MD6290 Rotary Blasthole Drill

Specifications

Bit Load: up to 23 733 kg (up to 52,321 lb)
Hole Diameter: 152 - 250 mm (6.0 - 9.875 in)
Engine: C15 ACERT - 403 kW (540 hp) at 2,100 rpm
Multi-Pass Hole Depth (10 m Mast): Up to 52.7 m (173 ft)
Multi-Pass Hole Depth (11 m Mast): Up to 32.3 m (106 ft)
Multi-Pass Hole Depth (8 m Mast): Up to 45.1 m (148 ft)
Single-Pass Hole Depth (10 m Mast): Up to 10.1 m (33 ft 2 in)
Single-Pass Hole Depth (11 m Mast): Up to 11.0 m (36 ft)
Single-Pass Hole Depth (8 m Mast): Up to 8.6 m (28 ft 2 in)
Working Weight: 120152.0 lb

Rated Capacity

Depth multi-pass (10 m/32 ft 9¾ in mast): Up to 52.7 m (Up to 173 ft 0 in)
Depth multi-pass (8 m/26 ft 3 in mast): Up to 45.1 m (Up to 148 ft 0 in)
Depth single-pass (10 m/32 ft 9¾ in mast): Up to 10.1 m (Up to 33 ft 2 in)
Depth single-pass (11 m/36 ft 0 in mast): Up to 11.0 m (Up to 36 ft 0 in)
Depth single-pass (8 m/26 ft 3 in mast): Up to 8.6 m (Up to 28 ft 2 in)
Bit/hole diameter: 152-250 mm (6-9.875 in)
Depth multi-pass (10 m/32 ft 9¾ in mast): Down to 52.7 m (Down to 173 ft 0 in)

Operating Temperature

Altitude: Up to 4572 m (Up to 15,000 ft)
Minimum ambient rating (standard): -20.0 ° F
Cold weather package option: -40.0 ° F
Maximum ambient rating (standard): 125.0 ° F

Pull-down/Hoisting Capacity

Cable sheaves (cylinder) – outside diameter: 16.0 in
Cable sheaves (top and bottom) – outside diameter: 22.0 in
Cylinder bore – diameter: 7.0 in
Cylinder rod – diameter: 5.0 in
Head travel (11 m/36 ft 0 in mast): 492.0 in
Head travel (8 m/26 ft 3 in mast): 404.0 in
Number of cylinders: 1
Pull-down cylinder stroke (10 m/32 ft 9¾ in mast): 232.0 in
Pull-down cylinder stroke (11 m/36 ft 0 in mast): 246.0 in
Pull-down cylinder stroke (8 m/26 ft 3 in mast): 202.0 in
Sheave guards: Standard at bottom plate
Type: Open-loop, hydraulic (stationary barrel, moving rod)
Bit load force: Up to 23 733 kg (Up to 52,321 lb)
Cable type – 25 mm (1 in): DYFORM 8
Feed rate: 0-44.8 m/min (0-147 ft/min)
Head travel (10 m/32 ft 9¾ in mast): 464.0 in
Rated hoist capacity: Up to 21 364 kg (Up to 47,100 lbf)
Rated pull-down capacity: Up to 27 216 kg (Up to 60,000 lbf)
Retract rate: 0-46.6 m/min (0-153 ft/min)

Rotary Drive System

Drive motor: See Hydraulic System
Gearbox: Casting design
Horsepower capacity: 182 hp
Gearing: Straight spur
Lubrication: Oil flooded
Main thrust bearing: Taper roller
Ratio: 16:1
Rotation speed: 0-220 rpm
Torque: 0-12 880 N·m (0-9,600 lbf-ft)

