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Rotary Drills

Building on the solid legacy of proven designs, today's Cat® Rotary Blasthole Drills offers substantial technology, efficiency and productivity improvements to efficiently reach your targeted productivity rates. Our newest models fully integrate Cat designs, components and technologies, and every model delivers exactly what you expect from a product bearing the Cat brand: durability, precision, productivity, and unmatched parts and service support, anywhere in the world. It’s what lies beneath the paint that counts — that’s where you’ll find everything we stand for.

MD6250 Rotary Blasthole Drill Specifications

  • Specification Summary

  • Bit Load 32 655 kg (71,993 lb)
  • Hole Diameter Up to 152-250 mm (Up to 6-9.8 in)
  • Engine C27 ACERT™ @ 1,800 rpm
  • Components Pipe loading guide roller
  • Product Brochure

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Product Details

Specifications

Bit Load 32 655 kg (71,993 lb)
Hole Diameter Up to 152-250 mm (Up to 6-9.8 in)
Engine C27 ACERT™ @ 1,800 rpm

Drill Table and Work Deck

Components Winch – variable speed drive with ≥ 1587 kg (3,500 lb) rating

Basic Specs

11.2 m (36.7 ft) mast: Hole diameter range Up to 152-250 mm (Up to 6-9.8 in)
11.2 m (36.7 ft) mast: Hole depth range – Single pass depth 11.2 m
11.2 m (36.7 ft) mast: Hole depth range – Multi-pass depth Up to 53.6 m (Up to 176.7 ft)
11.2 m (36.7 ft) mast: Pull-down capacity Up to 20 411 kg (Up to 45,000 lb)
11.2 m (36.7 ft) mast: Hoist capacity Up to 20 411 kg (Up to 45,000 lb)
11.2 m (36.7 ft) mast: Hoist speed 0.81 m/sec
11.2 m (36.7 ft) mast: Bit load 22321 kg
13.6 m (44.6 ft mast): Hole diameter range Up to 152-250 mm (Up to 6-9.8 in)
13.6 m (44.6 ft mast): Hole depth range – Single pass depth 13.6 m
13.6 m (44.6 ft mast): Hole depth range – Multi-pass depth Up to 37.9 m (Up to 124.6 ft)
13.6 m (44.6 ft mast): Pull-down capacity Up to 29 483 kg (Up to 65,000 lb)
13.6 m (44.6 ft mast): Hoist capacity Up to 22 113 kg (Up to 48,750 lb)
13.6 m (44.6 ft mast): Hoist speed 0.66 m/sec
13.6 m (44.6 ft mast): Bit load 32655 kg
U.S. EPA Tier 2 equivalent: Engine C27 ACERT @ 1,800 rpm
U.S. EPA Tier 2 equivalent: Emissions U.S. EPA Tier 2 equivalent
U.S. EPA Tier 2 equivalent: Rated horsepower 652 kW
U.S. EPA Tier 2 equivalent: Elevation capability 4750 m
U.S. EPA Tier 4 Final: Engine C27 ACERT @ 1,800 rpm
U.S. EPA Tier 4 Final: Emissions U.S. EPA Tier 4 Final
U.S. EPA Tier 4 Final: Rated horsepower 655 kW
U.S. EPA Tier 4 Final: Elevation capability 3658 m
Compressor, rotary drilling 56.6 m3/min (2,000 ft3/min) @ 8.6 bar (125 psi)
Compressors, DTH drilling 42.2 m3/min (1,500 ft3/min) @ 24.1 bar (350 psi)
Angle drilling 30° (in 5° increments)

Cooling

Components Variable speed fan control
Features Functional in ambient temperature of 52° C (125° F)

Hydraulics

Components Cat quick-connect test ports to check all systems

Climate Choices

Climate Level 1 (standard) Standard fluids and lubricants
Climate Level 2 Requires two additional batteries
Climate Level 4 Shore power connection box supports switchable 240-600 volt, 50 amp waterproof connection

Weights

Working weight range 56 468 kg to 64 154 kg (124,490 lb to 141,436 lb)

Engine Choices

U.S. EPA Tier 2 equivalent: Engine C27 ACERT @ 1,800 rpm
U.S. EPA Tier 2 equivalent: Emissions U.S. EPA Tier 2 equivalent
U.S. EPA Tier 2 equivalent: Rated horsepower 652 kW
U.S. EPA Tier 4 Final: Engine C27 ACERT @ 1,800 rpm
U.S. EPA Tier 4 Final: Emissions U.S. EPA Tier 4 Final
U.S. EPA Tier 4 Final: Rated horsepower 655 kW
Components Ether starting aid
Features Scheduled oil sampling (S∙O∙SSM)

