Koyo Seiko Company, Ltd.

Jtekt Corporation

Koyo Sealing Techno Co., Ltd.

Kunio Higuchi

Masahide Sunagawa

Ryouhei Hosaka

This sealing device has an annular metal core portion and an annular elastic portion. The elastic portion has a thick portion and a thin portion which extends from the thick portion in an axial direction of the elastic portion and has a thinner thickness in a radial direction than the thick portion. A fixed lip is provided on an inner peripheral surface of the thick portion, and a sliding lip is provided on an inner peripheral surface of the thin portion.

Sealing device and rolling bearing apparatus

A polishing jig of a hydraulic integral system is improved to increase efficiency. A polishing jigfor bearing for use in back-up roll of rolling mill including a shaft memberon which an inner ringof a bearingfor use in back-up roll of rolling mill is fitted; and a pressure-oil chamberoperative in association with the feeding of a pressure oil into the shaft memberto protrude an outer circumferential part of the shaft memberradially outwardly, the polishing jig includes an inner-ring fixing portionfor axially fixing individual inner ringsof a plurality of the bearingsfitted on the shaft memberas axially arranged, wherein a plurality of the pressure-oil chambersare formed internally of the shaft memberin correspondence to the plural bearingsfixed on the shaft member

Growing community of inventors

Kashiba, Japan

Kunio Higuchi