Hilti DD 250

DD 250

Advanced heavy-duty diamond drilling rig for very small to large diameters of 12-450 mm (1/2" - 18”)

  • Wet or dry operation: Wet
  • Drilling range: Rig-based wet: 1/2-17-11/16 in
  • Rotation speed gear 1 under no load: 240 rpm

Features

  • Air-cooled, heavy-duty drive unit with four-speed gearing and convenient controls
  • Hole-starting function for large-sized core bits
  • Designed for versatility – suitable for an extremely wide range of applications
  • Real-time information display – digital spirit level, gear selector, power control function, trip counter, running time counter and easily understood service messages
  • Optional BL quick-release connection lets you change core bits in seconds - no tools required (keyless system)

Applications

  • Penetrations for ducts, pipes and cables
  • Openings for ventilation
  • Blind holes for setting anchors or post-installed rebar
  • Coring holes in ceilings, walls and floors without hammering and vibration

TECHNICAL DATA

Wet or dry operation
Wet
Drilling range
Rig-based wet: 1/2-17-11/16 in
Rotation speed gear 1 under no load
240 rpm
Rotation speed gear 2 under no load
580 rpm
Rotation speed gear 3 under no load
1160 rpm
Number of gears
4
Weight of complete system
81 lb.
Mains Frequency
50/60 Hz
Wall accessibility
1.8 in
A-weighted emission sound pressure level
93 dB (A) 1
Column extension
Yes (Optional)
Service indicator
Yes
GFCI ground fault interrupter
Yes
Corner accessibility
2 in


Applications and Uses

  • Penetrations for ducts, pipes and cables
  • Openings for ventilation
  • Blind ho

 



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