| 摘要 |
A radial-piston type hydraulic machine includes a plurality of pistons (20), a cylinder block (24) on which a plurality of cylinders (22) is formed, a first end plate (26), a second end plate (27), a cam shaft (30), and a first roller bearing (60) and a second roller bearing (65) disposed between the first and second end plates (26, 27) and the cam shaft (30), respectively. The first and second roller bearings (60, 65) include a rotary ring (61, 66) fixed to the cam shaft (30), a stationary ring (62, 67) fixed to the first or second end plate (26, 27), and a rolling element (63, 68) disposed between the rotary ring (61, 66) and the stationary ring (62, 67). The stationary ring (62) of the first roller bearing (60) is in contact with the first end plate (26) without a gap in the axial direction. The stationary ring (67) of the second roller bearing (65) is disposed at a distance from the second end plate (27) so as to have a gap in the axial direction. The hydraulic machine further includes a biasing member (70) for biasing the stationary ring (67) of the second roller bearing (65) toward the first roller bearing (60) in the axial direction, the biasing member (70) being disposed between an end surface of the stationary ring (67) of the second roller bearing (65) and a radial wall surface of the second end plate (27), the radial wall surface extending along the radial direction so as to face the end surface. |
