Koyo Seiko Company, Ltd.

Nippon Grease Co., Ltd.

Teruo Yoshida

Hiroshi Ueno

Hiroyoshi Yasui

Tomoaki Satomi

Hiroshi Komiya

Seiji Okamura

Katsunori Tsumura

Toshitaro Oguchi

A retainer for a tapered roller bearing comprising a polyamide resin, 10 to 20% by weight of an elastomer and 15 to 30% by weight of a reinforcing fiber.

Material for retainers of tapered roller bearings

A bearing comprising inner and outer rings formed of a metal and a plurality of balls formed of calcined carbon which has self-lubricating properties and hardness higher than that of the inner and outer rings and has been baked beforehand at a temperature higher than a working temperature of the bearing so as to prevent the outgassing even when used in the circumstances of high temperature.

Bearing

Method of making a bearing

The present invention provides a grease composition comprising a lubricating oil and a thickener, characterized in that the thickener is a diurea compound prepared by reacting a diisocyanate compound with cyclohexylamine and monoalkylphenylamine wherein the alkyl portion has 8 to 16 carbon atoms.

Diurea type grease composition

A sealed type rolling bearing includes an another race, an inner race, a plurality of rolling elements, at least one retainer therefor, and at least one seal plate. The bearing is sealed with grease seal, and grease in the bearing is prevented from flowing at a high rate by means of an annular projection extending radially inwardly from the retainer defining a small gap defined between the projection of the retainer and the inner race.

Sealed rolling bearing with a flow reducing grease passage

An improved tapered roller bearing in which a shoulder at a small diameter end side of an inner race has been eliminated. A shoulder portion for maintaining a state of engagement between an inner race and a cage for holding tapered rollers at circumferentially equally spaced positions after assembling, is formed at an outer peripheral portion of a large diameter side of the inner race. Furthermore, projections for engagement with the shoulder portion are formed in positions not hindering the assembling of the tapered rollers at the large diameter side of the cage.

Growing community of inventors

Osaka, Japan

Teruo Yoshida