Pump 1 delivers fluid to the left end of main cylinder 2 during the working stroke, and to the right end, whose effective area is reduced by rod 3, during the idle return stroke. Piston rod 3 carries crosspiece 10 to which three piston rods of auxiliary cylinders 4, 5 and 6 are attached. These cylinders are connected by pipelines to power cylinders 7, 8 and 9, whose piston rods feed the spindles of the machine tool.
$4173$CHP,Dr$