| 摘要 |
<p>A single-acting hydraulic cylinder (1) is retracted by the pressure of operating liquid guided from a hydraulic pressure source to a rod-side chamber (6) which is one of the rod-side chamber (6) and a bottom-side chamber (5), which are separated by a piston (40). The single-acting hydraulic cylinder (1) is provided with: a cylinder tube (10) in which the piston (40) is received in a slidable manner and which has therein the rod-side chamber (6) and the bottom-side chamber (5); a piston rod (20) which is connected to the piston (40) and which protrudes to the outside from the cylinder tube (10); a tank chamber (7) which connects to the bottom-side chamber (5); a filling port (26) which is used to fill the bottom-side chamber (5) or the tank chamber (7) with a lubricating liquid from the outside; and a sealing section (14) for sealing the filling port (26).</p> |
