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Blasthole drill

ZR77

  • Hole diameter 200 - 270 mm 7 7/8 - 10 5/8 in
  • Bit loading 34 925 kg 77,000 lbs.
  • Single pass hole depth 16.8 m 55 ft.

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. With maximum bit-loading ranges from 77,000 to 150,000 lbs. (68,039-34,927 kg) Komatsu offers a range of rotary drills for a variety of capacities and applications.

  • Increase drilling time as much as 12%
  • 77,000 lbs. of maximum bit-loading capacity
  • Improve availability by 2-5%
  • Reduce maintenance costs by 5-10%

Features and benefits

Robust, solid boxer-style mast construction

To help reduce maintenance time and increase structural reliability, we've engineered an innovative solid boxer style mast.

Intelligent compressor control

This smart feature allows the operator to regulate the amount of air into the hole and helps manage power and fuel consumption. Effectively manage associated bailing velocity as well, which can help lower operating costs.

Auto-bit handling

The innovative auto-bit carousel helps to reduce bit change downtime. This feature also helps to flex into a new hole diameter quickly so operators can seamlessly adapt the drill pattern to quickly reach optimal fragmentation.

Drill automation system with remote control operation

Increase drill utilization, helping to reduce operator inefficiencies and overdrilling. Single and multiunit high-precision GPS (HPGPS) remote control operation for effective control.

Auto navigation capability with high-precision GPS (HPGPS)

This feature increases the precision of hole locations within drill patterns to elevate productivity. It also allows the movement of the drill between holes without the operator inside the cab.

Single and multipass angle drilling

The versatility to allow operators to perform multiple functions with a single drill rig with automatic mast positioning and adaptive auto-leveling.

Specifications for ZR77

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US system Metric
Working ranges
Hole diameter 200 to 270 mm
Maximum single pass 16.8 m
Maximum multi-pass 85 m
Maximum bit loading 34 925 kg
Hole diameter 7 7/8 to 10 5/8 in 
Maximum single pass 55 ft.
Maximum multi-pass 280 ft.
Maximum bit loading 77,000 lbs.
Mast/tower
Mast construction Structural plate steel
Mast raising cylinders Hydraulic (2x)
Carriage/rotary head travel 19.1 m
Maximum bit loading 34 925 kg
Mast length
(single pass)
(multi-pass)

22.9 m
18.6 m
Mast width 1.0 m
Mast depth 1.0 m
Angle drilling (option) 0-30°
Mast construction Structural plate steel
Mast raising cylinders Hydraulic (2x)
Carriage/rotary head travel 62.5 ft.
Maximum bit loading 77,000 lbs.

Mast length
(single pass)
(multi-pass)


75.0 ft.
61.0 ft.
Mast width 39.4 in
Mast depth 39.5 in
Angle drilling (option) 5° increments
Air system
Compressor type Rotary screw, oil flooded
Standard output 56.6 m3/min
Operating pressure 6.89 bar
Optional output 76.5 m3/min
Operating pressure 6.89 bar
DTH output  
(standard) 42.5 m3/min @ 24.13 bar
(optional) 42.5 m3/min @34.50 bar
Compressor control Electrically actuated, CANbus
Compressor type Rotary screw, oil flooded
Standard output 2,000 CFM
Operating pressure 100 psi
Optional output 2,700 CFM
Operating pressure 100 psi
DTH output  
(standard) 1,500 CFM @ 350 psi
(optional) 1,500 CFM @ 500 psi
Compressor control Electrically actuated, CANbus
Pipe handling

Type

Single-pass: 2 pipe carousel for 33.5 m total depth
Multi-pass: Up to a 6 pipe rotary carousel 85 m total depth

Pipe size      
  Carousel capacity  Diameter Maximum depth

4

219 mm or less 8 5/8 in. or less 61 m
5 219 mm or less 8 5/8 in. or less 73 m
6 194 mm or less 7 5/8 in. or less 85 m
Options
Ability to handle 25 ft. pipe

Type

Single-pass: 2 pipe carousel for 110 ft. total depth
Multi-pass: Up to a 6 pipe rotary carousel 280 ft. total depth

