MD6420C Rotary Blasthole Drill Autonomous Ready

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Specifications

Hole Diameter: Up to 311 mm (Up to 12.25 in)
Engine: C32 ACERT
Bit Load: Up to 41 346 kg (Up to 91,152 lb)

Operating Environment

Altitude: Up to 4572 m (Up to 15,000 ft)
Maximum ambient rating (standard): 125 ° F
Minimum ambient rating (standard): 30 ° F
Note: Optional cold weather packages available

Pull-down/Hoisting Capacity

Retract rate: 0-33.5 m/min (0-110 ft/min)
Pull-down capacity: Up to 383 kN (Up to 86,000 lbf)
Hoist capacity: Up to 311 kN (Up to 70,000 lbf)
Drilling feed rate: 0-33.5 m/min (0-110 ft/min)
Head travel (16 m/50 ft mast): 720 in
Head travel (13 m/40 ft mast): 600 in
Head travel (10 m/35 ft mast): 480 in
Cable type – 29 mm (1.125 in): DYFORM 8
Bit load force: Up to 41 346 kg (Up to 91,152 lb)

Rotary Drive System

Rotation speed: 0-137 rpm
Torque, dual motors: 0-17 313 N∙m (0-12,769 lbf-ft)

Operator’s Cab

Climate control: Roof-mounted, AC/heating/pressurizing unit
Floor area: 52.22 ft2
Height inside: 84.50 in
Location: To the right from the mast if facing rear deck from the rear end
Number of doors: Two (2) with windows (included in above)
Number of windows: 12
Other: Window wipers and washers
Type: Shock-mounted; two-man, integrated FOPS certified
Windows (tinted safety glass laminated in rubber mounting): 0.56 in

Undercarriage

Brake release: Automatic
Brakes: Spring set, hydraulic release
Front: Three-point oscillating type
Maximum drive horsepower per track: 290 hp
Number of rollers on each side: Total of 16: (13) lower rollers, (3) upper/carrier rollers
Track adjustment means: Hydraulic with grease gun
Track drive disconnect: Standard (manual)
Tram speed maximum: 1.41 mph
Rock guards/chain guards: Standard full-length guards
Gradeability mast down – CDH (cab down hill): 25%
Gradeability mast down – CUH (cab up hill): 13%

Drill Table and Work Deck

Table height off ground: 57 in
Components: Pipe loading guide roller
Components: Stationary rear deck
Components: Left rear swing gated handrail (dual gate design)
Components: Rear deck bit storage box with aluminum cover
Components: Hydraulically operated viewing hatch with LED hatch viewing spot light

Leveling Jacks

Lift capacity – each: 114877 lbf
Number: 4
Pad diameter – Non-drill end: 30 in
Pad diameter – Drill end: 36 in
Stroke on non-drill end: 60 in
Stroke on drill end: 48 in

Accessories, Tools and Handling Equipment

Shock Sub (DTH Application): Thread – API reg. 140 mm (5.5 in)
Top Adapter Sub: Diameter depends on pipe diameter
Top Adapter Sub: Top thread – API reg. 140 mm (5.5 in)
Top Adapter Sub: Bottom thread – depends on pipe diameter
Bit Sub (Rotary Application): Top thread – depends on pipe diameter
Bit Sub (Rotary Application): Bottom thread – API reg. 168 mm (6.625 in)
Bit Sub (Rotary Application): Table bushing roller-type or two-piece with replaceable liner
Pipe Rack (Inside the Mast): Carousel with stationary pods and breaker plates
16 m Configuration: 7.62 m (25 ft) × 2 as starter and four pieces of 7.62 m (25 ft) in carousel
16 m Configuration: Outside diameter – 194 mm (75⁄8 in) or 219 mm (85⁄8 in)
13 m Configuration: 12.19 m (40 ft) starter and five pieces of 12.19 m (40 ft) in carousel
13 m Configuration: Outside diameter – 194 mm (75⁄8 in) or 219 mm (85⁄8 in)
10 m Configuration: 10.66 m (35 ft) starter and five pieces of 10.66 m (35 ft) in carousel
10 m Configuration: Outside diameter – 194 mm (75⁄8 in) or 219 mm (85⁄8 in)
10 m Configuration: Length of drill – 10.67 m (35 ft)
Winch System: Rating – 3629 kg (8,000 lb) with 1588 kg (3,500 lb) lift capacity
Winch System: Cable size – 13 mm (0.5 in)
Pipe Handling: Sliding deck wrench
Pipe Handling: Fixed cable pipe catcher or optional hydraulic safety arm/pipe catcher with drill function interlock, when pipe catcher is not closed
Pipe Handling: Manually removable or optional hydraulically operated bit basket
Pipe Handling: Lifting bail-drill pipe/bit sub

