The HPR solid carbide drill for cast iron components is available in diameters from 3.0 mm to 20.0 mm and lengths up to 8xD.
One of the key features of the HPR drill: The low-thrust drill point design for maximum hole straightness.
The HPR drill features patented corner radius for long tool life and excellent hole quality, as well as a wide flute cross section for hassle-free chip evacuation. Four margin lands provide maximum stability for cross-hole drilling and inclined exits.
Kennametal offers the HPR drill for high-performance drilling of cast iron workpieces. Designed for high-speed and high-feed drilling up to 8xD in any ISO-K material, the HPR drill is engineered to provide excellent hole straightness even at high cutting parameters.
"The drill's patented point thinning, special gashing and a 143° point angle provide excellent self-centering capabilities and reduce thrust, keeping the drill running straight even at the highest feedrates," said a company spokesperson. "In addition, four margin lands deliver maximum stability when drilling cross holes and inclined exits."
A patented corner radius improves tool life and provides increased hole quality, meeting a hole tolerance range of IT9 to IT10 while effectively eliminating the workpiece chipping when exiting the hole.
"The drill's low-thrust point design gives users the option to apply the drill under less-than-ideal clamping conditions, on thin walled applications or simply when spindle power is the limiting factor," said Frank Martin, Product Manager, Kennametal. "Extensive testing has shown that this new drill is a solution provider for those types of challenges, as well as for high-volume cast iron production."
The drill's proprietary AlTiN/AlTiSiN multilayer coating withstands the extreme abrasion and high thermal loads encountered when drilling gray cast iron, ductile iron, CGI, ADI and GGG. The coating is also resistant against the inclusions and pores commonly encountered in these challenging materials.
High polished flutes and wide flute cross section promote efficient chip evacuation and further reduce heat and resulting thermal shock.
The HPR drill comes with standard coolant through and with a DIN 6535 and 69090-03 MQL interface. With these features, the drill is suited for wet or dry machining conditions.
For more information contact:
Kennametal Inc.
525 William Penn Place
Suite 3300
Pittsburgh, PA 15219
800-446-7738
www.kennametal.com