Cat®

MD6240Rotary Blasthole Drills (12 or 15 m Mast)

Specifications

Rated CapacityBit/hole diameter 152-270 mm (6-10.625 in)Depth single-pass (12 m mast) Up to 12.80 m (42 ft) Depth multi-pass Up to 55.47 m (182 ft)Depth single-pass (15 m mast) Up to 15.85 m (52 ft) Depth multi-pass Up to 31.08 m (102 ft)

Operating TemperatureMin. ambient rating (standard) -28°C (-20°F)Cold weather option -40°C (-40°F)Max. ambient rating (standard) 52°C (125°F)Altitude Up to 4 572 m (15,000 ft)

Pull-down/Hoisting CapacityRated pull-down capacity Up to 222 kN (50,000 lbf)Rated hoist capacity Up to 222 kN (50,000 lbf)Drilling feed /Retract rate 0-38.1 m/min (0-125 fpm)Type Closed-loop, hydraulic (stationary rod, moving barrel)Number of cylinders 1 Pull-down cylinder stroke (12 meter) 7.27 m (286.2 in)Head travel (12 meter) 14.54 m (572.4 in)Pull-down cylinder stroke (15 meter) 8.80 m (346.5 in)Head travel (15 meter) 17.60 m (693.0 in)Cylinder bore 165 mm (6.5 in) diameterCylinder rod 102 mm (4 in) diameterCable type 25 mm (1 in) DYFORM 8Cable sheaves (cylinder) 406 mm (16 in) ODCable sheaves (top and bottom) 508 mm (20 in) ODSheave guards Standard at bottom plateAdjustable head guide shoes Steel with replaceable NylatronAutomatic cable Hydraulic cylinder, tensioning system powered by fan circuit

Rotary Blasthole Drill—MD6240

Rotary Drive SystemRotation speed 0-220 rpmTorque 0-12 880 Nm (0-9,500 ft-lb)Horsepower capacity 139 kW (186 hp)Gearbox Casting designMain thrust bearing Taper rollerLubrication Oil-floodedGearing Straight SpurRatio 16:1Drive motor See Hydraulic System

Cooler AssemblyFor Cat® C27 or Cummins QST-30 Engines–Split CoolersAir-finned, three- or four-core, radiator/hydraulic stacked, compressor separateRadiator/hydraulic cooler height/width 1 473 mm (58 in)/1 473 mm (58 in)Compressor cooler height/width 1 829 mm (72 in)/1 626 mm (64 in)Fan 1 219 mm (48 in) diam. one fan per cooler, 10 bladesFan speed Maximum 1,525 rpmFan guard WeldedEngine radiator, top tank Sealed deaeriation tank, pressure cap, overflow tube and sight glassStandard ambient rating 52˚ C (125˚ F)

Rotary Blasthole Drill—MD6240Compressor

Compressor (Standard)Type Oil-flooded, single-stage screw Discharge air flow (sea level) 48 m3/min (1,700 cfm) Max operating pressure 6.9 bar (100 psi)Air cleaner Type Dry-type with safety element Model SRG 20Oil cooling Air-to-oil cooler, thermostatically controlledOil separation Vertical barrier element, pre-separation in 189 l (50 gal) horizontal sump (T-tank)Oil filtration 12 micron replaceable element Drive Direct coupled to engine flywheel Controls Automatic with safety shut-down Air shut-off Hydraulic cylinder-operated from operator’s seat

Compressor (Optional)Type (high pressure) Oil-flooded, two-stage screw Discharge air flow (sea level) 33 m3/min (1,150 cfm); 38 m3/min (1,350 cfm); 43 m3/min (1,500 cfm) Max operating pressure 10.3/24.1 bar (150/350 psi) Air cleaner Dry-type with safety element/ SRG 29

Compressor (Optional)Type (high pressure) Oil-flooded, two-stage screw Discharge air flow (sea level) 33 m3/min (1,150 cfm); 38 m3/min (1,350 cfm); 43 m3/min (1,500 cfm) Max operating pressure 10.3/24.1/34.5 bar (150/350/500 psi) Air cleaner Dry-type with safety element/ SRG 29

