MD6290 Rotary Blasthole Drill

Specifications

Bit Load
up to 23 737 kg (up to 52,321 lb)
Hole Diameter
152 - 244 mm (6.0 - 9.625 in)
Engine
C15 (Tier 3) - 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
120152.0lb

Rotary Drive System

Horsepower capacity
182hp
Drive motor
See Hydraulic System
Gearbox
Casting design
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)

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
Discharge air flow (sea level)
1050ft3/min
Drive
Direct coupled to engine flywheel
Maximum operating pressure
125.0psi
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)

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)
61.0in
Cooler width (single fan)
101.625in
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
1525.0RPM
Fan – diameter (10 blades)
48.0in
Special Note
Air-finned, three-core, radiator/hydraulic side-by-side compressor-stacked

Leveling Jacks

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

Mainframe

Construction
Electric welded
Handrails – Diameter
1.9in
Handrails – Height
48.0in
Jacks, mast pivot and deck
Welded integrally to mainframe
Machine deck
Access both sides
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

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)
1700ft3/min
Maximum operating pressure
100psi

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

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

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
2100.0RPM
Full load
2100.0RPM
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)
5.0in
Muffler (inlet and outlet)
5.0in
Muffler guard
10 gauge for personal protection
Muffler guard
10 gauge for personal protection
Starting system
24V DC
Starting system
24V DC

Engine (Optional) – C27: Option 1

Fuel tank
365gal
Model
C27 (Tier 2)
Optional fuel tank
283gal
Rated horsepower
800hp

Engine (Optional) – C27: Option 2

Fuel tank
365gal
Model
C27 (Tier 2)
Optional fuel tank
283gal
Rated horsepower
875hp

Rated Capacity

Bit/hole diameter
152-244 mm (6-9.625 in)
Depth multi-pass (8 m/26 ft 3 in mast)
Up to 45.1 m (Up to 148 ft 0 in)
Depth multi-pass (10 m/32 ft 9¾ in mast)
Up to 52.7 m (Up to 173 ft 0 in)
Depth multi-pass (11 m/36 ft 0 in mast)
Up to 32.3 m (Up to 106 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)

Operating Temperature

Altitude
Up to 4572 m (Up to 15,000 ft)
Cold weather option
-40.0° F
Maximum ambient rating (standard)
125.0° F
Minimum ambient rating (standard)
30° F

Engine (Standard) – C15

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

Lubrication

Type
Centralized manual (optional auto-lubrication)

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)
65.0in
Cooler width (dual fan)
114.0in
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
1700.0RPM
Fan – diameter (two fans, 16 blades)
46.0in
Special Note
Air-finned, four-core, radiator/hydraulic side-by-side compressor, CAC–stacked

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

Air cleaner type
Dry-type with safety element
Discharge air flow (sea level)
1350ft3/min
Discharge air flow (sea level)
1500ft3/min
Discharge air flow (sea level)
1150ft3/min
Maximum operating pressure
10.3/24.1 bar (150/350 psi)

Hydraulic System

Accessory Circuit/Feed Pump (Open-loop) – Maximum flow
75.0gal/min
Accessory Circuit/Feed Pump (Open-loop) – Pressure rating
3335.0psi
Accessory Circuit/Feed Pump (Open-loop) – Type
Axial piston, variable volume
Fan Circuit Pump – Maximum flow (dual fan)
65.0gal/min
Fan Circuit Pump – Maximum flow (single fan)
57.0gal/min
Fan Circuit Pump – Pressure rating
3000.0psi
Fan Circuit Pump – Type
Gear
Fan Drive Motor(s) – Dual fan
2
Fan Drive Motor(s) – Pressure rating (continuous)
6000.0psi
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
69.3gal/min
Left Track/Rotation Pump (Closed-loop) – Pressure rating
5510.0psi
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
69.3gal/min
Right Track Pump (Closed-loop) – Pressure rating
5510.0psi
Right Track Pump (Closed-loop) – Type
Axial piston, variable volume
Rotation Drive Motor – Pressure rating
5000.0psi
Rotation Drive Motor – Type
Axial piston variable volume
Track Drive Motors (2) – Pressure rating
6000.0psi
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
170.0gal

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

Cooler height (dual fan)
65.0in
Cooler width (dual fan)
114.0in
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
1700.0RPM
Fan – diameter (two fans, 16 blades)
46.0in
Special Note
Air-finned, four-core, radiator/hydraulic side-by-side compressor, CAC–stacked

