turbine shaft supported in a center hole in the housing through rolling bearings. Lubricating oil for the rolling bearings exists only within the housing. A cooling water jacket is provided within a body portion of the housing over a region from one axial end portion of the body portion to the other axial end portion thereof.

Supercharger

A turbocharger includes a housing, and a turbine shaft supported in a center hole in the housing through rolling bearings. A tank portion for storing lubrication oil is formed in the housing, and the lubricating oil is supplied from the tank portion to the rolling bearings through wick members extending from the tank portion respectively to the rolling bearings. The wick member includes a bundle of fibers made of a plastics material, and a distal end portion thereof is separated into a fibrous condition, and this distal end portion is held in contact with the bearing. The lubricating oil is supplied to the bearing by a capillary action of the wick member.

The invention relates to a sealing composition which comprises a crosslinkable fluoroelastomer, a crosslinking agent for this elastomer and a reinforcing polyimide resin powder; and seals such as O-rings, made by molding the composition into a prescribed shape and crosslinking the molded article. According to the invention, seals free from metals and sulfur can be made from a fluoroelastomer suitable for the production unit for semiconductor devices without a scatter of physical properties within one seal or among seals, and the obtained seals are lowered in the compression set determined ate the same hardness level to cause little permanent set by compression in use, thus having a prolonged service life.

Sealing composition and seals made by using the same

Growing community of inventors

Izumisano, Japan

Takehisa Kida