mitsui seiki high production machining center model hu50a-5x with 500mm square pallets. numerically controlled with all standard equipment and features including: automatic tool changer, automatic pallet changer, and high......mitsui seiki high production machining center model hu50a-5x with 500mm square pallets. numerically controlled with all standard equipment and features including: automatic tool changer, automatic pallet changer, and high production capability for drilling, boring, tapping and reaming. integrated circuit logic, closed loop, complete electrical equipment for operation on: 3-phases, 50/60hz, 200/220 volts ac.