Latest HPR Solid Carbide Drill Comes with Coolant Through and DIN 6535 and 69090-03 MQL Interface

Press Release Summary:

  • Designed for high-speed and high-feed drilling up to 8 x D in any ISO-K material, that provides excellent hole straightness even at highest cutting parameters
  • Features point thinning, special gashing, and 143°-point angle and reduce thrust, keeping the drill running straight even at the highest feed rates
  • Offers corner radius and AlTiN/AlTiSiN multilayer coating with hole tolerance range of IT9 to IT10

Original Press Release:

Kennametal Introduces the HPR Solid Carbide Drill

Next generation high-performance drill for cast iron applications featuring a low-thrust drill point design.

Kennametal has introduced an expansion of its solid carbide drilling portfolio, the HPR drill for highperformance drilling of cast iron workpieces. Designed for high-speed and high-feed drilling up to 8 x D in any ISO-K material, the HPR drill provides excellent hole straightness even at highest cutting parameters.

Winning features
The drill’s patented point thinning, special gashing, and a 143°-point angle provide excellent selfcentering capabilities and reduce thrust, keeping the drill running straight even at the highest feed rates. In addition, four margin lands deliver maximum stability when drilling cross holes and inclined exits. 

A patented corner radius improves tool life significantly and provides excellent 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, or on thin walled applications, or simply when spindle power is the limiting factor,“ says 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.

Outstanding wear resistance
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 new coating is also resistant against the inclusions and pores commonly encountered in these challenging materials.

Ultra-high polished flutes and wide flute cross section promote efficient chip evacuation and further reduce heat and resulting thermal shock. 

The new HPR drill comes with standard coolant through and with a DIN 6535 and 69090-03 MQL (minimum quantity lubrication) interface. With these features the drill excels in either wet or dry machining conditions.

“Whether drilling large quantities of holes or overcoming typical challenges in any type of cast iron workpiece, the HPR drill is clearly the solution,” says Martin.

About Kennametal
With over 80 years as an industrial technology leader, Kennametal Inc. delivers productivity to customers through materials science, tooling and wear-resistant solutions. Customers across aerospace, earthworks, energy, general engineering and transportation turn to Kennametal to help them manufacture with precision and efficiency. Every day approximately 9,000 employees are helping customers in more than 60 countries stay competitive. Kennametal generated nearly $1.9 billion in revenues in fiscal 2020. Learn more at www.kennametal.com. Follow @Kennametal: Twitter, Instagram, Facebook, LinkedIn and YouTube.

CONTACT: Carsten GROMOLL
carsten.gromoll@kennametal.com
+49 911 9735 450

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