Fluid is delivered by variable-displacement pump 1 from one end of power cylinder 2 to the other end, reciprocating the piston and the machine tool table rigidly attached to the piston rod. Leakage is compensated for by make-up from tank 3 through check valves 4 in the suction lines. Since in reversing motions the pipelines operate alternately as suction and discharge lines, two check valves are provided.
$4134$CHP,Dr$