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Dormer Pramet’s hole-making range grows with new additions

The global cutting tool manufacturer has extended its range of Hydra replaceable head drills, launched a solid carbide drill for aluminium and added a new spotting drill.

Providing a highly cost-effective option for large diameter drilling, the Hydra program supports structural and general engineering applications. Its range of solid carbide heads – for steel, stainless steel and cast iron – are married together with a hardened steel body.

Existing body options – 3xD, 5xD and 8xD – have been expanded with a 12xD for deep hole applications and a 1.5xD option for improved rigidity in shallow hole and plate drilling.

Providing consistently high performance, even after numerous head changes, the range of bodies incorporates coolant holes to improve cutting efficiency and swarf evacuation. The exact fit between head and body maximises tool rigidity for superior hole accuracy and precise tolerances.

Also, one body can fit multiple solid carbide head sizes, reducing inventory requirements. In addition, heads can be easily changed without removing the body from the spindle, minimising machine downtime.

Meanwhile, Dormer Pramet has extended its Force hole-making assortment, with a solid carbide drill for all types of aluminium, from soft to abrasive grades.

The flute and cutting geometry of the new Force N range features a 32° helix angle. This helps to break swarf into small manageable chips and reduce exit burr, which can occur when drilling soft materials.

Offering high metal removal rates and reduced thrust forces to improve hole quality and productivity, Force N is available in 5xD and 8xD lengths with through coolant.

Dormer Pramet’s existing assortment of solid carbide drills includes Force X for use across a variety of materials and Force M for stainless steel.

Finally, Dormer Pramet has launched a new solid carbide drill for fast and accurate spotting. The R125 has a 150° self-centring point geometry, making it ideal for use with high performance drills with point angles around 140°.

Providing consistent performance and repeatability in all materials, a multi-layer TiAlN coating ensures longer tool life, improved cutting-edge stability and wear protection.

Dormer Pramet’s hole-making range grows with new additions


  • Sheffield, UK
  • Dormer Pramet