Cylinder device

摘要

A cylinder device which is capable of restraining the total length thereof to a shorter length even when the stroke is made longer, and which thereby provides the compact appearance and layout of, for example, a machine tool, in which the cylinder device is used. The cylinder device includes a first cylinder provided with an extensible piston rod. The piston rod is constituted as a cylinder tube of a second cylinder. The extensible piston rod of the second cylinder is formed in the interior thereof with a flow path for guiding a working fluid into a cylinder chamber of the second cylinder constituted by the piston rod of the first cylinder.