Compressor Choices

DTH drilling Includes tool lubrication and hammer storage
DTH drilling: 1350 cfm/500 psi 38.2 m3/min (1,350 ft3/min) @ 34.4 bar (500 psi) includes 113 L (30 gal)
DTH drilling: 1500 cfm/350 psi 42.2 m3/min (1,500 ft3/min) @ 24.1 bar (350 psi) includes 113 L (30 gal)
Rotary drilling Includes lubrication system
Rotary drilling: 2000 cfm/125 psi 56.6 m3/min (2,000 ft3/min) @ 8.6 bar (125 psi) optional tool 113 L (30 gal)
Note Variable volume control in all compressor designs

Receiver Tank Choices

Choice High pressure 24.1 or 34.4 bar (350 or 500 psi) for ASME/CRN/AU or CE

Regulatory Compliance

Features Meets over 30 ISO standards

Frame

Features Lubrication system is centralized
Components Deck mounted jib crane with 750 kg (1,653 lb)

Access Choices

Choice Hydraulic access stairs to cab area with spring loaded self-closing gate. Includes tram interlock for when the ladder is down and cab perimeter walkway.

Undercarriage

Model Cat® 336E EL Excavator type
Ground clearance 618 mm
Carrier rollers Three single flange rollers
Track guiding guards Two
Gradeability 48% (26°)
Travel speed display 2 kph
Triple grousers 750 mm (29.5 in); for soft rock

Mast and Pipe Carousel Features

Features Pipe catcher; hydraulic or wire rope

Mast Packages: Standard or Premium Choices

11.2 m Mast: Single pass depth 11.2 m
11.2 m Mast: Multi pass depth Up to 53.6 m (Up to 176.7 ft)
11.2 m Mast: Pulldown – rated single cylinder pull-down/hoist system Up to 20 411 kg (Up to 45,000 lb)
11.2 m Mast: Hoist Up to 20 411 kg (Up to 45,000 lb)
11.2 m Mast: Mast accessories One hydraulic pipe catcher, pipe positioner, hydraulic operated bit basket (HOBB)
13.6 m Mast: Single pass depth 13.6 m
13.6 m Mast: Multi pass depth Up to 37.9 m (Up to 124.6 ft)
13.6 m Mast: Pulldown Up to 29 483 kg (Up to 65,000 lb)
13.6 m Mast: Hoist Up to 22 113 kg (Up to 48,750 lb)
13.6 m Mast: Mast accessories One wire rope, one hydraulic pipe catchers, pipe positioner, hydraulic operated bit basket (HOBB)
Angle drilling Available with any mast

Carousel and Pipe (Mast size dependent)

Pipe quantity: 13.6 m (44.6 ft) mast carousel; takes quantity of 4 × 7.6 m (20 ft) pipes (37.9 m (124.6 ft) total depth)
Pipe diameters – rotary drilling: Rotary 193 mm
Pipe diameters – rotary drilling: Rotary or DTH 178 mm
Pipe diameters – DTH drilling: DTH 165 mm
Pipe diameters – DTH drilling: DTH or Rotary 178 mm

Tool Package Rotary

Components Lifting bails (available on request; required for commissioning)

Tool Package DTH

Components Lifting bails (available on request; required for commissioning)

Overhead Winch System

Capacity rating 1587 kg
Cable diameter 13 mm
Variable speed reach – past the drill deck 6.1 m

Rotary Head Top Drive System

Torque, single motor 11600 N∙m
Rotation speed 0-160 rpm

Operator Environment

Components Two swing out doors and Cat keyed locks
Seating: – Seat cover in fabric, or a leather option with heat and cooling – Seat swivels, locks and has two point/76 mm (3 in) seat belt, tilts (5° adjustment), lumbar support, fore/aft seat adjustment 80 mm (3.1 in) – Trainer’s seat with seat belt
Windows: – Windows on every wall, full length window to view drill deck, hinged steel window guard, single or double pane glass – Sun screens for main windows – Windshield wipers with a common washer tank – Defogging HVAC vents
Lighting: – Cab lights over the seat; separate reading light, and backlit joysticks and keypads – Flood lights for the drill perimeter – Spot lights for power group area; drill deck; mast carousel; access ladder and walkways – Standard lighting is 2,100 lumens flood light on perimeter, area spot lights have 1,950 lumens – Upgrade lighting is 4,200 lumens per flood light on perimeter – Mast clearance lights, cab mounted strobe, front mounted tram beacon
HVAC: – Floor vent in the foot rest area – Roof-mounted air conditioner/heating/pressurizing unit – Filter access from deck, 500 service interval, HEPA filters are available
Cameras: – Mounted on the front and left sides to provide 360° view from operators’ seat – Camera on the mast to view pipe carousel/top drive operation