Mast

Construction: ASTM 500 grade B rectangular tubing, welded
Hose rack: Sheet steel trough for moving hoses
Hydraulic lines: Pressure-rated steel hydraulic tubing
Main chord size – Front: 203 mm × 102 mm × 6 mm (8 in × 4 in × 0.25 in)
Main chord size – Rear: 102 mm × 102 mm × 13 mm (4 in × 4 in × 0.5 in)
Pivot and raising area: Rectangular tubing A frame; reinforced in high-stress areas
Table hole diameter (diameter deck hole for guide bushing): 11.0 in

Mast – Elevating Cylinders

Cylinder bore diameter: 7.0 in
Cylinder connection pins diameter: 1.75 in
Cylinder rod diameter: 3.5 in
Cylinder stroke: 38.0 in
Lift capacity each cylinder: 105800.0 lb
Number of cylinders: 2

Operator’s Cab

Construction: 12 gauge steel welded to formed 12 gauge channel and angle supports
Door latches: Heavy-duty latches with lockable handles
Helper’s seat: Fixed folding jump seat
Insulation, floor [closed-cell foam with 3 mm (0.125 in) pyramid vinyl surface]: 0.375 in
Insulation, wall and ceiling (thermal): 1.0 in
Left door to work deck: Swing-type, HD hinge
Length at floor: 78.0 in
Location: To the right from the mast if facing rear deck from the rear end
Operator’s seat: One swivel-type with armrests, headrest and retractable seatbelt
Right door: Swing-type, HD hinge
Sound levels: 80 dB(A) or less
Width at floor: 59.75 in
Climate Control: Wall mounted, AC/heating/pressurizing unit
Floor area: 32.40 ft2
Height inside: 76.50 in
Number of doors: 2 with windows (included in above)
Number of windows: 10
Other: Window wipers and washers
Type: Shock-mounted; two-man, integrated FOPS certified
Windows (tinted safety glass in rubber mounting): 0.25 in

Undercarriage

Final drive: Independent hydrostatic, 2-speed motors
Gradeability mast down: 32%
Overall length (variable with adjustment): 200.0 in
Pad type: Triple grouser
Pad width: 29.5 in
Rear axle (solid): 8.0 in
Rollers: Sealed, oil-flooded
Track adjustment means: Hydraulic with grease gun
Track drive disconnect: Standard (manual)
Upper track chain support: Two (2) carrier rollers
Width over tracks: 154.0 in

Undercarriage – Cat 336L

Brake release: Automatic
Brakes: Spring set, hydraulic release
Front: Three-point oscillating type
Maximum drive horsepower per track: 196 hp
Number of rollers on each side: 10
Rock guards/chain guides: Standard full-length guards
Tram speed – Maximum: 1.95 mph
Tram speed – Low speed: 1.3 mph

Mainframe

Construction: Electric welded
Handrails – Diameter: 1.9 in
Handrails – Height: 48.0 in
Main rails (ASTM 500 Grade B rectangular tubing heavily cross-braced and reinforced at high-stress areas): 203 mm × 406 mm × 13 mm (8 in × 16 in × 0.5 in)
Toolbox: Lockable door, below cab side walkway
Tow hooks: Welded, two (2) front
Jacks, mast pivot and deck: Welded integrally to mainframe
Machine deck: Access both sides

Drill Table and Work Deck

Deck floor material: Non-skid sheet metal
Drill deck length: 104.75 in
Drill deck width: 101.5 in
Hand rails – Diameter: 1.9 in
Hand rails – Height: 48.0 in
Drill deck area: 73.8 ft2
Table height off ground: 52 in

Dust Curtain (Optional Hydraulic Lifters, Front and Rear)

Dust deflector: Natural rubber seal
Dust deflector – Diameter: 14.0 in
Dust deflector – Thickness: 0.5 in
Enclosed area: 45.14 ft2
Location: Directly below table bushing
Material (rubber nylon reinforced): 0.25 in
Split for excess: Front and rear with 305 mm (12 in) overlap