Compressor (Standard): Poppit inlet, fixed displacement

Discharge air flow (sea level): 2000 ft3/min
Maximum operating pressure: 100 psi

Compressor (Optional): Type 1 – Butterfly inlet, adjustable from half to full displacement

Discharge air flow (sea level): 2600 ft3/min
Maximum operating pressure: 100 psi

10-, 13- or 16-Meter Mast Configuration

Hole diameter: Up to 311 mm (Up to 12.25 in)
16 m/50 ft mast – Depth single pass: 54 ft
16 m/50 ft mast – Multi-pass: Up to 46.9 m (Up to 154 ft)
13 m/40 ft mast – Depth single pass: 44 ft
13 m/40 ft mast – Multi-pass: Up to 74.4 m (Up to 244 ft)
10 m/35 ft mast – Depth single pass: 33.75 ft
10 m/35 ft mast – Multi-pass: Up to 63.4 m (Up to 208 ft)
Angle drilling: 30° (in 5° increments)

Compressor (Optional): Type 2 – Poppit inlet, fixed displacement

Discharge air flow (sea level): 1500 ft3/min
Maximum operating pressure: 10.3/24.1/34.4 bar (150/350/500 psi)
Hi/low pressure switch, bit oil injection system: 30 gal

Mainframe, Decks and Walkways

Jacks, mast pivot and deck: Welded integrally to mainframe
Machine deck: Access both sides

Engine – C32 ACERT* (Standard)

Model: C32 ACERT
Rated horsepower: 912 hp
Fuel tank: 1514 L plus, 1703 L (400 gal plus, 450 gal)
Emissions: * The C32 ACERT engine meets U.S. EPA Tier 2/EU Stage II equivalent emission standards

Engine – C32 ACERT* (Optional)

Model: C32 ACERT
Rated horsepower: 1039 hp
Fuel tank: 1514 L plus, 1703 L (400 gal plus, 450 gal)
Emissions: * The C32 ACERT engine meets Tier 2/Stage II equivalent emission standards

Controls

Manuals: Operations/maintenance manuals and all schematics are stored in drill monitor
Display: English control system display text ex-factory. May be changed to other languages by dealer.
Components: Basic engine shut down timer
Components: Drill performance and monitoring/diagnostics system
Components: Electronic compressor control
Electronic control:: – Monitoring – Diagnostic system
Components: Filter indicators
Components: High/low tram speed select (high only when mast is down) interlock
Components: HMI touch screen control
Components: Mast lock indicator
Components: ECM (Electronic Control Module) provides fast and reliable control of all drill functions
Components: Pump drive gearbox temperature sensor
Components: Rotary head RPM gauge – digital
Components: Tram interlock, machine outside stability limits
Components: Tram interlock, pipe in hole
Components: Tram interlock, mast up and locked or down and parked
Components: Jack/tram interlock
Components: Cab environment control (AC, filter indicator, heat, fan speeds)
Components: Pipe positioner sensor
Components: Drill depth meter
Components: Drill function interlock, mast up and locked
Components: Rotary torque control
Components: Head clear interlock, rotary drive clear of carousel
Components: Winch interlock
Components: Jack pressure sensor
Components: Virtual rotary head travel stop
Components: Wiring for terrain interface provided

Base Machine

Components: Fuel tanks isolation valves
Components: Hydraulic tank with isolation valves and interlocks
Components: Slip resistant decks and walkways
Components: 3217 L (850 gal) fuel, (two tanks mounted under engine/compressor) with manual and remote fill
Components: Bolt-on hand rails with kick plates
Components: Cat® maintenance free batteries
Components: Stainless battery box, sliding drawer type
Components: Remote jump start terminals
Components: Tow hooks (front end)
Components: Lift lugs (for base machine minus mast)
Components: Walkways around the drill, 360 degrees
Components: Swing up steps, access/egress
Components: Self-closing gates
Components: Two stage mast raise cylinders
Components: Fixed dust curtains – four sides

