Blasthole drilling rig 320XPC

crawlerrotaryelectric

Overview
The Komatsu 320XPC is an ultra-class rotary blasthole drill engineered for high-volume hard-rock mining applications. Combining a rack-and-pinion electric pulldown, integrated electric systems and heavy-duty undercarriage, the 320XPC is designed to deliver consistent penetration, simplified maintenance and strong integration with large shovels for optimized drill-and-load cycles.

Key product highlights

• Rack-and-pinion drive delivering consistent torque and up to 122,000 lbs weight on bit for faster blast cycles.
• Integrated electric rotary, pulldown, compressor and pump systems to reduce fuel complexity and maintenance.
• Ground-level service access, centralized lubrication and wide walkways for safer, faster servicing.
• Designed to pair with large shovels (example: P&H 4100XPC) for high-production drill-and-load operations.

Features and benefits

• Powerful pulldown: Electric top-drive rack-and-pinion pulldown provides positive bit loading and precise transmission of force.
• Rugged masts: Lattice mast in high-strength alloy steel for fatigue resistance and stable drill-string support.
• Superior propulsion: Heavy-duty crawlers with hydrostatic propel drives for maneuverability, gradeability and fast set-ups.
• Reliable compressors: Mining-duty compressor options sized to meet bailing air requirements.
• Operator visibility: Wide operator view with windows and video systems; swiveling chair for repositioning during propel.
• Productive operator environment: FOPS Level II cab, shatter-resistant glass, ergonomic controls, adjustable air-seat suspension and vibration mitigation.
• Easy-access deck design: Wide exterior/interior walkways and large rear deck for bit and pipe changes.
• Advanced diagnostics: Centurion electrical control system with sensors and I/O for precise monitoring and troubleshooting.
• PreVail RHM: Machine health and performance data solution for actionable insights.
• Cold-climate and high-altitude capability: Options for arctic operation and configurations to maintain performance above 4,250 m (14,000 ft).
• Weak-grid protection (optional): Soft-start transformer option to reduce inrush current on weak power systems.

Resources

• Brochure (English)
• 320XPC spec sheet
• 320XPC sell sheet

Technical specifications

• Product category: Blasthole drills — Rotary drill
• Model / Commercial designation: 320XPC
• Hole diameter (in): 10 5/8 - 17 1/12
• Hole diameter (mm): 270 - 444
• Maximum bit loading: 68,083 kg (approx.) / 150,000 lbs
• Bit loading (kg) (listed in page items): 68,038 (see detailed specs)
• Single pass hole depth (ft): 65
• Single pass hole depth (m): 19.8
• Maximum single pass optional: 70 ft (21.3 m)
• Maximum multi-pass (single pipe rack): 39.6 m (130 ft)
• Maximum multi-pass (dual pipe rack): 59.4 m (195 ft)
• Operating weight (maximum): 181,437 kg / 400,000 lbs
• Shipping weight with masts: 153,949 kg / 339,400 lbs
• Crawler type: Heavy-duty lug and tumbler drive system (Komatsu design)
• Shoe / track pad width (standard): 36 in (914 mm)
• Shoe / track pad width (optional): 44 in (1,117 mm)
• Propel machinery: Dual hydrostatic planetary drive with sprint set, hydraulic release brake — 231 kW (310 HP)
• High propel speed: 0–0.97 kph (60 Hz) / 0–1.6 kph (60 Hz)
• Maximum grade: 20%
• Take-up adjustment: Jack and shim
• Air system type: Sullair oil-flooded screw
• Air system filter type: Dual Donaldson 2-stage dry type (Gardner Denver) or three Donaldson 2-stage dry type (Sullair)
• Standard air output (nominal): 3,450 CFM* (requires 1,000 HP main motor for that output)
• Compressor type: Gardner-Denver SSY Series oil-flood screw type (options available)
• Air operating pressure: 65 psi (448 kPa)
• Operator cab climate control: Mine air systems HVAC unit available providing pressurization and filtration
• Operator cab controls: PLC controlled, backlit for night operation
• Falling object protection: FOPS Level II
• Glazing: Shatter-resistant laminated glass on all sides, roof window with guard
• Operator cab noise: <80 dB while driving
• Operator cab type: Rear mounted with vibration and noise suppression; includes air-suspended seat, trainer seat, mini fridge, window tint and LED lighting
• Pipe handling type: Parallelogram style pipe rack; one rack standard (additional rack option up to two)
• Pipe diameter: 9.25 - 13.625 in (235 - 346 mm)
• Pipe handling options: Additional pipe rack, up to two total
• Auxiliary winch: 14,000 lbs (6,350 kg)
• Breakout wrench: P&H SureWrench
• Mast construction: Lattice type using alloy steel structural shapes
• Mast length (standard): 65 ft (19.81 m); optional: 70 ft (21.3 m)
• Mast raising / lowering: Two hydraulic cylinders, standard diameter 267 mm (10.5 in)
• Rotary machinery design: Dual DC P&H electric motors, independent ABB DCS 880 drives (master/follower); can run single motor for service
• Rotation speed: 0–119 rpm
• Maximum torque: up to 33,895 N·m (up to 25,000 ft·lbs)
• Main drive motor (standard): 522 kW (700 HP)
• Main drive motor (optional): 746 kW (1,000 HP)
• Electrical system features: Minimum 1.5 MVA continuous, 6 MVA minimum short circuit at drill; external disconnect at trailing cable junction, high-voltage load break disconnect and vacuum contactor
• Hoist / pulldown design: DC electric motor driven chainless rack and pinion design
• Drill feed speed: Up to 16 ft/min (up to 4.9 m/min)
• Hoist speed: Up to 105 ft/min (up to 37.0 m/min)
• Hoist/pulldown drive: Electric chainless rack & pinion
• Hydraulic system: Auxiliary open-loop vane pump for mast raising, leveling and pipe handling; main system closed-loop dual variable-displacement piston pumps; filtration includes 3‑micron and 5‑micron filters and magnetic suction strainers
• Lighting: Standard LED floodlights for work area
• Leveling jacks: Four cylinders — 254 mm diameter x 1,676 mm stroke
• Auto level: Standard
• Jack pads (standard): Diameter 30 in (762 mm); ground pressure (standard) 129 psi (840 kPa)
• Jack pads (optional): Diameter 50 in (1,270 mm); ground pressure (optional) 46 psi (317 kPa)
• Weights & ground bearing pressures: With 36 in shoes: 29.0 psi; with 914 mm shoes: 200 kPa; with 44 in shoes: 22.6 psi
• Centurion electrical control: Supervisory controller with Profibus I/O, GUI displays, PreVail RHM-ready provisions for machine health and performance data