Koyo Seiko Company, Ltd.

Nippondenso Co., Ltd.

Other

Denso Corporation

Aichi Steel Works, Ltd.

Koyo Seiko K.k.

Masayuki Kitamura

Teruo Hoshino

Hajime Tazumi

Kenzo Mitani

Toshihiro Kawaguchi

Yoshiki Fujita

Hiroyuki Miyazaki

Tutomu Siga

Sigenobu Nakamura

Hiroshi Ueno

Akihiro Mizutani

Tsuyoshi Okumura

Yoshitaka Nakagawa

Masao Goto

Hiroki Iwamatsu

Hiroshi Komiya

Junya Ooitsu

Seiji Okamura

Yoshitaka Natsume

Shigetaka Ashida

Takao Ooki

Yatsuka Takata

Yoshihiro Wakikado

Hazime Tazumi

Akira Muroga

Toshikazu Kouno

An antifriction bearing includes a fixed ring which comprises a steel containing up to about 10% of residual austenite. An alternator for vehicles includes a stator mounted on a frame, a rotor having its rotary shaft rotatably supported by a pair of bearings on the frame and a drive pulley mounted on one end of the shaft projecting outward from the frame. The outer ring of at least the bearing toward the pulley comprises a steel containing up to about 10% of residual austenite.

Antifriction bearing and alternator incorporating same for use in vehicles

The present invention is directed to a grease for a rolling bearing containing poly-&agr;-olefin synthetic oil or diphenyl ether synthetic oil, a diurea thickening agent, and an organic antimony compound or an organic molybdenum compound. The present invention is also directed to a rolling bearing in which the grease for a rolling bearing is sealed. The organic antimony compound or the organic molybdenum compound reacts with a metal composing inner and outer bearing rings and a rolling element to form a compound film contributing to the reduction of the force in the tangential direction on a raceway surface of the bearing rings and a surface of the rolling element, thereby preventing an excessively large force in the tangential direction under high-speed rotation. This enables to lengthen the life of the rolling bearing used under particularly severe conditions such as high temperature, high-speed rotation and high road.

Grease for rolling bearing and grease-sealed rolling bearing

A one-way clutch for switching a power transmitting state and a power transmission interrupting state between an inner ring member and an outer ring member. At a plurality of circumferential portions of one of the inner ring member and the outer ring member, there are formed cam faces between the circumference of the one of the inner and outer ring members for forming wedge-shaped spaces which are narrowed in one circumferential direction. These cam faces are made to have a higher hardness than that of rollers which are individually arranged in the wedge-shaped spaces. As a result, the cam faces are suppressed from wear as the time elapses, and the wedge angle of the wedge-shaped spaces is kept substantially constant.

One-way clutch

A ball bearing cage is formed with pockets each having an inwardly curved spherical pocket face similar to a ball in shape. At least one of the pockets has a protrusion projecting inwardly thereof from one of inner and outer circumferential edge portions of the pocket face. A ball bearing comprises balls retained between inner and outer bearing rings and equispaced circumferentially thereof by a cage. The cage is formed with pockets each having an inwardly curved spherical pocket face similar to the ball in shape, at least one of the pockets having a protrusion projecting inwardly thereof from an edge portion of the face close to the fixed one of the rings.

Ball bearing cages and ball bearings

Antifriction bearing and alternator incorporating same for use in

A bearing steel having long rolling life comprising, by weight, 0.65 to 0.90% of C, 0.15 to 0.50% of Si, 0.15 to 1.0% of Mn and 2.0 to 5.0% of Cr, and the balance of Fe. Austenite grain size can be prevented from becoming coarser to make hardening in high temperature possible by further adding one or more of 0.0090 to 0.0200% of N, 0.010 to 0.050% of Al and 0.005 to 0.500% of Nb as optional elements to the steel. Further, rolling fatigue life can be improved by further adding one or more of 0.20 to 0.50% of Ni, 0.10 to 2.00% Of Mo and 0.05 to 1.00% of V as optional elements, and machinability can be improved by further adding one or more of 0.02 to 0.05% of S, 0.005 to 0.10% of rare earth elements, 0.02 to 0.30% of Pb, 0.0005 to 0.0100% of Ca, 0.001 to 0.200% of Bi, 0.005 to 0.20% of Se and 0.005 to 0.100% of Te in the steel as optional elements.

Bearing steel

Growing community of inventors

Osaka, Japan

Masayuki Kitamura