... high accurate ballscrew 3.Stepper driving motors 4.Nc Mini CNC Engraver JCS60601. The machine body is strong, ... Imported high-precision ball screw gap, smooth movement, to ensure that the machine tools high-precision3. Using ... spindle, low noise, strong cutting ability, to ensure the long time working.4. Dust proof ... design, to ensure a longer life time of the machine ...