Hydraulic System

Accessory Circuit/Feed Pump (Open-loop) – Maximum flow: 75.0 gal/min
Accessory Circuit/Feed Pump (Open-loop) – Pressure rating: 3335.0 psi
Accessory Circuit/Feed Pump (Open-loop) – Type: Axial piston, variable volume
Fan Circuit Pump – Maximum flow (dual fan): 65.0 gal/min
Fan Circuit Pump – Maximum flow (single fan): 57.0 gal/min
Fan Circuit Pump – Pressure rating: 3000.0 psi
Fan Circuit Pump – Type: Gear
Fan Drive Motor(s) – Dual fan: 2
Fan Drive Motor(s) – Pressure rating (continuous): 6000.0 psi
Fan Drive Motor(s) – Single fan: 1
Fan Drive Motor(s) – Type: Piston
Filtration (all filters have indicators and bypass) – Case return: 12 micron absolute
Filtration (all filters have indicators and bypass) – Charge: 3 micron, 1 per loop
Filtration (all filters have indicators and bypass) – Loop: 12 micron, 2 per loop (optional)
Filtration (all filters have indicators and bypass) – Main return: 12 micron absolute
Left Track/Rotation Pump (Closed-loop) – Maximum flow: 69.3 gal/min
Left Track/Rotation Pump (Closed-loop) – Pressure rating: 5510.0 psi
Left Track/Rotation Pump (Closed-loop) – Type: Axial piston, variable volume
Pump Drive Gearbox – Drive: Rubber coupler/drive shaft to front of engine
Pump Drive Gearbox – Type: 3 pad
Right Track Pump (Closed-loop) – Maximum flow: 69.3 gal/min
Right Track Pump (Closed-loop) – Pressure rating: 5510.0 psi
Right Track Pump (Closed-loop) – Type: Axial piston, variable volume
Rotation Drive Motor – Pressure rating: 5000.0 psi
Rotation Drive Motor – Type: Axial piston variable volume
Track Drive Motors (2) – Pressure rating: 6000.0 psi
Track Drive Motors (2) – Two-speed: 107/125 cc
Track Drive Motors (2) – Type: Bent axis fixed volume

Oil Cooling System (Hydraulic Tank)

Reservoir pressure: Atmospheric, filtered breather
Reservoir with sight and temperature gauge: 170.0 gal

Lubrication

Type: Centralized manual (optional auto-lubrication)

Engine (Standard) – C15

Air cleaner type: Dry-type with safety element
Batteries: Two (2) 8-D
Engine shut-down system: Energized to run
Full load: 2100.0 RPM
Jacket water cooling/CAC: Radiator
Manufacturer: Caterpillar
Muffler (inlet and outlet): 5.0 in
Muffler guard: 10 gauge for personal protection
Starting system: 24V DC
Turbo and manifold covers: Blankets and/or exhaust wrap
Fuel tank: 365 gal
Model: C15 ACERT*
Optional fuel tank: 283 gal
Rated horsepower: 540 hp
Note: *U.S. EPA Tier 3/EU Stage IIIA equivalent

Engine (Optional) – C27

Air cleaner type: Dry-type with safety element
Air cleaner type: Dry-type with safety element
Batteries: Four (4) 8-D
Batteries: Four (4) 8-D
Engine shut-down system: Energized to run
Engine shut-down system: Energized to run
Full load: 2100.0 RPM
Full load: 2100.0 RPM
Jacket water cooling/CAC: Radiator
Jacket water cooling/CAC: Radiator
Manifold covers: Blankets and/or exhaust wrap
Manifold covers: Blankets and/or exhaust wrap
Manufacturer: Caterpillar
Manufacturer: Caterpillar
Muffler (inlet and outlet): 5.0 in
Muffler (inlet and outlet): 5.0 in
Muffler guard: 10 gauge for personal protection
Muffler guard: 10 gauge for personal protection
Optional fuel tank: 283.0 gal
Optional fuel tank: 283.0 gal
Starting system: 24V DC
Starting system: 24V DC

