MD6240 Rotary Drill - Puckett Rents

High productivity and low cost of ownership is yours with the MD6240 Rotary Drill. With bit load force of 24 000 kg (52,911 lb) and the capability to drill depths up to 55.47 m (182 ft) the MD6240 is well equipped to drill in hard or soft rock applications. Built to be reliable, safe and easy to service for years to come.

Basic Specifications

Bit Load: 24 000 kg (52,911 lb)
Hole Diameter: 152-244 mm (6-9.625 in)
Engine: C27 (Tier 2) – 597 kW (800 hp) at 2,100 rpm
Compressor: 48 m³/min (1,700 ft³/min) 6.9 bar (100 psi)
Engine Cat® C27 Tier 2: 597 kW (800 hp) at 2,100 rpm
Hole Depth Single-pass (12 m/39 ft mast): Up to 12.80 m (42 ft)/Multi-pass Up to 55.47 m (182 ft)
Hole Depth Single-pass (15 m/49 ft mast): Up to 15.85 m (52 ft)/Multi-pass Up to 31.08 m (102 ft)

Rated Capacity

Depth multi-pass (15 m/49 ft mast): Up to 31.08 m (Up to 102 ft)
Depth single-pass (12 m/39 ft mast): Up to 12.80 m (Up to 42 ft)
Bit/hole diameter: 152-244 mm (6-9.625 in)
Depth multi-pass (12 m/39 ft mast): Up to 55.47 m (Up to 182 ft)
Depth single-pass (15 m/49 ft mast): Up to 15.85 m (Up to 52 ft)

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

Pull-down/Hoisting Capacity

Adjustable head guide shoes: Steel with replaceable Nylatron
Cable sheaves (cylinder) OD: 16.0 in
Cable sheaves (top and bottom) OD: 20.0 in
Cylinder bore – diameter: 6.5 in
Cylinder rod – diameter: 4.0 in
Number of cylinders: 1
Pull-down cylinder stroke (12 m/39 ft): 286.2 in
Pull-down cylinder stroke (15 m/49 ft): 346.5 in
Sheave guards: Standard at bottom plate
Type: Closed-loop, hydraulic (stationary rod, moving barrel)
Automatic cable: Hydraulic cylinder, tensioning
Cable type 25 mm (1 in): DYFORM 8
Drilling feed/retract rate: 0-39.3 m/min (0-129 ft/min)
Head travel (12 m/39 ft): 572.4 in
Head travel (15 m/49 ft): 693.0 in
Rated hoist capacity: Up to 222 kN (Up to 50,000 lbf)
Rated pull-down capacity: Up to 222 kN (Up to 50,000 lbf)

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: 0-13 015 N·m (0-9,600 ft-lb)

Cooler Assembly

Compressor cooler – Height: 72.0 in
Compressor cooler – Width: 64.0 in
Engine radiator, top tank: Sealed deaeration tank, pressure cap, overflow tube and sight glass
Fan diameter (one fan per cooler, 10 blades): 48.0 in
Fan guard: Welded
Fan speed – maximum: 1525.0 RPM
Radiator/hydraulic cooler – Height: 58.0 in
Radiator/hydraulic cooler – Width: 58.0 in
Special Note: Split coolers, air-finned, three- or four-core, radiator/hydraulic stacked, compressor separate
Standard ambient rating: 125.0 ° F

Compressor (Standard)

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 189 L (50 gal) horizontal sump (T-tank)
Discharge air flow (sea level): 1700 ft3/min
Maximum operating pressure: 100 psi
Type: Oil-flooded, single-stage screw

Compressor (Optional)

Air cleaner: Dry-type with safety element
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: 10.3/24.1 bar or 10.3/24.1/34.5 bar (150/350 psi or 150/350/500 psi)
Type (high pressure): Oil-flooded, two-stage screw

Engine (Standard) – C27 Tier 2

Full load: 2100.0 RPM
Air cleaner type: Dry-type with safety element
Batteries: Four (4) 8-D
Jacket water cooling/CAC: Radiator
Manifold covers: Blankets and/or exhaust wrap
Muffler (inlet and outlet): 5.0 in
Muffler guard: 10 gauge for personal protection
Optional fuel tank: 415.0 gal
Safety shut-down system: Energized to run
Starting system: 24V DC
Rated horsepower: 800 hp
Fuel tank: 765 gal
Manufacturer: Caterpillar
Model: C27 Tier 2
Optional rated horsepower: 875 hp

