Ntn Corporation

Yoshihide Himeno

Masaki Egami

Eiichirou Shimazu

Kouya Oohira

Kazutoyo Murakami

Mika Kohana

Masaki Higami

Philippe Blondel

Shinya Matsuno

Sylvain Benet

The present invention provides a member for a rolling bearing () which is capable of decreasing the amount of carbon dioxide generated from a polymeric member in discarding the rolling bearing, contributing to restraint or prevention of an increase in the concentration of the carbon dioxide in the atmosphere or a decrease of the concentration thereof in the atmosphere, and allows a continuous use temperature to be high and an endurance time to be long and a rolling bearing using the member. The member for the rolling bearing () is composed of a molding of a polymeric elastic body or a synthetic resin composition. The member is at least one member selected from among an inner ring (), an outer ring (), rolling elements (), a retainer (), and a sealing member (). A raw material derived from a biomass is at least partially used for a producing raw material of a polymeric matrix composing the polymeric elastic body or the synthetic resin composition.

Member for rolling bearing and rolling bearing

It is an object of the present invention to provide a resin composition whose flowability is secured when the resin composition is injection-molded into injection-molded articles such as a resin-made crown-shaped cage and a resin-made seal both for a rolling bearing and a resin-made sliding bearing and which is capable of enhancing the mechanical strengths and toughnesses of these injection-molded articles to such an extent that these injection-molded articles can be used as bearing members. The resin composition is formed into a molded article and used as a bearing member. The resin composition is composed of polyamide resin or polyester resin to which polycarbodiimide is added. The polyamide resin is at least one resin selected from among polyamide 66 resin and polyamide 11 resin. The polyester resin is polytrimethylene terephthalate resin. 0.5 to 6 wt % of the polycarbodiimide is contained in an entirety of the resin composition. A resin-made crown-shaped cage () is obtained by injection-molding the resin composition.

Resin composition and method for production thereof, and rolling bearing and sliding bearing

The present invention provides a member, for a resin-made rolling bearing, which has a low extent of a moisture absorption-caused change in its dimension and mechanical properties, keeps sufficiently high mechanical properties after the member absorbs moisture, and is excellent in its resistance to hydrolysis, grease deterioration, and heat and also provides the rolling bearing in which the member for the rolling bearing is used. A rolling bearing () has an inner ring (), an outer ring (), a plurality of rolling elements () interposed between the inner ring () and the outer ring (), a crown-shaped cage () for retaining the rolling elements (), and a seal () covering an opening disposed at a gap between the inner ring () and the outer ring (). The cage () and the seal () are moldings of a resin composed of polyphthalamide resin.

A universal joint which retains a lubricant, is capable of suppressing the exudation of a lubricating component to a minimum amount and preventing the lubricant from scattering from an open portion when the lubricant is deformed by an external force, and a method for producing the universal joint. In the universal joint, a rotational torque is transmitted by engagement between a torque transmission member () and tracks () provided on an outer member () and an inner member (); the torque transmission member () rolls along the tracks (), thus moving in an axial direction; and a porous solid lubricant () is enclosed on a periphery of the torque transmission member (). The porous solid lubricant () containing a lubricating component and a resin component is a solid made porous by foaming and hardening the resin component.

Growing community of inventors

Mie, Japan

Yoshihide Himeno