1, Auto PCB Punching Machine 2, Table Size: 780*1380mm 3, Operation Mode: Steppe 4, Working Voltage: AC380/50Hz or AC220 ... screw rod and round guide rail to get high accuracy;3) Subdivision stepper motor with excellent performance, quick speed, stable operation, and large ... and safe operation;4) Frequency conversion water-cooling large power motor with low noise;5) Humanistic design, the machine can be ...