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
365.0gal
Full load
2100.0RPM
Jacket water cooling
Radiator
Manifold covers
Blankets and/or exhaust wrap
Manufacturer
Cummins
Model
QSK-19 (Non-Cert)
Muffler (inlet and outlet)
5.0in
Muffler guard
10 gauge for personal protection
Optional fuel tank
283.0gal
Rated horsepower
750.0hp
Starting system
24V DC

Operator’s Cab

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

Drill Table and Work Deck

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

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

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
60.0in
Bit Sub – Length for 8 m (26 ft 3 in) and 10 m (32 ft 9¾ in) mast
30.0in
Bit Sub – Table bushing (optional)
Roller bushing or two-piece
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)
3.0in
Deck Wrench – Wrench positioning
Hydraulic cylinder
Drill Pipe (optional) – Diameter (customer specification)
114 mm-178 mm (4.5 in-7.0 in)
Drill Pipe (optional) – Length
30ft
Drill Pipe (optional) – Optional length
35ft
Drill Pipe (optional) – Wall thickness
0.75in
Drill Pipe (optional) – Threads
Depends on pipe diameter
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)
Note
4-pod carousel for 8 m (26 ft 3 in) and 10 m (32 ft 9¾ in) mast, 2-pod carousel for 11 m (36 ft 0 in) mast
Pipe Rack (outside the mast) – Length of drill pipe
30ft
Pipe Rack (outside the mast) – Location
Outside mast
Pipe Rack (outside the mast) – Optional length of drill pipe
35ft
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)
Pipe Rack (outside the mast) – Size of drill pipe/capacity – 8 m (26 ft 3 in) and 10 m (32 ft 9¾ in) mast, 4 pipes
114 mm to 178 mm (4.5 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
28in
Top Adapter Sub – Top thread (API Reg.)
5.5in
Winch System (mounted on the mast) – Cable size
0.5in
Winch System (mounted on the mast) – Rating
3500lb
Winch System (mounted on the mast) – Swivel hook
Self-closing gate

Pull-down/Hoisting Capacity

Bit load force
Up to 23 737 kg (Up to 52,321 lb)
Cable sheaves (cylinder) – outside diameter
16.0in
Cable sheaves (top and bottom) – outside diameter
22.0in
Cable type – 25 mm (1 in)
DYFORM 8
Cylinder bore – diameter
7.0in
Cylinder rod – diameter
5.0in
Feed rate
0-44.8 m/min (0-147 ft/min)
Head travel (10 m/32 ft 9¾ in mast)
464.0in
Head travel (11 m/36 ft 0 in mast)
492in
Head travel (8 m/26 ft 3 in mast)
404.0in
Number of cylinders
1
Pull-down cylinder stroke (10 m/32 ft 9¾ in mast)
232.0in
Pull-down cylinder stroke (11 m/36 ft 0 in mast)
246.0in
Pull-down cylinder stroke (8 m/26 ft 3 in mast)
202.0in
Rated hoist capacity
Up to 210 kN (Up to 47,100 lbf)
Rated pull-down capacity
Up to 267 kN (Up to 60,000 lbf)
Retract rate
0-46.6 m/min (0-153 ft/min)
Sheave guards
Standard at bottom plate
Type
Open-loop, hydraulic (stationary barrel, moving rod)

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)
11.0in

Undercarriage

Brake release
Automatic
Brakes
Spring set, hydraulic release
Final drive
Independent hydrostatic, 2-speed motors
Front
Three-point oscillating type
Gradeability mast down
53%/27.9 degrees
Maximum drive horsepower per track
196hp
Number of rollers on each side
10
Overall length (variable with adjustment)
200.0in
Pad type
Triple grouser
Pad width
29.5in
Rear axle (solid)
8.0in
Rock guards/chain guides
Standard full-length guards
Rollers
Sealed, oil-flooded
Track adjustment means
Hydraulic with grease gun
Track drive disconnect
Standard (manual)
Tram speed – Maximum
1.8mph
Tram speed – Two speed
1.3mph
Upper track chain support
Two (2) carrier rollers
Width over tracks
154.0in

Dust Curtain (Optional Hydraulic Lifters, Front and Rear)

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

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

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
365.0gal
Full load
2100.0RPM
Jacket water cooling/CAC
Radiator
Manifold covers
Blankets and/or exhaust wrap
Manufacturer
Cummins
Model
QSK-19 (Tier 2)
Muffler (inlet and outlet)
5.0in
Muffler guard
10 gauge for personal protection
Optional fuel tank
283.0gal
Rated horsepower
760.0hp
Starting system
24V DC

Mast – Elevating Cylinders

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