To provide a rotary machine wherein wear caused on the sliding face is reduced, vibration of a rotor supported by bearings and noises consequent upon the vibration are reduced.

The rotary machine 1 includes a rotor 2 rotating about an axis of rotation, a motor 3 for rotating the rotor 2, bearings 4 supporting the rotor 2, holders 5, 6 holding the bearings 4, and an elastic body 9 provided in the manner of being capable of expansion in the direction of the axis of rotation so as to axially preload the holders 5, 6. The rotary machine 1 is characterized by that a plurality of sliding sheets 10 are placed between the bearings 4 supporting the rotation shaft and a holer 6 holding the bearing 4.