| 摘要 |
A thrust bearing (3, 3A, 3B) disposed facing a thrust collar (4) provided on a rotary shaft (1) includes: a top foil (10) disposed facing the thrust collar; a back foil (20) supporting the top foil; and an annular shaped base plate (30) supporting the back foil. The back foil includes back foil pieces (21), and the top foil includes top foil pieces (11). An area on the leading side of a top foil piece in the rotation direction of the rotary shaft is provided with a fixed part (13) fixed to the base plate. A fixed edge (12) positioned on the trailing side of the fixed part in the rotation direction linearly extends such that the separation between a straight line extending in the radial direction of the base plate and the fixed edge positioned on the trailing side of the straight line in the rotation direction gradually increases outward from inside in the radial direction. |
