CNC drilling machine ZSK2102BSingle,Multi-spindle 3-D CNC Deep Hole Drilling Machine is suitable for drilling 3-D or 2-D holes system. It is adopted chip moved outer method(gundrulling method)with high efficiency,highaccuracy and high automatic . It can instead of drilling,counting,reaming by one time drilling process.Bord accuracy is IT7-IT10,roughness Ra0.8-3.2µm . This machine is widely used ...