Operating System Controls (Standard)

Components Auto raise front and rear dust curtains lifting system with gravity down

Premium Controls

Components Auto drill single pass

Automation Technology

Type Autonomous ready
Cat Terrain for Drills – Mining System Interface – Production – Strata – Navigation
Component Wiring for third party interface

Dust Control Choices

Water injection – tank mounted below front deck 127 L
Choices Water pump interlock
Water injection and dust collector Self-cleaning filters, dust chute clean-out door
High volume water injection (maximum) – tanks total capacity 2786 L
Tank above deck – capacity (isolated for extreme cold weather) 1514 L
Tank below deck – capacity 1271 L

Safety and Security

Feature Fire suppression ready
Components Lifting lugs
Manual Printed copy of the operation and maintenance manual

Service Packages

Package Premium – Service center for lubricants drain and fill of compressor, hydraulic tank and pump drives, fast fill fuel and water, Auto lube, and blowdown hose

Dimensions (Approximate) – 11.2 m (36.7 ft) Mast

Width front 5.624 m
Width rear 4.819 m
Height mast up 17.011 m
Body length 11.708 m
Length mast down 17.721 m

Dimensions (Approximate) – 13.6 m (44.6 ft) Mast

Width front 5.624 m
Width rear 4.819 m
Height mast up 19.460 m
Body length 11.708 m
Length mast down 20.170 m

Auxiliary Controls

Components Drill operation remote control for tram, setup and drill controls from ground in line of sight
  • FRAME
    •  Fuel tank expansion of +1609 L (425 gal) for total of 3218 L (850 gal) (option) required for autonomy packages
    •  Fire suppression ready (includes platform on non-drill end to mount bottles, and frame around power train to mount nozzles)
  • MAST
    •  Overhead winch with remote; variable speed drive with ≥ 1818 kg (4,000 lb) rating, length to reach 6 m (20 ft) past drill deck (option)
    •  Tool oiler, 113 L (30 gal) oil injection system for Rotary Drilling
  • SERVICE TOOLS
    •  Bushing retention tool – 89 to 152 mm (3.5 to 6.0 in) pipe diameter
    •  Lifting bails (available on request; required for commissioning)
    •  API thread 89 mm (3.5 in)
    •  API thread 114 mm (4.5 in)
    •  API thread 140 mm (5.5 in)
    •  BECO thread 101 mm (4 in) for 140 mm (5.5 in) pipe
    •  BECO thread 114 mm (4.5 in) for 152 mm (6.0 in), 165 mm (6.5 in), 178 mm (7.0 in) pipe
  • Bushing retention tool – 89 to 152 mm (3.5 to 6.0 in) pipe diameter
    • Lifting bails (available on request; required for commissioning)
      • API thread 89 mm (3.5 in)
        • API thread 114 mm (4.5 in)
          • API thread 140 mm (5.5 in)
            • BECO thread 101 mm (4 in) for 140 mm (5.5 in) pipe
              • BECO thread 114 mm (4.5 in) for 152 mm (6.0 in), 165 mm (6.5 in), 178 mm (7.0 in) pipe
                • OPERATOR ENVIRONMENT
                  •  Fold up trainer’s seat with seat belt
                  •  Manometer pressure gauge
                  •  Window guard
                  •  Window shades
                • TECHNOLOGY PRODUCTS
                  •  Product Link Elite; satellite, cellular or dual
                • DUST SUPPRESSION
                  •  Dust curtain hydraulic lifters raise front and rear dust curtains (recommended with dust collector)
                  •  Tram off spray system
                • Dust curtain hydraulic lifters raise front and rear dust curtains (recommended with dust collector)
                  • Tram off spray system
                    • DRILL PIPE
                      •  7.6 m (20 ft) pipes 13.6 m (44.6 ft) Mast – Requires quantity of four (4)<br>– Rotary 127 mm (5 in)<br>– Rotary 152 mm (6 in)<br>– Rotary 178 mm (7 in)<br>– Rotary 193 mm (7.625 in)<br>– DTH
                      •  10.6 m (35 ft) pipes 11.2 m (36.7 ft) Mast – Requires quantity of four (4)<br>– Rotary 127 mm (5 in)<br>– Rotary 152 mm (6 in)<br>– Rotary 178 mm (7 in)<br>– Rotary 193 mm (7.625 in)<br>– DT
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