Engine (Optional) – C27: Option 1

Fuel tanks: 1382 L (365 gal)
1071 L (283 gal)
Model: C27 ACERT*
Rated horsepower: 800 hp
Note: *Tier 2 equivalent

Engine (Optional) – C27: Option 2

Fuel tanks: 1382 L (365 gal)
1071 L (283 gal)
Model: C27 ACERT*
Rated horsepower: 875 hp
Note: *Tier 2 equivalent

Engine (Optional) – QSK-19 (Non-Cert)

Air cleaner type: Dry-type with safety element
Batteries: Four (4) 8-D
Engine shut-down system: Energized to run
Fuel tank: 365.0 gal
Full load: 2100.0 RPM
Jacket water cooling: Radiator
Manifold covers: Blankets and/or exhaust wrap
Manufacturer: Cummins
Model: QSK-19 (Non-Cert)
Muffler (inlet and outlet): 5.0 in
Muffler guard: 10 gauge for personal protection
Optional fuel tank: 283.0 gal
Rated horsepower: 750.0 hp
Starting system: 24V DC

Engine (Optional) – QSK-19 (Tier 2)

Air cleaner type: Dry-type with safety element
Batteries: Four (4) 8-D
Engine shut-down system: Energized to run
Fuel tank: 365.0 gal
Full load: 2100.0 RPM
Jacket water cooling/CAC: Radiator
Manifold covers: Blankets and/or exhaust wrap
Manufacturer: Cummins
Model: QSK-19 (Tier 2)
Muffler (inlet and outlet): 5.0 in
Muffler guard: 10 gauge for personal protection
Optional fuel tank: 283.0 gal
Rated horsepower: 760.0 hp
Starting system: 24V DC

Operator’s Controls

Filter Indicators: Filter indicators for engine and compressor intake, filter indicators are standard
Filter Indicators: Hydraulic fluid system, indicator lights for interlocks, rotary head rpm gauge and heating systems control are optional
Location: Console at front and side cab wall, placed 45° to the deck
Standard Compressor Controls: Compressor temperature
Standard Compressor Controls: Air pressure gauge
Standard Compressor Controls: Air shut-off control (electric) (high air temperature)
Standard Drilling Controls: Level indicator (bubble)
Standard Drilling Controls: On/off light switch (electric)
Standard Drilling Controls: Wiper/washer controls (electric)
Standard Drilling Controls: Deck wrench control (electric)
Standard Drilling Controls: Dust curtain (electric)
Standard Drilling Controls: Dust/water injection (electric)
Standard Drilling Controls: Mast lock (electric)
Standard Drilling Controls: Carousel indexing control (electric)
Standard Drilling Controls: Carousel in/out control (electric)
Standard Drilling Controls: Rotation control (electric over hydraulic)
Standard Drilling Controls: Mast elevation control (hydraulic)
Standard Drilling Controls: Leveling jack controls (hydraulic)
Standard Drilling Controls: Drill hourmeter (gauge)
Standard Drilling Controls: Carousel indexing (electric)
Standard Drilling Controls: Propel controls (electric over hydraulic)
Standard Drilling Controls: Pull-down pressure control (pilot hydraulic)
Standard Drilling Controls: Pull-down control (electric over hydraulic)
Standard Drilling Controls: HOBO/Break-out wrench control (electric)
Standard Engine Controls: Fuel level
Standard Engine Controls: Coolant temperature/high temperature shut-off
Standard Engine Controls: Oil pressure (low pressure shut-off)
Standard Engine Controls: Auto shut-down bypass
Standard Engine Controls: Voltmeter
Standard Engine Controls: Engine hourmeter
Standard Engine Controls: Tachometer
Standard Engine Controls: Stop button
Standard Engine Controls: Start button
Standard Engine Controls: Throttle control

