HSS-CO 8 SERIES ANNULAR CUTTERS
PREMIUM CORE DRILLS WITH 8% EXTRA COBALT
HSS-CO 8 annular cutters are premium core drills for metal manufactured from M42 high-speed steel with 8% cobalt. These annular cutters deliver excellent hot hardness, high wear resistance, and long tool life. Ideal for stainless steel, alloy steels, and demanding industrial drilling applications using magnetic drilling machines and professional metal fabrication environments.
Designed in Germany, HSS-CO 8 annular cutters for metal drilling ensure precise, clean holes with reduced vibration and superior cutting performance. Fully ground cutting geometry and cobalt alloy provide exceptional durability and edge retention. Perfect for stainless steel, structural steel, and heavy-duty industrial drilling with magnetic drilling machines.
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| SHORT | LONG | ||
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QUALITY | HSS M42 | HSS M42 |
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ARTICLE NR. | KBK-CO | KBL-CO |
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CUTTING DEPTH | 30 mm (1-3/16″) | 55 mm (2-3/16″) |
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DIAMETER | 12 - 130 mm | 12 - 100 mm |
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SHANK | ||
| ⌀12-60 mm | 19 mm Weldon (3/4″) | 19 mm Weldon (3/4″) | |
| From ⌀61 mm | 32 mm Weldon (1-1/4'') | 32 mm Weldon (1-1/4'') | |
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EJECTOR PIN | ||
| ⌀12-60 mm | ZAK 075 | ZAK 100 | |
| From ⌀61 mm | ZAK 090 | ZAK 120 |
ADVANTAGES OF CORE DRILLS WITH 8% COBALT
M42 HSS MATERIAL
Manufactured from premium M42 high-speed steel with approximately 8% cobalt, offering superior hot hardness, exceptional wear resistance, and extended tool life for demanding professional metal drilling applications.
EXTREME TOUGHNESS
The high cobalt content of M42 HSS provides exceptional toughness and resistance to chipping, enabling reliable drilling in hard, alloyed, and difficult-to-machine materials under heavy-duty operating conditions.
IDEAL FOR STAINLESS STEEL
Designed for efficient and stable drilling in stainless steel and high-strength steels, these Kernbohrer maintain sharp cutting edges, reduce tool wear, and deliver consistent performance in continuous industrial applications.
Recommended Lubricants
SPEED CALCULATOR APP
THE PRECISE SOLUTION FOR OPTIMAL CUTTING SPEEDS With the BDS Speed Calculator App, you can quickly and reliably determine the perfect speed for core drills and magnetic drilling machines. The correct cutting speed prevents overheating, reduces tool wear, and ensures clean, precise drilling results. The app provides precisely calculated values for maximum tool life, optimal performance, and accurate results for every drilling operation – including information on which gear you need to select on the magnetic drilling machine.