Engine

Engine (Standard)Manufacturer Caterpillar Model C27 Tier II Rated horsepower 597 kW (800 hp) Full load 2,100 rpmStarting system 24 V DCSafety shut-down system Energized to runAir cleaner Type Dry-type with safety element Model SRG 20Batteries Four (4) 8-D

Engine (continued)Muffler 127 mm (5 in) inlet and outletMuffler guard 10 ga. for personal protectionJacket water cooling/CAC RadiatorFuel tank 1 325 l (350 gal), optional tank 1 571 l (415 gal)Turbo and manifold covers Blankets and/or exhaust wrap

Engine (Optional)Manufacturer Cummins Model QST-30 (Non-Cert) Rated horsepower 783 kW (1,050 hp) Full load 2,100 rpmStarting system 24 V DCSafety shut-down system Energized to runAir cleaner Type Dry-type with safety element Model SRG 29Batteries Four (4) 8-DMuffler 127 mm (5 in) inlet and outletMuffler guard 10 ga. for personal protectionJacket water cooling RadiatorFuel tank 1 325 l (350 gal), optional tank 1 571 l (415 gal)Turbo and manifold covers Blankets and/or exhaust wrap

Engine (Optional)Manufacturer Cummins Model QST-30 (Tier II) Rated horsepower 783 kW (1,050 hp) Full load 2,100 rpmStarting system 24 V DCSafety shut-down system Energized to runAir cleaner Type Dry-type with safety element Model SRG 29Batteries Four (4) 8-DMuffler 127 mm (5 in) inlet and outletMuffler guard 10 ga. for personal protectionJacket water cooling/CAC RadiatorFuel tank 1 325 l (350 gal), optional tank 1 571 l (415 gal)Turbo and manifold covers Blankets and/or exhaust wrap

Engine (Optional)Manufacturer Caterpillar Model C27 Tier II Rated horsepower 652 kW (875 hp) Full load 2,100 rpmStarting system 24 V DCSafety shut-down system Energized to run

Rotary Blasthole Drill—MD6240Engine (continued) Air cleaner Type Dry-type with safety element Model SRG 20Batteries Four (4) 8-DMuffler 127 mm (5 in) inlet and outletMuffler guard 10 ga. for personal protectionJacket water cooling/CAC RadiatorFuel tank 1 325 l (350 gal), optional tank 1 571 l (415 gal)Turbo and manifold covers Blankets and/or exhaust wrap

MastConstruction ASTM 500 grade B rectangular tubing, weldedMain cord size Front 203 mm x 102 mm x 6 mm (8 in x 4 in x 0.25 in); Rear 102 mm x 102 mm x 13 mm (4 in x 4 in x 0.5 in)Pivot and raising area Rectangular tubing A frame; reinforced in high-stress areasHydraulic lines Pressure-rated steel hydraulic tubingHose tray Sheet steel trough for moving hosesTable hole diameter 279 mm (11 in) diameter deck hole for guide bushing

Mast-Elevating CylindersNumber of cylinders 2Cylinder bore 203 mm (8 in) diameterCylinder rod 102 mm (4 in) diameterCylinder stroke 1 082 mm (42.6 in)Lift capacity each cylinder 556 kN (125,065 lbf) Cylinder connections pins 57 mm (2.25 in) diameter

Operator’s CabLocation To the right from the mast if facing rear deck from the rear endType Shock-mounted; two-man, integrated FOPS certifiedLength at floor 1 981 mm (78 in)Width at floor 1 518 mm (59.75 in)Floor area 3 m2 (32.4 ft2)Height inside 1 943 mm (76.5 in)Construction 12 ga. steel welded to formed 12 ga. channel and angle supportsWindows 6 mm (0.25 in) tinted safety glass in rubber mountingNumber of windows 10Number of doors 2 with windows (included above)Left door to work deck Swing-type HD hingeRight door Swing-type HD hinge