Leveling Jacks

Counterbalance valves: Internal at each cylinder
Cylinder bore: 5.5 in
Cylinder rod diameter: 3.0 in
Cylinder stroke: 48.0 in
Cylinder stroke (optional front): 60.0 in
Inner extension boot – Outside diameter: 8.625 in
Inner extension boot – Wall: 0.322 in
Location: 2 front; 2 rear
Pad connection: Ball and socket
Lift capacity (each): 66500 lbf
Number: 4
Pad diameter: 24 in

Accessories, Tools and Handling Equipment

Bit Sub – Bottom thread: Depends on bit diameter
Bit Sub – Diameter: Depends on pipe diameter
Bit Sub – Length for 11 m (36 ft 0 in) mast: 60.0 in
Bit Sub – Length for 8 m (26 ft 3 in) and 10 m (32 ft 9¾ in) mast: 30.0 in
Bit Sub – Table bushing (standard): One (1) piece insert
Bit Sub – Top thread: Depends on pipe diameter
Deck Wrench – Impact means: Stationary jaw
Deck Wrench – Location: Drill deck
Deck Wrench – Wrench plate (T1-Steel): 3.0 in
Deck Wrench – Wrench positioning: Hydraulic cylinder
Drill Pipe (optional) – Optional length: 35.0 ft
HOBO Break-out Wrench – Power: Hydraulic Cylinders
HOBO Break-out Wrench – Support: Pivot
HOBO Break-out Wrench – Wrench type: Patented HOBO (Hydraulically Operated Break-Out)
Pipe Rack (outside the mast) – Length of drill pipe: 30.0 ft
Pipe Rack (outside the mast) – Pipe rack index: Hydraulic motor through chain drive
Pipe Rack (outside the mast) – Pipe rack swing: Hydraulic cylinders (2)
Pipe Rack (outside the mast) – Size of drill pipe/capacity – 11 m (36 ft 0 in) mast, 2 pipes: 114 mm to 178 mm (4.5 in to 7 in)
Winch System (mounted on the mast) – Swivel hook: Self-closing gate
Bit Sub (deck bushing) – Table bushing: Roller bushing or two-piece
Drill Pipe (optional) – Diameter (customer specification): 127 mm-178 mm (5.0 in-7.0 in)
Drill Pipe (optional) – Length: 35 ft
Drill Pipe (optional) – Wall thickness: 0.75 in
Drill Pipe (optional) – Threads: Depends on pipe diameter
Note: 4-pod carousel 10 m (32 ft 9¾ in) mast
Pipe Rack (outside the mast) – Location: Outside mast
Pipe Rack (outside the mast) – Length of drill pipe: 35 ft
Pipe Rack (outside the mast) – Size of drill pipe/capacity – 10 m (32 ft 9¾ in) mast, 4 pipes: 127 mm to 178 mm (5.0 in to 7 in)
Pipe Rack (outside the mast) – Type: Carousel, with stationary breaker plates
Top Adapter Sub – Bottom thread: Depends on pipe diameter
Top Adapter Sub – Diameter: Depends on pipe diameter
Top Adapter Sub – Length: 28 in
Top Adapter Sub – Top thread (API Reg.): 5.5 in
Winch System (mounted on the mast) – Cable size: 0.5 in
Winch System (mounted on the mast) – Rating: 8000 lb

Cooler Assembly: Radiator – CAC-Oil Cooler Assembly for Cat® C15 (Tier 3) 403 kN (540 hp), single, front-end mounted

Compressor oil core hose connection (O-ring boss): 2.5 in
Cooler height: 55.0 in
Cooler width: 106.0 in
Engine radiator – Coolant connections (bottom tank): 3.5 in
Engine radiator – Coolant connections (top tank): 2.5 in
Engine radiator – Top tank: Sealed top tank, pressure cap, overflow tube and sight glass
Fan diameter (10 blades): 48.0 in
Fan guard: Welded
Fan speed: 1525.0 RPM
Hydraulic oil cooler – Air-to-air cooler (O.D.): 4.5 in
Hydraulic oil cooler – Hose connections (O-ring boss): 1.625 in
Hydraulic oil cooler – Standard ambient rating: 125.0 ° F
Special Note: Air-finned, three-core, radiator/aftercooling/hydraulic side-by-side compressor, CAC-stacked

