| 摘要 |
Provided is a thrust bearing (3, 3A, 3B) disposed opposite to a thrust collar (4) which is provided on a rotating shaft (1), said thrust bearing being provided with a top foil (10), a back foil (20), and a baseplate (30). The back foil has a plurality of back foil pieces (21). The top foil has a plurality of top foil pieces (11, 50, 60). Furthermore, on each top foil piece, a fixed portion (13) which is fixed to the baseplate is formed on the upstream side in the rotational direction of the rotating shaft, and an inner peripheral edge-side thin portion (15) which is formed by removing the surface opposite to each back foil piece is formed on the inner peripheral edge side of the top foil pieces so as to be thinner than the outer peripheral edge side. |
