Nsk Corporation

Nabtesco Corporation

Hiroshi Sakamoto

Mamoru Aoki

Shunichi Kiyono

Makoto Koganei

Daisuke Tominaga

Masayoshi Nakamura

Kiyoshi Yamamoto

Tatsuya Minamiyama

A tapered roller bearing () is includes an outer ring () having an outer ring raceway surface () on the inner peripheral surface thereof, an inner ring () having an inner ring raceway surface () on the outer peripheral surface thereof, and a plurality of tapered rollers () arranged in a rollable manner between the outer ring raceway surface () and the inner ring raceway surface (). A large flange () is formed on an end portion of the inner ring () on a large-diameter side of the inner ring, and the inner ring raceway surface () continuously extends to the end face () of the inner ring () on a small-diameter side of the inner ring. The contact angle (&#x3b1;) is 37&#xb0;30' to 50&#xb0;. In this manner, the tapered roller bearing having high moment rigidity and long life can be provided.

Tapered roller bearing

Provided is a resin cage for a tapered roller bearing in which a mold parting line which is extended in an axial direction is formed in a pillar portion defining a pocket. On facing surfaces of adjacent pillar portions, on an outer diameter side from the mold parting line, a first conical surface which slides in contact with an outer peripheral surface of a tapered roller is formed, and a first flat surface in a radial direction is formed in a portion on the outer diameter side from the first conical surface. On an inner diameter side from the mold parting line, a second conical surface which slides in contact with the outer peripheral surface of the tapered roller is formed, and a second flat surface in a radial direction is formed in a portion on the inner diameter side from the second conical surface.

Resin cage for tapered roller bearing and tapered roller bearing including the resin cage

Tapered roller bearing cage

Growing community of inventors

Fujisawa, Japan

Hiroshi Sakamoto