Set step drills HSS-XE Uncoated, 2 cutting edges
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The Karnasch Professional step drill made of HSS-XE steel and spiral fluted with split point
Karnasch STEP DRILLS are designed to drill perfectly round holes in sheet metals of an thickness 4 - 5 mm. The transition from one step to the next perfectly deburrs the previously drilled hole. Step drills are therefore a drilling and deburring tool combination.
This versatile tool combines several drills with diameters of 4 - 30 mm. The radius transition simultaneously bezels or deburrs the bore holes.
The drills are axial-radially relief grounded and can be resharpened at the tooth face.
Made of high-alloyed special steel XE“ for considerably longer service life than HSS-Steel.
3 step drills HSS-XE:
step drills, Diameter 4 - 12 mm
step drills, Diameter 4 - 20 mm
step drills, Diameter 6 - 30 mm
3-Flat shank for:
- Excellent torque transmission
- No slippage in the drill chuck
- This results to superior cutting output
All step drills and sheets drills are available in the patented BLUE-DUR-coating or TiN-GOLD-coating. Coatings significantly increase the service life. Strongly recommended for difficult materials such as stainless steels and if drilling without coolants.
All step drills and sheet drills comes lasered with diameters in the spiral.
All step drills and sheet drills are made of high-alloy steel HSS-XE for a hardness up to 68 HRC. This results in high wear resistance and service life.
Step drills and sheet drills are also available spiral-fluted for:
- Smooth cutting behavior
- No sticking in the material
- Low cutting forces
- Less burrs on the work piece
- Longer service life
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