| 摘要 |
A pressure fluid-driven apparatus includes a zero point position-determining mechanism, including an oil supply-adjusting knob formed with an arrow-shaped recess for indicating a zero point position, an insert member internally fitted into a hole of the oil supply-adjusting knob, a stopper for setting an assembled state of the oil supply-adjusting knob and the insert member to be at a zero point position, and a first spline section and a second spline section fitted to one another to determine the position so that the zero point position of the recess corresponds to that of a holder.
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