Sumitomo MDW-NHGS drills up to 10xD
The MDW-NHGS drill range from Sumitomo Electric Hardmetal is now able to produce deeper holes up to 10 times the diameter of the tool in aluminium, brass and bronze. The range is focused on reducing the thrust required through a stronger design of helix leading into a special sharp cutting edge while incorporating the company's Aurora Coat diamond-like carbon coating.
Available in drill sizes between 3 and 16 mm, with through-tool coolant feed, standard drill lengths are 3xD, 5xD and 10xD. Customised length drills can also be supplied providing the overall length does not exceed 290 mm.
The coating offers a lubricated cutting surface that has a low coefficient of friction between 0.05 and 0.2, says Sumitomo. Combined with the special helix and cutting edge geometry, the MDW-NHGS range is said to enable the precise control of chips while supressing the formation of any built-up edge.
