... Steppe 4, Working Voltage: AC380/50Hz or AC220/50Hz Auto PCB Punching MachineParameters: 1, Table Size780*1380mm2, Operation ModeSteppe3, Working ... guide rail to get high accuracy;3) Subdivision stepper motor with excellent performance, quick speed, stable operation, and large ... operation;4) Frequency conversion water-cooling large power motor with low noise;5) Humanistic design, the machine can be ...