POWER TRAIN
- Engine, Cat C32 ACERT, Tier 2/Stage II equivalent, 1,800 rpm
- Manifold covers, turbo and exhaust
- Engine fire frame
- Fire wall, engine and hydraulic drive
- Exhaust pipe blankets
MAST
- Hole diameter, up to 311 mm (121⁄4 in)
- Rated capacity, up to 383 kN (86,000 lbf)
- Pulldown/hoist system, single cylinder
- Rotary drive, dual motors
- 0-137 rpm, 0-17 313 N·m (0-12,769 lbf-ft) maximum torque
- Angle drilling, up to 30 degrees
- Mast locks and indicator in cab
- Auto cable tensioning system
- Hydraulic Operated Break-Out wrench (HOBO)
- Shear bolt deck wrench cover
- Dust hood with hinged quick change dust seal
- Remote thread lube system
- Mast lanyard mounting plates
OPERATOR ENVIRONMENT
- Cab, shock mounted, insulated
- Two-man extra-large FOPS
- Cat operator seat with air suspension
- Trainer’s seat
- Operator’s console: split with stainless steel panels
- Electric controls for drilling, tramming, leveling and auxiliary functions
- Dome lights, overhead interior
- Dash light
- Two (2) hinged doors, heavy duty latching
- Twelve (12) windows
- Full front drill window
- Roof window with protective cage
- Windshield wipers, washer tank kit
- Air conditioning/heating/pressurizing roof mounted, hydraulic driven
- Cab ladder, roof platform and railing
- Electric horn
- Slope indicators
- CD stereo kit with speakers
- 24V to 12V converter
- English control system display text may be changed to other languages
- Electronic Control Module (ECM)
- HMI touch screen control
- Drill performance monitoring and diagnostics system
- Drill depth meter
- Travel stop, virtual rotary head
- Jack/tram interlock
- Tram interlock, pipe in hole
- Tram interlock: mast up and locked or down and parked
- Mast lock indicator
- Tram speed select interlock: high only when mast is down
- Tram interlock: machine outside stability limits
- Drill function interlock mast up and locked
- Head clear interlock: rotary drive clear of carousel
- Winch interlock
- Pipe positioner sensor
- Jack pressure sensor
- Rotary head RPM gauge, digital
- Rotary torque control
- Electronic compressor control
- Filter indicators
- Pump drive gearbox temperature sensor
- Basic engine shut down timer
- Cab environment control: AC, filter indicator, heat, fan speeds
- Wiring for terrain interface
SAFETY AND SECURITY
- Air hose safety sleeves (whip socks)
- Hinged protective cage: for drill view window
- Battery and starter disconnects with lock-outs
- Eight (8) engine shut down buttons
- Tram alarm
- Strobe beacon on: – Cab and front left side of drill – Clearance light, mast crown
- Twenty (20) lights for night drilling
- Two (2) closed circuit cameras (front and left side) with monitor in cab
COOLING
- Shutdown switch, low coolant level
- Cooler fans, variable speed, ECM
FRAMES
- Four (4) leveling jacks: – Two (2) × 121.9 cm (48 in) rear – Two (2) × 152.4 cm (60 in) front
- Tow hooks, front end
- Lift lugs, for base machine without mast
- Mast raise cylinders, two stage
- Walkways, around the drill, 360 degrees
- Decks and walkways, slip resistant
- Hand rails, bolt-on with kick plates
- Swing up steps, access/egress
- Self-closing gates
- Stationary, rear deck
- Hydraulic viewing hatch with LED hatch viewing spot light
- Fixed dust curtains, four sides
- Rear deck bit storage box with aluminum cover
- Pipe loading guide roller
- Left rear swing gated handrail, dual gate
- Fuel tanks: – Two (2) tanks mounted below deck – 3217 L (850 gal) fuel – Manual and remote fill – Isolation valves
- Hydraulic tank with isolation valves and interlocks
- Cat maintenance free batteries
- Battery box, stainless, sliding drawer
- Cat remote jump start terminals
OTHER STANDARD EQUIPMENT
- Standard Caterpillar colors
- Foam injection connection
- Loop filters between hydraulic pumps and motors
- Return filters, hydraulic
- Auto lubrication system, centralized
- Feed traveling sheave lube provision
- Hydraulic pressure test points