公开(公告)号：US12297870B2

公开(公告)日：2025-05-13

申请号：US18165360

申请日：2023-02-07

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Seiji Sano

IPC: F16C9/02 ,  F16C17/04 ,  F16C33/04

Abstract: A half thrust bearing includes a slide surface which includes: at least two oil grooves extending in a radial direction; a plurality of pad surfaces located on both sides of each oil groove in a circumferential direction; and at least two first inclined surfaces each formed between the oil groove and the pad surface on a front side of the oil groove in a rotation direction of a crankshaft. A plurality of circumferential grooves are formed in succession in the radial direction on the first inclined surface. A plurality of oil drain grooves extends side by side to intersect the circumferential direction and the radial direction on the pad surface. A plurality of flat portions are formed each between the adjacent oil drain grooves. Each oil drain groove is open at a radially outer end and/or a radially inner end of the pad surface.