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

View all specs

Request a quote

Download brochure Download spec sheet

Overview
Specifications
Gallery

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

Close all Expand all

US system Metric

Working ranges

Hole size	140 to 216 mm
Hammers	102 to 203 mm
Drill pipe	102 to 140 mm

Hole size	5.5 to 8.5 in
Hammers	4.0 to 8.0 in
Drill pipe	4.0 to 5.5 in

Rotary head

Rotation head torque

7.5 kN-m

Rotation head speed	0 to 99 rpm
Rotation head torque	5,539 lbf.-ft.

Pipe handling

Carousel capacity

114 mm diameter pipe for 6 pipe carousel + 1 under head
127 mm diameter pipe for 4 pipe carousel + 1 under head

Carousel capacity

4.5" diameter pipe for 6 pipe carousel + 1 under head
5" diameter pipe for 4 pipe carousel + 1 under head

Feed

Pull down force	53.4 kN
Pull back	53.4 kN
Single pass depth	6.1 m
Maximum depth	42.7 m. (6 + 1) 30.5 m (4 + 1)
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

Pull down force	12,000 lbs.
Pull back	12,000 lbs.
Single pass depth	20 ft.
Maximum depth	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

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

Power unit

Engine

Cummins QSK 19, Tier 2
HP mode	570 kW
LP mode	597 kW
Cummins QSK 19, Tier 4f
HP mode	574 kW
LP mode	597 kW

Air system

Air compressor, Sullair 20/12 (1150)

HP mode	32.9 CMM @ 34.5 bar @ 1 800 rpm
LP mode	38.5 CMM @ 24.2 bar @ 2 100 rpm

Fluids/maintenance

Fuel capacity	1 022 L
Cooling system	Radiator, compressor, ATAAC (Air to Air After Cooler)
Tank capacities	507 L hydraulic tank 1 060 L water tank

Lower works and propel

Travel auto 2 speed	3 kph
Oscillation	± 8°
Traction force	222.4 kN
Ground clearance	38.1 mm
Gradeability	30%

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

Power unit

Engine

Cummins QSK 19, Tier 2
HP mode	764 HP
LP mode	800 HP
Cummins QSK 19, Tier 4f
HP mode	770 HP
LP mode	800 HP

Air system

Air compressor, Sullair 20/12 (1150)

HP mode	1,160 CFM/500 psi @ 1,800 rpm
LP mode	1,360 CFM/350 psi @ 2,100 rpm

Fluids/maintenance

Fuel capacity	270 gal
Cooling system	L&M Mesabi
Tank capacities	134 gal 280 gal

Lower works and propel

Travel auto 2 speed	1.86 mph
Oscillation	± 8°
Traction force	50,000 lbs.
Ground clearance	15 in
Gradeability	17°

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

Gallery

Images

Videos

360° Views

More than a drill: Creating partnerships through customer relationships and reliable products

Building trusted partnerships takes more than a great product. Learn how customer feedback from our current track drill offering is helping guide the development of our newest track drill.
The versatility you need for the productivity you demand

When you need the lowest cost per meter drilled and blasted, Komatsu rotary drills deliver. Featuring rugged and reliable rotary carriages and enclosed boxer style masts, these machines provide ample torque and bit loading through the tough rock conditions.
The reliability you need for the productivity you demand

When you need the lowest cost per meter drilled and blasted, Komatsu rotary drills deliver. Featuring rugged and reliable rotary carriages and enclosed boxer style masts, these machines provide ample torque and bit loading through the tough rock conditions.
The serviceability you need for the productivity you demand

When you need the lowest cost per meter drilled and blasted, Komatsu rotary drills deliver. Featuring rugged and reliable rotary carriages and enclosed boxer style masts, these machines provide ample torque and bit loading through the tough rock conditions.