... Guide Rails 4.Stepper Motor CM-6050 Engraving And Milling Machine Features:1.The whole machine adopt cast-iron, gantry structure.2,X ... linear square guide rails and TBI ballscrew. 3,High speed engraving and milling water-cooled electrical spindle, can engrave,cut and mill most metals ... customized The drive Motor oF X,Y,Z AxisStepper Motor Spindle 3.0 KW 24000rpm/min Cooling Mode Water-cooled Diameter ...