Engine (Optional) – QST-30

Air cleaner type: Dry-type with safety element
Batteries: Four (4) 8-D
Fuel tank: 350.0 gal
Full load: 2100.0 RPM
Jacket water cooling: Radiator
Model: QST-30 (Non-Cert)
Muffler (inlet and outlet): 5.0 in
Muffler guard: 10 gauge for personal protection
Optional Tier 2 rated horsepower: 1050.0 hp
Optional fuel tank: 415.0 gal
Rated horsepower: 1050.0 hp
Safety shut-down system: Energized to run
Starting system: 24V DC
Turbo and manifold covers: Blankets and/or exhaust wrap

Mast

Construction: ASTM 500 grade B rectangular tubing, welded
Hose tray: Sheet steel trough for moving hoses
Hydraulic lines: Pressure-rated steel hydraulic tubing
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: 8.0 in
Cylinder connection pins diameter: 2.25 in
Cylinder rod diameter: 4.0 in
Cylinder stroke: 42.6 in
Lift capacity each cylinder: 125065.0 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
Operator’s seat: One swivel-type with armrests, headrest and retractable seat belt
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: 32.4 ft2
Height inside: 76.5 in
Number of doors: 2 with windows (included 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 motors
Overall length: 224.6 in
Pad type: Triple grouser
Pad width: 29.5 in
Rear axle (solid): 8.0 in
Rollers: Sealed, oil-flooded
Type: Excavator type
Upper track chain support: Two (2) carrier rollers
Width over tracks: 154.0 in
Brakes: Spring set, hydraulic release
Front axle: Three-point oscillating type
Gradeability mast down: 48%/25.6 degrees
Maximum drive horsepower per track: 204.0 hp
Number of lower rollers: 12
Rock guards/chain guides: Standard full-length guards
Tram speed maximum: 1.25 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

Mainframe – Leveling Jacks

Counterbalance valves: Internal at each cylinder
Cylinder bore: 5.5 in
Cylinder rod diameter: 3.0 in
Cylinder stroke: 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: 65300 lbf
Number: 4
Pad diameter: 24 in

Drill Table and Work Deck

Deck floor material: Non-skid sheet metal
Drill deck area: 73.8 ft2
Drill deck length: 104.75 in
Drill deck width: 101.5 in
Table height off ground: 52.0 in

Dust Suppression

Dust collector capacity: 4500 ft3/min
Note: Both dry and water injection can be mounted on the same drill

Dust Curtain (Optional Hydraulic Lifters, Front and Rear)

Enclosed area: 45.14 ft2
Material (rubber nylon reinforced): 0.25 in
Split for excess: Front and rear with 305 mm (12 in) overlap

Hydraulic System

Fan Drive Motor(s) – Single Fan – Pressure rating (continuous): 6000.0 psi
Fan Drive Motor(s) – Single Fan – Type: Piston
Fan/Accessory Circuit Pump (Open-loop) – Maximum flow – dual fan (one per cooler): 72.0 gal/min
Fan/Accessory Circuit Pump (Open-loop) – Pressure rating: 5000.0 psi
Fan/Accessory Circuit Pump (Open-loop) – Type: Axial piston, variable volume
Filtration (all filters have indicators and bypass) – Case return: 12 micron
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 and Right Track/Rotation Pump (Closed-loop) – Maximum flow: 75.0 gal/min
Left and Right Track/Rotation Pump (Closed-loop) – Pressure rating: 5800.0 psi
Left and Right 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
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) – 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)

Pipe Rack (outside the mast)

Pipe rack index: Hydraulic motor through chain drive
Pipe rack swing: Hydraulic cylinders (2)
Size of drill pipe/capacity: 114-178 mm (4.5-7 in)
12 m (39 ft) mast arrangement: 4 pods; 10.67 m (35 ft) long pipe
15 m (49 ft) mast arrangement: 2 pods; 7.62 m (25 ft) long pipe
Type: Carousel, with stationary pods and breaker plates

