Jtekt Corporation

Kazuhiro Kimura

Masaaki Ohtsuki

Jun Matsunami

Kazuma Okada

Yui Tanaka

Kousuke Yamada

A rolling bearing includes an inner ring, an outer ring, and a plurality of balls interposed between the inner ring and the outer ring. The inner ring and the outer ring are made of stainless steel. A raceway surface with which the ball is in rolling-contact in each of the inner ring and the outer ring and is a superfinished surface and a coating layer made of a solid lubricating film is formed on the superfinished surface.

Rolling bearing and method for manufacturing rolling bearing

A rolling bearing device includes a rotary shaft; a housing; a pair of rolling bearings; an outer ring spacer; an elastic member provided in a bottom side of the housing, the bottom side of the housing being a second axial side of the housing, and the elastic member being configured to urge the rolling bearings, the outer ring spacer, and the rotary shaft toward a first axial side; and a retaining ring that is fitted into a circumferential groove provided on an inner periphery in the first axial side of the housing, the retaining ring being in axial contact with the outer ring of the rolling bearing located on the first axial side, and the retaining ring including at least three arc members arranged in a circumferential direction.

Rolling bearing device and assembling method for the same

A bearing housing in which a rolling bearing is built includes a cylindrical inner circumferential surface and an end face formed continuously with an axial end of the inner circumferential surface in an orientation perpendicular to a central axis of the inner circumferential surface. The inner circumferential surface has an annular groove that is radially outwardly recessed around an entire circumference of the inner circumferential surface. A snap ring is attached into the annular groove to reduce displacement of the rolling bearing. A recess recessed in an axial direction and extending in a radial direction is provided in the end face of the bearing housing.

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Kashihara, Japan

Kazuhiro Kimura