Komatsu offers a suite of innovative, forward-thinking hard rock products designed to help you productively and efficiently face the challenges posed by tough mining environments. Our extensive portfolio of hard rock mining equipment includes jumbo drills, bolters, drifters, LHDs and trucks. We also offer a full line of raiseboring tools and blasthole drilling tools. Our legacy products are currently being rebranded from Joy to Komatsu, but during the transition you’ll continue to be able to find information on all machines and equipment below.

The newest of those products are our small-class ZJ21 jumbo drill and ZB21 bolter, medium-class ZJ32Bi jumbo drill, and WX07 and WX04 load-haul-dump (LHD) products.

Learn more about our newest hard rock solutions.

Hard rock drilling conversions

Hard rock drilling conversions

  • Komatsu is the only OEM that offers a complete retrofit drilling solution
  • Drilling conversions are compatible with all major and most other OEMs
HC200

Montabert HC200

  • Super heavy duty drifter
  • Suitable for the largest diameter holes
  • Highest rotation torque in its class
HC95

Montabert HC95

  • The latest generation of Montabert drifters
  • Designed for optimal drill life span
  • The perfect tool to equip your drill rigs
HC28

Montabert HC28

  • Innovative design
  • Versatile and flexible
  • Light and powerful
Montabert, HC-170, Drifter

Montabert HC170

  • Heavy duty drifter
  • Suitable for large diameter holes
  • Very high rotation torque
Montabert, HC-112, Drifter

Montabert HC112

  • Optimized for long hole drilling
  • High efficiency ratio
  • Single-body drifter without tie rods
Montabert, HC-110, Drifter

Montabert HC110

  • The most powerful Montabert drifter for underground drilling
  • High efficiency ratio
  • Single-body drifter without tie rods
Montabert, HC-50, Drifter

Montabert HC50

  • Strong reputation in drilling industry with proven technology
  • Easy to adapt on any machine
  • Ready for any job
Montabert, HC-50, Drifter

Montabert HC109

  • Ready for surface and underground drilling
  • Suitable for both factory-new and existing machines
Montabert, HC-25, Drifter

Montabert HC25

  • Innovative design
  • Versatile and flexible
  • Light and powerful
Timberock bolter system

Timberock Bolter Systems

  • Designed to enhance your hard rock drilling operation with flexible and durable materials
  • Multi-carrier function means increased productivity as the bolter heads are set up for a variety of bolts
Timberock telescopic feed

Timberock Telescopic Feeds

  • Made to a variety of collapsible configurations including 6 ft – 10 ft, 8 ft – 12 ft, 10 ft – 14 ft
  • Customizable with several different options including hydraulic centralizer and heavy-duty feed cylinder for probe drilling
Timberock fixed feeds

Timberock Fixed Feeds

  • Lightweight, durable and cost effective
  • Maximize drifter performance through feeds designed to complement their performance

Hydraulic jumbo drills

Joy (former MTI), DR-1SB, Jumbo Drill

Joy DR-1SB

  • Boom coverage of 5.74 m by 7.10 m (18’8” by 23'3”)
  • Inner and outer turning radius’ of 3.9 m (12’9”) and 6.4 m (21'), respectively
Joy (former MTI), Vein Runner II, Jumbo Drill

Joy Vein Runner II

  • Boom coverage maximum of 5.1 m (height) by 5.77 m (wide) (16' 9"” by 18' 11")
  • Inner and outer turning radius’ of 3.05 m (10’0”) and 5.08 m (16’8”), respectively
Joy (former MTI), DR-2SB, Jumbo Drill

Joy DR-2SB

  • Boom coverage of 7.10 m by 8.90 m (23.3 ft by 29.2 ft)
  • Inner and outer turning radius' of 3658 mm (12.0 ft) and 6839 mm (21.0 ft), respectively
18HD-5

Joy 22HD

  • Switched reluctance hybrid drive captures and reuses braking energy
  • Heavy-duty design means less failures and more uptime
  • Bucket design allows easy filling and low wear
18HD-7

Joy 18HD

  • Simple control suite allows operator to concentrate on maximizing productivity
  • Automated control functions allow operator to perform complex operations at a button press
  • Switched reluctance hybrid drive captures and reuses braking energy
Joy 4LD loader

Joy 4LD

  • Rated load capacity of 4,000 kg (8,800 lbs.)
  • Ideal for narrow vein applications
Joy (former MTI), LT-1050, Loader

Joy LT-1051

  • Rated load capacity of 10,000 kg (22,000 lbs.)
  • Ideal for load-and-carry and truck-loading applications
LT-650 20

Joy LT-650

  • Rated load capacity of 6,591 kg (14,500 lbs.)
  • Ideal for narrow vein applications
LT-270 10

Joy LT-270

  • Rated load capacity of 2,722 kg (6,000 lbs.)
  • Ideal for narrow vein applications
Joy (former MTI), Shaft Jumbo Drill

Joy Shaft Jumbo Drill

  • Equipped with Montabert HC drifters for the lowest-in-class operating costs (up to 56.8% savings)
  • 360° rotation at top turret for maximized boom coverage
Joy (former MTI), VSM-14, Vertical Shaft Drill

Joy VSM-14

  • 4.3 m main cylinder stroke for increased coverage area and capacity
  • Self-cleaning main cylinder for improved reliability and safety
  • Lowest-in-class operating costs
7TD

Joy 7TD

  • Rated load capacity of 6,600 kg (14,520 lbs.)
  • Ideal for narrow vein applications
Joy (former MTI), DT-3504, Haulage Truck

Joy DT-3504

  • Rated load capacity of 31,751 kg (70,000 lbs.)
  • Designed for ground-level maintenance with no climbing
Joy (former MTI), 16TD, Trucks -1

Joy 16TD

  • Rated load capacity of 16,000 kg (35,300 lbs.)
  • Designed for ground-level maintenance with no climbing
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