Winch System

Cable size: 0.5 in
Capacity: 3500 lb

Accessories, Tools and Handling Equipment

Drill Pipe (Optional, Price-Adder) – 12 m (39 ft) mast arrangement: Diameter (customer specification): 114-178 mm (4.5-7.0 in)
Drill Pipe (Optional, Price-Adder) – 12 m (39 ft) mast arrangement: Wall thickness: 0.75 in
Drill Pipe (Optional, Price-Adder) – 12 m (39 ft) mast arrangement: Length: 35 ft
Drill Pipe (Optional, Price-Adder) – 12 m (39 ft) mast arrangement: Threads: Depends on pipe diameter
Drill Pipe (Optional, Price-Adder) – 15 m (49 ft) mast arrangement: Diameter (customer specification): 114-178 mm (4.5-7.0 in)
Drill Pipe (Optional, Price-Adder) – 15 m (49 ft) mast arrangement: Wall thickness: 0.75 in
Drill Pipe (Optional, Price-Adder) – 15 m (49 ft) mast arrangement: Length: 25 ft
Drill Pipe (Optional, Price-Adder) – 15 m (49 ft) mast arrangement: Threads: 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
Top Adapter Sub – Bottom thread: Depends on pipe diameter
Bit Sub – Table bushing: One (1) piece insert, roller deck bushing or two-piece

CAPABILITY
- The MD6240 is designed to drill from 152-244 mm (6-9.625 in) diameter holes with rated pulldown and hoist capacity up to 22 680 kg (50,000 lb), in Rotary or Down the Hole applications.
ENGINE
- Metal turbo and exhaust manifold covers
- Engine pre-lube
- Additional filtration
- Coolant conditioner
MAST
- 152-270 mm (6-105⁄8 in) hole diameter
- Up to 22 680 kg (50,000 lb) rated single cylinder pulldown/hoist system
- Up to 24 000 kg (52,911 lb) bit load with one pipe in the drill string
- Patented HOBO (Hydraulically Operated Break-Out) wrench operated from the cab
- Auto cable tensioning system
- 25° angle drilling package and mast locks
- Winch system 1587 kg (3,500 lb) capacity
TOP DRIVE
- Single motor
- Rotation speed 0-100 rpm
- Up to 13 016 N·m (9,600 ft-lb) torque
OPERATOR'S CAB
- Integrated FOPS
- Totally enclosed, insulated, two-man cab
- Two (2) hinged doors with heavy duty freezer type door latch system
- Ten (10) windows (safety glass, tinted)
- Windshield wiper and washer kit
- Ergonomic operator’s console with full instrumentation
- Ergonomic operator’s seat with head and armrests, retractable seat belt, air suspension mount
- Electric over hydraulic drill functions
- Auxiliary functions operated by fingertip toggle switches
- More than 3 m2 (32.4 ft2) of floor space
- Excellent visibility
- dB rating of 80 or less
- Wall mounted air conditioner/heater/pressurizer, belt driven
- Rubber shock-mounts to absorb vibration
- Electric horn activated by push button in the cab
- Gel cell maintenance free battery
- Document holder inside the cab
UNDERCARRIAGE
- Excavator type, with 12 lower rollers
- 750 mm (29.5 in) triple grousers
- Full length chain guides/rock guards
MAINFRAME AND DECK
- Made of heavily cross-braced rectangular steel tubing
- Rear deck is stationary during both angle and vertical drilling modes
- Viewing hatch in rear deck, hydraulically operated from cab to help spotting holes
- Four (4) hydraulic leveling jacks (152 cm/60 in)
- Dust chamber clean-out door
- Centralized lubrication system (34 points)
- Additional mast rests mounted on non-drill end
- 1325 L (350 gal) fuel tank under engine: - Additional fuel tank available as option
- 1570 L (415 gal) additional fuel tank under compressor
- 4 × 8D batteries
CAROUSEL
- Hydraulically operated from the cab
COOLING - SPLIT COOLER ARRANGEMENT
- Maximum ambient cooling capacity of 52° C (125° F) with replaceable cores
HYDRAULIC SYSTEM
- Two (2) variable displacement axial piston pumps, in closed loop system, that operate the drill rotation, pulldown/hoist system, and tram functions
- Double-gear pump, in open loop system, for all auxiliary functions and fan circuit
- Dual filtration
DRILLING ACCESSORIES (TRICONE/ROTARY)
- Top sub adapter
- Table bushing
- Bit sub [note: 12 m/39 ft configuration: 342 cm (135 in) S-S, 15 m/49 ft configuration: 152 cm (60 in) S-S]
- Horseshoe bushing
- Bit basket
- Hoist plug (lifting bail)
- Auto tool wrench/deck wrench
DUST SYSTEM
- See Optional Equipment and select the required system
PAINT
- Standard Caterpillar Colors
OTHER
- Backup alarm
- Filter kit for 50-hour preventive maintenance
- Two (2) hard copy sets Operator/Service/Maintenance/Parts/Engine manuals, in English
- One Link-One Parts manual on CD, Operator and Service manual in pdf
- Seven (7) 60-watt LED lights for night drilling
- Side walkways and handrails with side boarding ladder
- Tool box, mounted under walkway (tools not included)
- Lift kit
- Towing hooks (front end)
- Battery disconnect

