cnc engraving machine 1300x2500mm, cast steel structure double head wheel gear servo motor civil aircooling spindle cnc engraving machinewith double head DSP ... , vacuum table, vacuum pump and dust collector system with 6 zones separately control, dust cover, 20 cutters( φ6, φ12.7 ... cooling spindle stepper motor Technical Parameter SD-1325 with double headMachine Bed Size 1600×3100mmWork Envelope 1300 ...