... for cylinder 4-axis 3D Rotary CNC engraving machine/ Patented/ 8 or 10 spindles/ engrave Angel in vertical and batch Model ... complex polyhedron.2.Domestic water-cooled spindle motor, high precision, long life, smooth operation, and good startup performance, little noise ... use Taiwan TBI screw rod lead transmission, high precision and long life.6.Taiwan imported linear guide, double rows and ...