2025 Komatsu Blasthole Drills ZR77

Information

2025 Komatsu Blasthole Drills ZR77

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.

Features may include:

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.
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.

Photos

Highlights

  • Bushnell, Florida
  • 2025
  • Komatsu
  • Blasthole Drills ZR77
  • Available
  • Mast: 39.4 in

Specifications

  • 2025
  • Komatsu
  • Blasthole Drills
  • ZR77
  • Track
  • Non-reg. T2 and T4
  • 1,050 HP
  • (variable) at 100 rpm 11,000 ft.-lbs.
  • Variable displacement axial piston with integral brake
  • Rated power: 212
  • Standard output: 2,000 CFM | DTH output (standard): 1,500 CFM @ 350 psi | Pulldown force: 67,900 lbf. | Hoisting force: 67,900 lbf. | Travel stability-mast down, drill string engaged: 15° (26%) | Travel stability-mast up, drill string engaged: 9° (15%)
  • Operating: 100 psi
  • Carriage speed (maximum): 0 to 157.5 ft./min | Speed (variable): 200 rpm @ 5,500 ft.-lbs. | Low propel speed: 0-1.16 mph | High propel speed: 0-1.94 mph
  • with standard shoe: 18.3 psi
  • Hole diameter: 7 7/8 to 10 5/8 in | Maximum single pass: 55 ft. | Maximum multi-pass: 280 ft. | Carriage/rotary head travel: 62.5 ft. | Angle drilling (option): 5° increments | Diameter Pipe Size 4 / Pipe Size 5 /Pipe Size 6: 8 5/8 in. or less / 8 5/8 in. or less /7 5/8 in. or less
  • Mast (single pass) (multi-pass): 75.0 ft. 61.0 ft.
  • Mast: 39.4 in
  • Mast: 39.5 in | Maximum Pipe Size 4 / Pipe Size 5 /Pipe Size 6:
  • Shoe pad (standard): 29.5 in
  • Maximum bit: 77,000 lbs. | Maximum bit: 77,000 lbs.
  • Mast raising cylinders: Hydraulic | Compressor type: Rotary screw, oil flooded | Compressor control: Electrically actuated, CANbus
  • 400 gal
  • 400 gal
  • 300 gal
  • OGL tank capacity: 18 gal
  • Mast: Structural plate steel