... system using the ball screw, precision, stability,and reliability. Vertical CNC Drilling & Tapping Machine Model ... hole drilling, reaming, tapping , and batch processing , of the small and medium-sized plate, plate and shell of complex parts.3. ... transmission system using the ball screw, precision, stability,and reliability. ItemsParametersMax.Drilling capacitySteel: Ø30Max.Tapping capacitySteel: ...