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. Surplus fluid from the right end of cylinder 2 is exhausted through check valve 5 to tank 3. On the reverse stroke, when fluid is drawn in from the left end of the cylinder and delivered to the right end, the lacking fluid is made up from tank 3 through check valve 4.
$4135$CHP,Dr$