ZT44 blasthole drill

Blasthole Drills


  • Horsepower: 800 HP @ 2,100 rpm
  • Compressor: 1,360 CFM @ 350 psi
  • Hole range: 5 1/2 - 8 1/2 in

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Versatility, adaptability and performance for today's varying mining challenges

The ZT44 is a down-the-hole surface drill rig designed for mining-duty applications. It offers high reliability and production with purpose-built structures, a high horsepower engine and large capacity dual-setting compressor that adapts to varying rock hardness conditions. The ZT44 is a versatile machine, used for pre-split, production, auxiliary and other demanding needs.

  • Flexibility to drill in multiple applications on site
  • Core structures consistent with mining environment demands
  • Designed for 24/7 use for exceptional production

Features and benefits

Dual-pressure air compressor

With both high- and low-pressure drill settings, this compressor can adjust to changing drilling conditions, allowing for optimal performance up to 8.5-inch hammer. This largest compressor in its class can handle challenging elevations where production often drops off.

High tractive force and more

Powerful tractive force and an independent oscillating undercarriage deliver maneuverability on uneven grades and the ability to perform in various settings. That gives your operation more flexibility to determine the optimal use of your machine.

Four infrared night vision cameras

Through the use of a video system, your team will have excellent operational awareness around the machine. Plus, bright night-time illumination with LED lighting offers outstanding visibility for operators.

Compact design

The ZT44 blasthole drill adds exceptional versatility to your operation with a compact form that is designed for efficient drilling in tight spaces, while still providing the production capacity of larger machines.

Service accessibility

A wireless remote pendant, easy-access service walkways and unobstructed entry into the operator's enclosure help support lower mean time to repair (MTTR) and aides in machine serviceability.

Optimum heat mitigation

Heat exchange unit mitigates high thermal loads generated during operation. That makes the ZT44 capable of handling temperatures up to 131 F (50 C) in the harshest conditions, while also maintaining user-friendly serviceability.

Working Ranges

Hole diameter 114 to 216 mm 4.5 in. to 8.5 in.
Hammers 102 mm to 203 mm 4.0 in. to 8.0 in.
Drill pipe 102 mm to 140 mm 4.0 in. to 5.5 in.


Pull down force 53.4 kN 12,000 lbs.
Pull back 71.2 kN 16,000 lbs.
Single pass depth 6.1 m 20 ft.
Maximum depth 42.7 m (6 + 1)
30.5 m (4 + 1)
140 ft.
100 ft.
Boom positioning Swing left 10°/right 18°
Tilt 10° below to 35° above horizontal
Mast positioning Dump +16° to -45° from vertical
Rotation pin #1 left/right -20° to +45° from vertical
Rotation pin #2 left/right +45° to 5° from horizontal

Rotary head

Rotation head speed 0 to 99 rpm
Rotation head torque 7.5 kN-m 5,539 lbf-ft

Overall dimensions

Operating weight (maximum) 38,555 kg 85,000 lbs.
Operating height, mast vertical 11.6 m 37 ft. 11 in.
Shipping dimensions (height x weight x length) 3.51 m x 2.89 m x 13.05 m 138 in. x 114 in. x 514 in.

Lower works and propel

Travel auto 2 speed 3 kph 1.86 mph
Oscillation +/- 8°
Traction force 222.4 kN 50,000 lbs.
Ground clearance 381 mm 15 in.
Gradeability 30% 17°

Pipe handling

Carousel capacity 4.5" (114 mm) diameter pipe for 6 pipe carousel + 1 under head
5" (127 mm) diameter pipe for 4 pipe carousel + 1 under head