CoroDrill® DS20

Strong and fatigue-resistant drill body

Each drill body size is individually optimized and offers unprecedented stiffness to ensure high process security, repeatability, consistent quality and good run-out accuracy. Twisted coolant holes maintain drill body rigidity and variable chip flutes are optimally shaped for safe chip evacuation.

  • Secure and reliable cutting process with high productivity and a consistent hole diameter
    Versatile drill with optimized chip control and chip evacuation in a broad cutting data range
  • Large selection of geometries, from versatile to optimized offers
  • Low cost per hole
  • Reduced sound level
  • Strategically placed coolant outlets to ensure best possible flow and direction
  • Chip flute shapes are individually designed for the center/peripheral inserts respectively and optimized for each drill diameter. The square profile adds rigidity while allowing chips to be easily evacuated
  • Four true cutting edges on both peripheral and central inserts
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Optimized insert design

The robust insert seats have three support contact surfaces for less insert movement. The inserts are strong and have a bulk strength that provides extra toughness, resulting in unmatched insert tool life. The ground peripheral insert allows for closer hole tolerance, predictability and consistent performance.

For holes up to 7×DC

This 7 × DC insert drill with innovative drill body and insert designs enables cost-effective and reliable drilling of deep holes with less demanding hole tolerances. No pilot drilling is needed, which saves both time and money.

Application area

Conventional
drilling
Inclined exits Inclined surfaces
 
Crossholes Convex/
concave surfaces
 

ISO application area

  • Diameter range and depth capacity:
    15–45 mm (0.625–1.75 inches), 4–7×DC
    46–65 mm (1.875–2.50 inches), 4–5×DC
  • Hole tolerance:
    4–5 × DC: H12–H13
    6–7 × DC: -0.1/+0.5 mm (-0.004/+0.020 inches)
  • Capable of both non-rotating and rotating set-ups
  • Can be used for drilling with radial offset, boring and deburring
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    Steel
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    Stainless steel
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    Cast iron
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    Non-ferrous materials
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    Heat resistant super alloys
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    Hardened steel