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Karnasch premium step drills, tube drills & sheet drills

One of the most comprehensive stock ranges of step drills, tube drills and sheet drills

Karnasch step drills are designed to produce perfect circular and simultaneously deburred holes in sheets up to 4 mm. The transition from one step to the other is used for chamfering or deburring the drill hole.

The Karnasch sheet and tube drills are designed for drilling sheets up to 4 mm. They are ideal for enlarging existing holes, drilling oblique holes and creating interlocking holes. The peeling cut produces almost burr-free holes on both sides.

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Steel <1100N, stainless steel, aluminum, copper, plastics, gray cast iron, hardox and rails

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Steel <900N, stainless steel, aluminum, copper, plastics and gray cast iron

Step drills & tube and sheet drills for machining of steel <1100N, stainless steel, aluminum, copper, plastics, gray cast iron, hardox and rails

  • From Ø 3 mm to 60 mm
  • 2 or 3 cutting edges
  • Spiral fluted or straight fluted
  • CBN-grinded
  • Specially adjusted coating

Step drills & tube and sheet drills for machining of steel <900N, stainless steel, aluminum, copper, plastics and gray cast iron

  • From Ø 3 mm to 60 mm
  • 2 or 3 cutting edges
  • Spiral fluted or straight fluted
  • CBN-grinded
  • Specially adjusted coating

Step drills, sheet and tube drills – also available in a kit!

Karnasch step drills, tube drills and sheet drills are also available in a kit with three different drills. Choose between different step drill kits the one that is best suited for your project.

HSS-XE step drills, sheet and tube drills

Karnasch HSS-XE step drills and HSS-XE sheet and tube drills are available in spiral or straight fluted versions. The special 3 surface shank provides excellent torque transmission, no slipping in the chuck and thus enables a significantly higher cutting performance.

All step drills, sheet and tube drills are available in the special BLUE-DUR coating or in TiN-GOLD coating. Tool coatings significantly increase tool life and are highly recommended for difficult materials such as stainless steels and for drilling without lubricant oil / cutting oil.

All step drills, sheet and tube drills come with lasered diameters in the spiral and are made of high alloy HSS-XE steel - for a hardness up to 68 HRC.

Karnasch step drills, sheet and tube drills guarantee smooth cutting, no getting caught in the material, low cutting forces, less burr formation and longer tool life.

step drills, tube drills, sheet drills - product overview

Step drills / tube drills / sheet drills characteristics

  1. Diameter range from 3 mm to 60 mm 
  2. 2 and 3 cutting edges
  3. Spiral fluted or straight fluted
  4. CBN-ground
  5. BLUE-DUR or TiN-GOLD coated

Step drills / tube drills / sheet drills applications

  1. Steel  
  2. Stainless steel
  3. Aluminum
  4. Copper
  5. Plastics
  6. Gray cast iron
  7. Hardox
  8. Rails

Karnasch Step drills / tube drills / sheet drills –  PREMIUM QUALITY FOR PROFESSIONAL APPLICATIONS



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Special 3 surface shank

Best results

The special 3 surface shank provides excellent torque transmission and no slipping in the chuck.

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Significantly higher cutting performance

First-class finishings

The step drills, sheet and tube drills are available in spiral or straight fluted versions. The 3 surface shank and the excellent processing enable a significantly higher cutting performance.

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Diameter range

From 3 mm to 60 mm

Highest precision for perfect results due to narrow engineering tolerances. 

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Specially adjusted coatings

Special BLUE-DUR coating or TiN-GOLD coating

All step drills, sheet and tube drills are available in the special BLUE-DUR coating or in TiN-GOLD coating. These coatings significantly increase tool life and are highly recommended for difficult materials such as stainless steels and for drilling without lubricants.


KARNASCH COATINGS

Tool coatings
for longer tool lives

Karnasch tool coatings - keeping cool even under extreme conditions

Karnasch high precision tools are available with heat-resistant high performance coatings for longer tool lives. The various coatings are adjusted to the materials that are to be processed.

Learn more


Tool coatings
for longer tool lives

Karnasch tool coatings in highest quality

Professionals rely on tool coatings! Achieve optimal results with the premium coatings by Karnasch. Each of our coatings is adjusted to the materials that are to be processed. Choose between ten special coatings: from droplet-free nanocrystalline diamond coating over BLACK-TEC, BLUE-TEC, BLUE-DUR and DURABLUE up to HXC-Nano3, Tcx3, NHC-7000, Kx, DMC-X2, TiN and TiN-GOLD.

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