When the head and body of a gundrill are a single piece of carbide brazed to a steel driver, there's no joint at the head/body transition giving the drill.
- More strength and rigidity
- Greater tool life
- Higher penetration rates
Range diameter : 1mm to 16 mm
Range length : 200-220 mm
The Carbide Cutting Tip and steel Tube are brazed.
Oil Hole Configurations play a big part in the gundrill selection process. Coolant systems that lack adequate pressure or volume would benefit from the single oil hole. The single orifice allows more pressure with less volume. Systems with ideal pressure run either Kidney or Dual oil holes for greater chip evacuation and more coolant to the cutting edge.
Range diameter : Ø2.5 to Ø40
Range length : 150 to 3000 mm
Single Round Hole, Single Flute
Two Round Holes, Single Flute
Single Kidney Hole, Single flute