| 摘要 |
<p>An actuator includes a cylinder, a piston that is disposed in the cylinder and moves by supply and exhaust of working oil to and from the cylinder, a movable rod that is connected to the piston, a screw shaft, at least a part of which is inserted into the movable rod, a nut that is threaded to the screw shaft and moves integrally with the piston, and an electric motor that rotates the screw shaft forward or backward.</p> |
