| 主权项 |
1. A thrust bearing disposed so as to face a thrust collar provided on a rotary shaft, the thrust bearing comprising:
a top foil disposed so as to face the thrust collar; a back foil disposed so as to face a surface of the top foil opposite to another surface of the top foil facing the thrust collar, and supporting the top foil; and an annular plate-shaped base plate disposed on a side of the back foil opposite to the top foil, and supporting the back foil; wherein the back foil includes a plurality of back foil pieces arranged in a circumferential direction of the base plate, wherein the top foil includes a plurality of top foil pieces disposed on the plurality of back foil pieces, and wherein a leading side of a top foil piece in a rotation direction of the rotary shaft is provided with a fixed part fixed to the base plate, an inner circumferential edge side of the top foil piece is provided with an inner circumferential edge-side thin part in which a part is removed from a surface of the top foil piece facing a back foil piece, and the inner circumferential edge-side thin part is formed so as to be thinner than an outer circumferential edge side of the top foil piece. |
