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Blasthole drills P&H 77XR

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  • Bit range diameter of 7 7/8 to 10 5/8″ (200 to 270 mm)
  • Robust solid boxer style mast construction with a simple rack and pinion pulldown design to reduce maintenance effort while increasing drilling forces
  • Innovative automatic bit handling and pipe handling functions to improve safety and increase machine utilization
  • Intelligent compressor control, which manages power consumption and associated bailing velocity, to lower operating costs

The P&H 77XR blasthole drill, with 77,000 pounds of maximum bit loading capacity, can be configured for rotary or hammer drilling, diesel or electric power, and single- or multi-pass drilling. This machine is designed to deliver an up to 10% maintenance and repair cost advantage and up to 5% availability advantage.

Several other smart features are available for the drill to facilitate improved cycle times, including enhanced auto drill and electronic load sense control. The 77XR is compatible with our new high-precision GPS tele-remote operation console and automation solution, which includes features such as geo-fencing, auto navigation, obstacle detection and mitigation, Hawkeye 360 camera system, and more.

Designed for productivity

  • Single-pass angle drilling with automatic mast positioning and adaptive auto leveling allows operators to perform multiple functions with a single drill rig
  • Propel with mast and carriage up, enhanced auto drilling, and automatic pipe and bit handling reduce drilling cycle time
  • Auto navigation increases precision of hole location with drill pattern

Designed for ease of maintenance

  • Robust, solid mast construction with simple rack and pinion design reduces maintenance
  • Patented pipe handling liners aid collaring; horizontal mast storage extends life of drill string
  • Optional mast access service platform allows easier inspection and maintenance of mast and top portions of deck

Designed for zero harm

  • Major components are integrated  into the chassis for lower center of gravity and increased stability
  • Cab designed for improved visibility, increased lines of sight, noise reduction, and automatic dust suppression
  • “Point of use placement” for hydraulics places the tester next to the function for increased awareness

Working Ranges

 Hole diameter 200 mm to 270 mm  7 7/8 in. to 10 5/8 in.
 Maximum single pass 16.8 m 55 ft.
 Maximum multi-pass 73 m 240 ft.
 Maximum bit loading 34,925 kg 77,000 lbs.

Overall Dimensions

 Width, overall 5.43 m 17 ft. 10 in.
 Height, mast up 24.5 m 80 ft. 5 in.
 Height, mast down 7.0 m 23 ft. 0 in.
 Length, mast up 13.1 m 43 ft. 0 in.
 Length, mast down 24 m 78 ft. 9 in.
 Length, mast down (multipass) 19.95 m 65 ft. 5 in.
 Overall width of crawlers 4.12 m 13 ft. 6 in.
 Overall length of crawlers 7.02 m 23 ft. 0 in.
 Width of non-drill end jacks 1.4 m 4 ft. 7 in.
 Width of drill jacks 2.85 m 9 ft. 4 in.
 Length between jacks 7.14 m 23 ft. 5 in.
 Height to top of operators cab 4.36 m 14 ft. 4 in.

Operators cab

  • Window shades
  • Walk-around cab access
  • Microwave
  • Storage locker
  • AM/FM/WB/USB/iPad/iPhone/Satellite radio
  • DIN EN 15695 level cab filtration


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

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 weather package
  • Tool kit, drilling tools
  • 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-machine tele-remote control
  • Auto hole-to-hole navigation
  • Obstacle detection and mitigation
  • Hawkeye 360º camera system
  • Auto pipe changing
  • Auto mast positioning
  • Auto dust suppression
  • Adaptive auto level
  • Enhanced auto drill
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