Unique wave type cutting edge and special flute geometry for smooth chip evacuation. > New type for high performance drilling. >

Drilling a pilot hole > Initial cutting with the long type drill. > Use a drill with a larger (flatter) point angle than the super long type. Mitsubishi type MZE, MZS or MS is recommended.Use a drill with the same diameter as the deep hole drill.Drill depth : Approx 2-3D or deeper.Ensure a high precision hole is drilled for the guide. Penetrate the guide hole at low revolution. (n=300), and a feed rate of Vf=1000Stop the long type drill 0,5mm-1mm short of the guide hole bottom. Start cutting at the recommended speed and feed with a non-peck (continuous feed) cycle.Retract the drill to the pilot...