Jtekt Corporation

Utsunomiya Kiki Co., Ltd.

Koichiro Tsurumi

Yoshitomo Kabayama

A columnar rotator support shaft supports a planet gear that is a rotator, and has a raceway surface formed on the outer peripheral surface of the rotator support shaft so that a plurality of rollers roll on the raceway surface. The rotator support shaft includes a hollow portion formed so as to be recessed in an axial direction from both axial end faces, a plug serving as a sealing member that seals at least one of openings of the hollow portion at both the end faces, an oil inlet passage through which lubricating oil is supplied into the hollow portion sealed with the plug, and an oil outlet passage through which the lubricating oil in the hollow portion is supplied to the raceway surface. The oil outlet passage passes through the rotator support shaft from the raceway surface to the sealed hollow portion.

Rotator support shaft, method for manufacturing rotator support shaft, and roller bearing

A cage for a thrust roller bearing is provided. The cage has first and second cage members each having an outer ring portion formed radially outside of a roller retention hole. The outer ring portion has a flange portion that extends, from a radially outer end of the outer ring portion, in an axial direction and is divided along the circumferential direction. The flange portion has a large diameter portion and a small diameter portion. The first cage member and the second cage member are fastened to each other while the large diameter portion and small diameter portion of the first cage member overlap the small diameter portion and large diameter portion of the second cage member, respectively.

Growing community of inventors

Utsunomiya, Japan

Koichiro Tsurumi