KARBO drill bits with round tungsten pins
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- Very abrasive rock, unfavourable drilling conditions
- Slow drilling progress
- Or use of standard drill bits
KARBO drill bits with ballistic tungsten pins
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- Universal use: soft to medium-hard rock
- Fast drilling progress
- Hard rock (if compact and not too abrasive)
KARBO drill bits with semi-ballistic pins
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- Medium shape between round and ballistic
- Hard, abrasive rock
- Medium drilling progress
KARBO core bits with conical tungsten pins
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- Soft, compact rock (limestone – no quartz)
- Fast drilling progress
- Possibly without rubbing
KARBO drill bits with combined tungsten pins
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- Round, for example
- Or semi-ballistic pins on the outside and ballistic pins on the inside
- Hard, abrasive rock
- Possibly without rubbing
Bit head designs
Depending on the rock you are drilling through, you can choose between 5 bit head designs. Simply let us know the desired shape when you send us your inquiry or order. If you have questions, we gladly help you.
High-speed drill bit
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- Soft to medium-hard rock
Standard
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- For fractured rock – poor drilling conditions
Concave
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- Hard to medium-hard rock
- Deep drill holes, low course
Convex
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- soft – medium-hard rock
Karnebogen GmbH
Hagener Straße 3
58566 Kierspe-Vollme
Telephone: +49 2359 / 7344
Fax: +49 2359 / 4566
E-Mail: post@karbo.de
Business hours
Monday – Thursday
07:00 – 12:00 and 13:00 – 16:00
Friday
07:00 – 12:30