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BH Series Dual Drive System Different from conventional servo hydraulic mechanisms which continuously control high-speed movement and pressure movement of the ram, the Dual Drive System separately controls high-speed up and down movement by AC servo motor and ball screw drive and hydraulic pressure movement. By the Dual Drive System, high-speed down-movement at 200mm/sec and stable repeat-stop accuracy by AC servo motor and hydraulic drive are enabled, realizing high productivity. In addition, the Dual Drive System is superior in total energy saving because it is fitted with a assist device that stores the energy of down movement and returns it during ram up movement
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