The Mega-Deep-Drill and Mega-Pilot-Drill have been introduced for drilling the deepest possible bores with the smallest diameter drills. As the name suggests, the Mega-Pilot-Drill is used as a precision pilot drill, and is matched to the Mega-Deep-Drill deep-hole drill, which has been developed for hole diameters from 1 to 2.9 mm. Thanks to the newly designed chip flute and special face geometry, high feeds and cutting speeds are possible. Furthermore, the Mega-Deep-Drill has a coated head that is said to ensure optimal chip removal.
To offer high-speed solutions when drilling steel, hardened materials and for reaching greater drilling depths, Mapal has developed the Mega-Drill-Hardened and the Mega-Speed-Drill-Inox for machining depths of 8xD and 12xD.
For the Mega-Drill-Hardened, the micro-grain carbide substrate and precise geometry of the tool have been developed to machine hard materials up to 65 HRc. The new carbide substrate and its coating ensure extended tool life and performance, says Mapal.
On the Mega-Speed-Drill-Inox, a special groove profile has been developed for reaching drilling depths up to 12xD. The drill features a chip gullet that increases in size toward the shank and, as a result, chips do not jam in the drill flutes. In addition, the chip flutes have been finely ground to a mirror finish to ensure efficient swarf evacuation.
If manufacturers are drilling steel in unstable machining conditions, the latest QTD pyramid-tipped drill is the tool of choice. The QTD series uses the smallest possible amount of carbide with an indexable insert that centres itself. This precision centring is credit to newly designed geometry that has been specially adapted to challenging machining conditions.