Radial piston type hydraulic pump

A continuous discharge at high pressure to provide a radial piston type hydraulic pump as possible. A A casing having a cylindrical inner surface, A predetermined amount offset from the axis of the casing is disposed within the casing, an eccentric shaft provided inside the suction port, and the discharge port, Is rotatably disposed on the eccentric shaft, a cylinder barrel formed with the cylinder radially inside, Said formed in the cylinder barrel, one end opening into the cylinder, the other end can communicate with a suction and discharge port to the suction port or discharge port, Slidably disposed within said cylinder, a piston having one end to sliding plate in sliding contact with the installed in the cylindrical surface of the casing, the other end is reciprocated in the cylinder in response to rotation of said cylinder barrel It equipped with a door, Characterized in that a flange portion on the piston end face of the sliding plate side. .FIELD 1