Pipe size      
  Carousel capacity  Diameter Maximum depth

4

219 mm or less 8 5/8 in. or less 200 ft.
5 219 mm or less 8 5/8 in. or less 240 ft.
6 194 mm or less 7 5/8 in. or less 280 ft.
Options
Ability to handle 25 ft. pipe
Fluids/maintenance
Fuel tank capacity (standard) 1 514 L
Fuel tank capacity (optional) 2 366 L
Water tank capacity (standard) 1 514 L
Hydraulic tank capacity 1 136 L
OGL tank capacity 68 L
Ground level battery and starter isolation
Quick fluid service system (fuel, hydraulic, engine oil, coolant, compressor oil, grease and water) at ground level
Live oil sampling
Fuel tank capacity (standard) 400 gal
Fuel tank capacity (optional) 625 gal
Water tank capacity (standard) 400 gal
Hydraulic tank capacity 300 gal
OGL tank capacity 18 gal
Ground level battery and starter isolation
Quick fluid service system (fuel, hydraulic, engine oil, coolant, compressor oil, grease and water) at ground level
Live oil sampling
Feed system
Type Rack and pinion
Pulldown force 302 kN
Hoisting force 302 kN
Carriage speed (maximum) 0 to 48.0 m/min
Motor type (hydraulic) Variable displacement axial piston with integral brake
Type Rack and pinion
Pulldown force 67,900 lbf.
Hoisting force 67,900 lbf.
Carriage speed (maximum) 0 to 157.5 ft./min
Motor type (hydraulic) Variable displacement axial piston with integral brake
Power unit
Diesel engine/model Cummins QST30
Power rating 783 kW
Electric option ≥3-phase altering current
Secondary voltage (≥24, 12)
Diesel engine/model Non-reg. T2 and T4
Power rating 1,050 HP
Electric option 6.3 kv
Rotary head
Rated power 158 kW
Torque (variable) at 100 rpm 14.9 kN-m
Speed (variable) 200 rpm @ 5 500 ft.-lbs.
Motor type (hydraulic) Variable displacement axial piston
Rated power 212
Torque (variable) at 100 rpm 11,000 ft.-lbs.
Speed (variable) 200 rpm @ 5,500 ft.-lbs.
Motor type (hydraulic) Variable displacement axial piston
Dust control
Dust curtains (standard)
Electric actuator for dust curtains (optional)
Water injection system (standard)
Preheat system (for water injection)
Dry dust collector (optional)
Dust curtains (standard)
Electric actuator for dust curtains (optional)
Water injection system (standard)
Preheat system (for water injection)
Dry dust collector (optional)
Lower works and propel
Crawler type B8 excavator-type
Motor type Two-speed, variable displacement piston
Low propel speed 0-1.86 kph
High propel speed 0-3.12 kph
Travel stability-mast down, drill string engaged 15° (26%)
Travel stability-mast up, drill string engaged 9° (15%)
Shoe/track pad width (standard) 750 mm
Shoe/track pad width (optional) 900 mm
Ground pressure with standard shoe 126 kPa
Crawler type B8 excavator-type
Motor type Two-speed, variable displacement piston
Low propel speed 0-1.16 mph
High propel speed 0-1.94 mph
Travel stability-mast down, drill string engaged 15° (26%)
Travel stability-mast up, drill string engaged 9° (15%)
Shoe/track pad width (standard) 29.5 in
Shoe/track pad width (optional) 35.4 in
Ground pressure with standard shoe 18.3 psi
DTH drilling
  • Up to 203 mm Down-the-hole hammer with 229 mm maximum bit diameter
  • Up to 8 in Down-the-hole hammer with 9 in maximum bit diameter

Operators cab

  • Air suspended operators seat
  • DIN EN 15695 level cab filtration
  • FOPS level II
  • HVAC with pressurizer
  • Interior and exterior LED lighting
  • Sound level rating of 62 dB(A) or less
  • Trainer/buddy seat
  • Window tint

Lighting

  • LED lighting

Drill deck

  • Boarding stairs

Lubrication

  • Automatic lubrication (machinery)
  • Centralized lubrication

Operators cab

  • Air suspended operators seat
  • DIN EN 15695 level cab filtration
  • FOPS level II
  • HVAC with pressurizer
  • Interior and exterior LED lighting
  • Sound level rating of 62 dB(A) or less
  • Trainer/buddy seat
  • Window tint

Lighting

  • LED lighting

Drill deck

  • Boarding stairs

Lubrication

  • Automatic lubrication (machinery)
  • Centralized lubrication

Operators cab

  • Window shades
  • Window wipers
  • Walk around cab access
  • Microwave
  • Refrigerator
  • Storage locker
  • AM/FM/WB/USB/iPod/iPhone/Satellite radio
  • Deluxe trainer's seat

Lubrication

  • Centralized fluid fill and drains
  • Preheat system (auto lube)
  • Extended maintenance interval filtration
  • Bit lubrication
  • Hammer lubrication
  • Auto lubrication system

Compliance

  • MDG, AU compliant
  • EU compliant
  • Russian compliant

Drill deck

  • Boarding ramp (main access only)
  • Auxiliary power unit (APU)
  • Preheat system (for APU)
  • Radio remote control (propel and leveling)
  • Mast access platform
  • Cold and Arctic weather package
  • Tool kit, drilling tools
  • Tool kit, maintenance
  • Storage locker/job box
  • Machinery area enclosure
  • Engine cover, rain guard
  • Additional sound suppression
  • Pressure washer
  • Deck crane option

Drill automation

  • High precision GPS navigation
  • Single- and multi-machine tele-remote control
  • Auto hole-to-hole navigation
  • Obstacle detection and mitigation
  • Quadview Camera System
  • Auto pipe handling
  • Auto mast positioning
  • Auto dust suppression
  • Adaptive auto level
  • Enhanced auto drill
  • Stratification modeling
  • Data interface compatible
  • Auto bit changer

Operators cab

  • Window shades
  • Window wipers
  • Walk around cab access
  • Microwave
  • Refrigerator
  • Storage locker
  • AM/FM/WB/USB/iPod/iPhone/Satellite radio
  • Deluxe trainer's seat

Lubrication

  • Centralized fluid fill and drains
  • Preheat system (auto lube)
  • Extended maintenance interval filtration
  • Bit lubrication
  • Hammer lubrication
  • Auto lubrication system

Compliance

  • MDG, AU compliant
  • EU compliant
  • Russian compliant

Drill deck

  • Boarding ramp (main access only)
  • Auxiliary power unit (APU)
  • Preheat system (for APU)
  • Radio remote control (propel and leveling)
  • Mast access platform
  • Cold and Arctic weather package
  • Tool kit, drilling tools
  • Tool kit, maintenance
  • Storage locker/job box
  • Machinery area enclosure
  • Engine cover, rain guard
  • Additional sound suppression
  • Pressure washer
  • Deck crane option

Drill automation

  • High precision GPS navigation
  • Single- and multi-machine tele-remote control
  • Auto hole-to-hole navigation
  • Obstacle detection and mitigation
  • Quadview Camera System
  • Auto pipe handling
  • Auto mast positioning
  • Auto dust suppression
  • Adaptive auto level
  • Enhanced auto drill
  • Stratification modeling
  • Data interface compatible
  • Auto bit changer
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