DRILLING ACCESSORIES KIT FOR HAMMER DRILLING (IN LIEU OF ROTARY DRILL ACCESSORIES)
- Shock sub and adaptor, bit sub, two-piece table bushing, horseshoe bushing, hoist plug, bit basket, hammer oil injection system with 113.5 L (30 gal) tank
DUST COLLECTION
- Dust Collector 4500 Series
- Water injection system for dust suppression with three (3) tanks totaling 1271 L (336 gal) mounted under the front deck
- Water injection system for dust suppression with total 1514 L (400 gal) tank mounted on top-deck (mounted in place of Dry Dust Collector)
- Note: Dry Dust Collector and water injection on the same drill can be selected only with below deck tanks.
DRILLING
- Drill pipe
- Roller deck bushing
- Two-piece (split) deck bushing
- Rotary head RPM gauge, digital
- Rotary torque control
- Rotary/hammer shock sub
- Rock oiler injection system (for Tricone); 113.56 L (30 gal)
- Pipe guide roller assembly mounted on drill deck (rear deck)
- Dual purpose carousel (hammer - Tricone pipe rack)
FLUIDS
- Wiggins fuel only
- Wiggins full service (fuel, hydraulic oil, coolant, engine oil)
- Automatic lubrication system (34 points)
- Drilling pipe thread lube system, activated from inside the cab
SYSTEM PROTECTION
- Additional loop filters between pumps and motors
- Hydraulic diagnostic test station
- Engine mounted stop
- Ground level engine shutdown
- Rotating beacons (one on mast crown, one on cab, one on front-end)
COLD WEATHER AIDS
- WEBASTO system (self-contained heater for engine coolant, water, hydraulic oil, fuel)
- Cab floor heater (electric fan with heater core utilizing engine coolant)
- Heating and circulation/drainage system for water injection installation, for -40° C (-40° F) with gate valve activated by temperature sensor
- Cold weather package for temperatures down to -40° C (-40° F): - Two-speed fan arrangement for coolers - Electric heating elements for heating of fuel and water tanks, coolant, hydraulic oil tank - Insulation of bottom of the cab and fuel tanks - Compressor regulators enclosed in insulated box with electric heating element - Inlet control cylinder enclosed in a box with electric heating element - Cab floor heater - electric fan with heater core utilizing engine coolant - Thermo-glass in cab - Dead-end arctic hoses @ pivot points - Cold weather lubricants - Water injection hose (if water injection selected) with insulated sheath-electric heater - 40 kW (54 hp) diesel gen-set or on-board transformer to power heating package (mine site to provide plug)
INDICATOR SYSTEMS
- Mast lock indicator
- Jack retract indicators
- Tram interlock, jacks (with indicator)
- Tram interlock, head-position (pipe-in-hole)
- Pipe rack interlock
- Filter indicators, centrally mounted in cab (hydraulic, compressor, air intake)
MISCELLANEOUS
- 24 to 12 volt converter
- Extra lighting package (5 additional 60 watt LED lights)
- Blowdown hose with nozzle
- Hydraulic rear dust curtain lifting system
- Hydraulic front dust curtain lifting system
- CE conformity kit
- Special paint
- Closed circuit camera system with two cameras for front and rear mounting and monitor in cab
- Radio AM/FM, CD player and USB port for I-pod
- Radio C.B. with antenna
- XIR cab glass upgrade
- Thermal double-pane glass upgrade
- Cab window shades
- Remote jump start terminals
- Electric horn activated by push button in the cab
- Gel-cell maintenance free battery upgrade
- Main drill window cage
- Lanyard attachment - cable with traveling hook on mast, and personnel harness
- Tram remote control (pendant/cable) for operation of tram controls from ground
- Winch remote control pendant (control outside cab)
- 24V to 110V or 220V AC invertor
- Mechanical tool kit (reference TV014590)
- Three-point harness kit for operator’s seat
- Water injection flow meter
- Cab manometer
- Extreme hot weather lubricant upgrade (compressor oil)
- Extreme hot weather lubricant upgrade (hydraulic oil)
- Basic engine shut down timer
- Murphy EMS panel mounted in cab-dash
- EMS lap top harness/terminal mounted inside cab
- Mirror kit (includes three bolt-on mirrors)
- Slope indicator mounted in cab to indicate forward and lateral angle
- Hydraulic oil temperature gauge mounted in dash
- Document holder mounted inside the cab