The new Mapal miniature deep hole drills are available in the diameter range from 1.0 to 2.9 mm (shank diameter 3 mm) for universal drilling in steel and cast iron machining and drilling depths between 20xD and 30xD.
The geometry of the new drills has been specially adapted to the small diameter range. Thanks to the newly designed chip flute and special face geometry, very high feeds and cutting speeds are possible with deep hole drills. And due to the innovative cooling channels, the drills are also suitable for use with minimum quantity lubrication (MQL). Despite lengths of up to 30xD, the gas/oil mixture is reliably transported to the cutting edges. Instead of a full coating, the new tools are coated only at the head for higher cost-effectiveness.
