| 摘要 |
A clamp apparatus has a lower body. A rotary driving source driven by an electric signal, a pump mechanism having a pressure oil-sucking/discharging mechanism energized/deenergized by the rotary driving source, a cylinder mechanism provided with a piston for moving in an axial direction in accordance with supply of pressure oil, and an accumulator for retaining the pressure oil are integrally assembled to the lower body.
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