Rock cuts and city roads — flexible air wherever the work moves

Blast-hole drilling in mountain road cuts, slope work and urban road breaking — the unit moves with the working face

Typical challenges

Mountain cuts mean many blast holes and tight schedules; rigs must keep drilling

The face keeps moving and the unit is towed daily — chassis must be reliable

At altitude or in severe cold, diesel engines lose power

Urban roadworks face noise and exhaust limits and night-work restrictions

DTH rigs drill blast holes in cuts and embankments; air drives the hammer

High-pressure air blows rock dust out, keeping hole depth and charging quality

Anchor drilling and hole cleaning on cut slopes also depend on steady air

Typical hole size / depth / duty

Blast holes Ø90–115 mm, 6–15 m deep; breakers and paving breakers in town

Recommended pressure & air delivery

DTH rigs 1.7–2.4 MPa, 18–24 m³/min; breakers 0.7–0.8 MPa, 10–13 m³/min

Recommended models

Results

Dual-duty models switch pressure and flow between hard and soft rock, so one unit suits the whole route; the trailer chassis suits daily moves

At altitude, correct air flow and go one size up if needed
Check the drawbar, tyres and parking brake before every move
For night work in town choose a low-noise unit and keep it away from the breakers

Medium-pressure DTH rigs usually need 1.7–2.4 MPa; harder rock and deeper holes need more. Size to the hammer's rated pressure.

A breaker uses about 1–1.5 m³/min, so a 10–13 m³/min unit typically runs 6–8, depending on hose length and losses.

Engines take in less air at altitude and lose power; choose the high-altitude intake option or go one size up by the derating factor.

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KayDrill Portable Compressor Selection Guide V3

Complex application? Talk to an engineer