... software, Artcut software, Artcam software9) Power source: 3 phase 380V10) Driver type: stepper motor11) Spindle: 4.5KW constant power spindle12) Spindle speed: 0 - 24000rpm13 ... marble, onyx, ceramic, chemical synthesis board, bamboo or curved, spherical. Constant Power Spindle Stable Operation Large Heavy Load CNC Engraver JCUT-1218C ...