Nok Corporation

Carl Freudenberg Kg

Hideaki Nagahamaya

Takehiro Nakagawa

Kokichi Hamamoto

Masayuki Tanida

Shiho Sato

Naoto Kobayashi

A sealing device includes an annular reinforcing ring and an elastic body part, and the elastic body part has an annular seal lip, an annular dust lip, and an annular side lip. The side lip extends toward the outer side on an outer periphery side of the dust lip, and includes a distal end portion, a middle portion, and a root portion. The root portion is an annular portion, the middle portion is a portion that is outside of the root portion, and an annular portion that increases in diameter toward an outward side, and the distal end portion is a portion that is outside the middle portion, and an annular portion that increases in diameter toward an outward side. The distal end portion is bent to an inner periphery side from the middle portion.

Sealing device for differential mechanism

Seal

A sealing device capable of preventing turnover of a dust lip and damage to a dust lip caused by insertion of a shaft. A bumper portion () made of a rubber-like elastic body and reducing an impact that the dust lip () receives from the shaft when the shaft is inserted into the sealing device () is provided on the side opposite to the sealed area (O) with respect to the dust lip (), and an inner diameter of a tip of the bumper portion () on an inner peripheral side is set to be larger than an outer diameter of a part of the shaft on which a main lip () and the dust lip () slide and to be smaller than an inner diameter of a part having the largest inner diameter in a portion connecting the main lip () and the dust lip ().

Sealing device

Growing community of inventors

Fukushima, Japan

Hideaki Nagahamaya