Rotator supportable at side surface thereof by needle bearing

Abstract

Disclosed is a rotor supportable at a side surface thereof by a needle bearing. The side face includes a bearing face with lubricating oil grooves formed therein, and is to be brought into contact with the needle bearing upon assembly. The oil grooves are arranged in a positional relation ship with needles of the needle bearing such that the oil grooves and the needles of the needle bearing do not completely overlap each other along an entire circumference in a direction of rotation. The rotor can be a bush for a one-way clutch, an inner peripheral portion of a stator of a torque converter, or an outer ring of a one-way clutch, said outer ring also serving as an inner peripheral portion of a stator of a torque converter. Preferably, the oil grooves may each be provided with a groove part extending substantially in a direction of a tangent to a raceway circle for said needles.

Dependencies are inferred from the claim text.