Cooler Assembly: Radiator – CAC-Oil Cooler Assembly for Cat C27 (Tier 2) 597 kW (800 hp), single, front-end mounted

Cooler height (dual fan): 65.0 in
Cooler width (dual fan): 114.0 in
Engine radiator – Standard ambient rating: 125.0 ° F
Engine radiator – Top tank: Sealed deaeriation tank, pressure cap, overflow tube and sight glass
Fan guard: Welded
Fan speed: 1700.0 RPM
Fan – diameter (two fans, 16 blades): 46.0 in
Special Note: Air-finned, four-core, radiator/hydraulic side-by-side compressor, CAC–stacked

Cooler Assembly: Radiator – Coolant-Oil Cooler Assembly for Cummins QSK-19 (Tier 1) 559 kW (750 hp), single, front-end mounted

Cooler height (single fan): 61.0 in
Cooler width (single fan): 101.625 in
Engine radiator – Standard ambient rating: 125.0 ° F
Engine radiator – Top tank: Sealed deaeriation tank, pressure cap, overflow tube and sight glass
Fan guard: Welded
Fan speed: 1525.0 RPM
Fan – diameter (10 blades): 48.0 in
Special Note: Air-finned, three-core, radiator/hydraulic side-by-side compressor-stacked

Cooler Assembly: Radiator – CAC-Oil Cooler Assembly for Cummins QSK-19 (Tier 2) 567 kW (760 hp), single, front-end mounted

Cooler height (dual fan): 65.0 in
Cooler width (dual fan): 114.0 in
Engine radiator – Standard ambient rating: 125.0 ° F
Engine radiator – Top tank: Sealed deaeriation tank, pressure cap, overflow tube and sight glass
Fan guard: Welded
Fan speed: 1700.0 RPM
Fan – diameter (two fans, 16 blades): 46.0 in
Special Note: Air-finned, four-core, radiator/hydraulic side-by-side compressor, CAC–stacked

Compressor (Standard): Oil-flooded, single-stage screw

Air cleaner type: Dry-type with safety element
Air shut-off: Hydraulic cylinder – operated from operator’s seat
Controls: Automatic with safety shut-down
Drive: Direct coupled to engine flywheel
Oil cooling: Air-to-oil cooler, thermostatically controlled
Oil filtration: 12 micron replaceable element
Oil separation: Vertical barrier element, pre-separation in 136 L (36 gal) (T-tank)
Discharge air flow (sea level): 1050 ft3/min
Maximum operating pressure: 125.0 psi

Compressor (Optional): Oil-flooded, single-stage screw

Air cleaner type: Dry-type with safety element
Air cleaner type: Dry type with safety element

Compressor (Optional): Oil-flooded, single-stage screw – Option 2

Discharge air flow (sea level): 1700 ft3/min
Maximum operating pressure: 125 psi

Compressor (Optional): Oil-flooded, single-stage screw – Option 1

Discharge air flow (sea level): 1250 ft3/min
Maximum operating pressure: 125 psi

Compressor (Optional): Oil-flooded, two-stage screw (high-pressure)

Air cleaner type: Dry-type with safety element
Discharge air flow (sea level): 38 m3/min (1,350 ft3/min)
Discharge air flow (sea level): 43 m3/min (1,500 ft3/min)
Discharge air flow (sea level): 33 m3/min (1,150 ft3/min)
38 m3/min (1,350 ft3/min)
43 m3/min (1,500 ft3/min)
Maximum operating pressure: 350 psi