... voltage controlled Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC system control;2, Stepper ... motor drive;3, Ball screw drive;4, Cylinder linear guide rail, ball slider sliding;5, AC variable speed ... protection and energy saving, safe, reliable, good working conditions for workers. Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder