Blasthole drill

ZT44

Horsepower 597 kW @ 2 100 rpm 800 HP @ 2,100 rpm
Compressor 38.5 CMM @ 34.5 bar 1,360 CFM @ 350 psi
Hole range 140 - 220 mm 5.5 - 8.5 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

Komatsu ZT44 Blasthole drill in mining site

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.

Komatsu ZT44 blasthole drill on quarry road

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.

Komatsu ZT44 blasthole drill on the mining site

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.

Komatsu ZT44 blasthole drill on mining site

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.

Field service technicians on Komatsu ZT44 blasthole drill

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.

Specifications for ZT44

Full specifications

Standard equipment

Optional equipment

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US system Metric

Working ranges

Hole size	114-216 mm
Single pass depth	6.7 m
Maximum depth
6 + 1 configuration	42.7 m
4 + 1 configuration	30.5 m
Hammers	102-203 mm
Drill pipe	102-127 mm

Hole size	4.5 to 8.5 in
Single pass depth	22 ft.
Maximum depth
6 + 1 configuration	140 ft.
4 + 1 configuration	100 ft.
Hammers	4.0 to 8.0 in
Drill pipe	4.0 to 5.0 in

Rotary head

Rotation head speed	116 rpm
Rotation head torque	5.4 kN-m

Rotation head speed	116 rpm
Rotation head torque	3,983 lbf.-ft.

Pipe handling

Carousel capacity
6 + 1 configuration	Pipe diameter less than or greater than 114 mm
4 + 1 configuration	Pipe diameter greater than114 mm

Carousel capacity
6 + 1 configuration	Pipe diameter less than or greater than 4.5 in
4 + 1 configuration	Pipe diameter greater than 4.5 in

Feed

Pull down force	53.4 kN
Pull back	53.4 kN
Boom position
Swing	Left 10 degrees/right 18 degrees
Tilt	10 degrees below to 35 degrees above horizontal
Mast position
Dump	+16 degrees to -45 degrees from vertical
Rotation pin #1	Left/right -20 degrees to +45 degrees from vertical
Rotation pin #2	Left/right +45 degrees to -5 degrees from horizontal

Pull down force	12,000 lbs.
Pull back	12,000 lbs.
Boom position
Swing	Left 10 degrees/right 18 degrees
Tilt	10 degrees below to 35 degrees above horizontal
Mast position
Dump	+16 degrees to -45 degrees from vertical
Rotation pin #1	Left/right -20 degrees to +45 degrees from vertical
Rotation pin #2	Left/right +45 degrees to -5 degrees from horizontal

Overall dimensions

Operating weight (maximum)	38 555 kg
Operating height, mast vertical	11.6 m
Shipping dimensions (height x weight x length)	3.51 x 2.89 x 13.05 m
Electrical	24 V
Electro-hydraulic control system	Variable displacement, load sensing pumps

Operating weight (maximum)	85,000 lbs.
Operating height, mast vertical	37 ft. 11 in
Shipping dimensions (height x weight x length)	138 x 114 in 138 x 114 x 514 in
Electrical	24 V
Electro-hydraulic control system	Variable displacement, load sensing pumps

Engine

Cummins QSK19, Tier 2
HP mode	570 kW
LP mode	597 kW
Cummins QSK19, Tier 4 final
HP mode	563 kW
LP mode	516 kW

Cummins QSK19, Tier 2
HP mode	764 HP
LP mode	800 HP
Cummins QSK19, Tier 4 final
HP mode	755 HP
LP mode	692 HP

Electrical and electro-hydraulic control system

Electrical	24V
Electro-hydraulic control system	Variable displacement pumps

Electrical	24V
Electro-hydraulic control system	Variable displacement pumps

Air compressor

HP mode	33.5 CMM @ 34.5 bar @ 1 800 rpm
LP mode	39.1 CMM @ 24.2 bar @ 2 100 rpm

HP mode	1,182 CFM/500 psi @ 1,800 rpm
LP mode	1,382 CFM/350 psi @ 2,100 rpm

Fluids and maintenance

Fuel capacity	886 L*
Cooling system	Radiator, compressor, ATAAC (air-to-air aftercooler)
Tank capacities	507 L hydraulic tank 1 060 L water tank

*Expanded 1,287 L (340 gal) capacity fuel tank available in 2024/25
**568 L water tank (150 gal) for use with dust collector available in 2024/25

Fuel capacity	234 US gal*
Cooling system	Radiator, compressor, ATAAC (air-to-air aftercooler)
Tank capacities	134 US gal hydraulic tank 280 gal water tank

*Expanded 1,287 L (340 gal) capacity fuel tank available in 2024/25
**568 L water tank (150 gal) for use with dust collector available in 2024/25

Lower works and propel

Travel auto two-speed	3 km/h
Oscillation	+/- 8 degrees
Traction force	222.4 kN
Ground clearance	381 mm
Gradeability	30% (17 degrees)

Travel auto two-speed	1.86 mph
Oscillation	+/- 8 degrees
Traction force	50,000 lbs.
Ground clearance	15 in
Gradeability	30% (17 degrees)

Cab

Heating capacity	13.48 kWh
Cooling capacity	9.7 kWh
Pressurized cabin	295 m³/h

ROPS/FOPS certified
<80dBA cab noise level
CANbus joystick controlled

Machine features

Automatic constant rotation power control
Centralized hydraulic test station
Hole alignment and depth system
Dual engine and compressor control
Wireless remote control for consumable changes
Pressure-less quick fuel system
4 infra-red night vision cameras for improved visibility
Fixed rock guard for main cabin and roof windows

Cab

Heating capacity	46,000 BTU
Cooling capacity	33,000 BTU
Pressurized cabin	174 cfm

ROPS/FOPS certified
<80dBA cab noise level
CANbus joystick controlled

Machine features

Automatic constant rotation power control
Centralized hydraulic test station
Hole alignment and depth system
Dual engine and compressor control
Wireless remote control for consumable changes
Pressure-less quick fuel system
4 infra-red night vision cameras for improved visibility
Fixed rock guard for main cabin and roof windows

Arctic package
Bolt-on external walkways
Dust collector
Rear stabilizer

Arctic package
Bolt-on external walkways
Dust collector
Rear stabilizer

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ZT44

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

Features and benefits

Dual-pressure air compressor

High tractive force and more

Four infrared night vision cameras

Compact design

Service accessibility

Optimum heat mitigation

Specifications for ZT44

Cab

Machine features

Cab

Machine features

Technology that works as hard as you do

Gallery

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