Thrust bearing

Abstract

In a thrust bearing (1) supporting a load in a thrust direction in a rotary portion, a size of a curved surface (32) in the forward side of a lubricating groove (3) with respect to a relative rotating direction (S) of an opposing sliding member is set to be larger than a size of a curved surface (31) in the rearward side of the lubricating groove (3) with respect to the relative rotating direction (S), and a depth (d1) of the lubricating groove (3) is set to be deeper than a starting point (32a) in the side of a groove bottom (33) of the curved surface (32) formed in the groove shoulder in the forward side of the lubricating groove (3) with respect to the rotating direction (S), so that a lubricating effect and a cooling effect are increased.

Dependencies are inferred from the claim text.