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Concentrical Drilling System

MICRO CASING BIT

Straighter - Deeper Holes with Higher Productivity

Smallest concentrical drilling system in the world. applie for long holes such as face bolting, geological survey and drainage holes. Maximum record: 50m horizontal hole in Japan. Plastic casing pipes can be used in Multi slide system.

Standard 2” & 2.5” MCB System(For Face Bolting)

  • • Smallest concentrical drilling system
  • • Applicable for longer holes such as face bolting, geological survey and drainage holes
  • • 50m horizontal hole drilling has been recorded in Japan as longest drilled hole
  • • Easiest handling by smallest diameter and light weight
  • • Achieving high penetration rate

Standard 3” & 4” UMB System(For Fore Piling and Roof bolting)

  • • Established UMB system for All Ground Fasten method
  • • Ring bit has a unique connection
  • • This system has best record at various rock condition in Japan

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