Following on from the success of its Tritan-Drill Steel, Rugby-based Mapal Ltd (
www.mapal.com) has introduced the Mega-Deep-Drill and Mega-Pilot-Drill for drilling “the deepest-possible bores with the smallest-diameter drills”.
As the name suggests, the Mega-Pilot-Drill is used as a high-precision pilot drill and is perfectly matched to the Mega-Deep-Drill deep-hole drill, which was developed for hole diameters from 1 to 2.9mm; thanks to a newly designed chip flute and special face geometry, high feeds and cutting speeds are possible. Furthermore, the Mega-Deep-Drill has a coated head for optimal chip removal.
For the high-speed deep drilling of steel and hardened materials, Mapal has developed the Mega-Drill-Hardened and the Mega-Speed-Drill-Inox for machining depths of 8xD and 12xD respectively.
For the Mega-Drill-Hardened, the micro-grain carbide substrate, ‘innovative’ coating and precise geometry have been specially developed to machine materials up to 65HRC while offering good tool life and performance.
On the Mega-Speed-Drill-Inox, a new groove profile has been developed for reaching drilling depths up to 12xD.
The drill features a chip gullet that increases in size towards the shank to ensure that chips do not jam in the drill flutes; these have also been finely ground to a mirror finish to ensure that swarf evacuation is extremely efficient.
For manufacturers drilling steel under unstable machining conditions, Mapal is offering its new QTD Pyramid-tipped drill.
This uses the “smallest-possible amount of carbide, with an indexable insert that positionally centres itself with exceptional precision”.
This precision centring is attributed to a new geometry that has been specially adapted to unstable machining conditions; the geometry also increases wear-resistance and tool life.