Operator’s Cab (continued)Operator’s seat One swivel-type with armrests, headrest and retractable seatbeltHelper’s seat Fixed folding jump seatInsulation, wall and ceiling 25 mm (1 in) thermalInsulation, floor 10 mm (0.375 in) closed cell foam with 3 mm (0.125 in) pyramid vinyl surfaceDoor latches Heavy-duty latches with lockable handlesSound levels 80dB(A) or lessClimate control Wall-mounted, AC/heating/ pressurizing unitOther Window wipers and washers

Operator’s ControlsLocation Console at front and side cab wall, placed 45˚ to the deck

Standard Engine ControlsCoolant temperature/high temperature shut-offOil pressure (low pressure shut-off)Auto shut-down bypassStart buttonStop buttonTachometerThrottle controlEngine hourmeterFuel levelVoltmeter

Standard Compressor ControlsCompressor temperatureAir pressure gaugeAir shut-off control (electric) (high air temperature)

Standard Drilling ControlsLeveling jacks controls (hydraulic)HOBO/Break-out wrench control (electric)Mast elevation control (hydraulic)Pull-down control (electric over hydraulic)Pull-down pressure control (pilot hydraulic)Rotation control (electric over hydraulic)Propel controls (electric over hydraulic)Carousel in/out control (electric)Carousel indexing control (electric)Carousel indexing (electric)Mast lock (electric)Dust/water injection (electric)Dust curtain (electric)

Rotary Blasthole Drill—MD6240Operator’s Controls (continued)Deck wrench control (electric)Level indicator (bubble)On/off light switch (electric)Drill hourmeter (gauge)Wiper/washer controls (electric)

OptionalFilter indicators for engine and compressor intake, filter indicators for hydraulic fluid system, indicator lights for interlocks, rotary head rpm gauge and heating systems control

UndercarriageType Excavator typePad width 750 mm (29.5 in)Pad type Triple grouserRollers Sealed, oil-floodedNumber of lower rollers 12Upper track chain support Two (2) carrier rollersRock guards/chain guides Standard full-length guardsOverall length 5 705 mm (224.6 in)Width over tracks 3 912 mm (154 in)Final drive Independent hydrostatic motorsDrive horsepower per track Maximum 152 kW (204 hp)Brakes Spring set, hydraulic releaseBrake release AutomaticTram speed max 2.0 km/h (1.25 mph)Gradeability mast down 66%Rear axle 203 mm (8 in) solidFront Three-point oscillating typeTrack adjustment means Hydraulic with grease gunTrack drive disconnect Standard (manual)

Main FrameMain rails 203 mm x 406 mm x 13 mm (8 in x 16 in x 0.5 in) ASTM 500 grade B Rectangular tubing heavily cross-braced and reinforced at high-stress areasConstruction Electric weldedJacks, mast pivot and deck Welded integrally to main frameToolbox Lockable door, below front deckMachine deck Access both sidesHandrails 48 mm (1.9 in) diameter x 1 219 mm (48 in) highTow hooks Welded, two (2) front

Main Frame (continued)

Leveling JacksNumber 4Location 2 front; 2 rearCylinder bore 140 mm (5.5 in)Cylinder rod diameter 76 mm (3 in)Cylinder stroke 1 524 mm (60 in)Lift capacity 290 kN (65,300 lbf)Pad connection Link padPad diameter 610 mm (24 in)Counterbalance valves Internal at each cylinderInner extension boot 219 mm (8.625 in) OD, 8 mm (0.322 in) wall

Drill Table & Work DeckTable height off ground 1 321 mm (52 in)Deck floor material Non-skid sheet metalDrill deck length 2 661 mm (104.75 in)Drill deck width 2 578 mm (101.5 in)Drill deck area 6.8 m2 (73.8 ft2)Hand rails 48 mm (1.9 in) diameter x 1 219 mm (48 in) high

Dust Curtain (Optional Hydraulic Lifters, Front and Rear)Material 6 mm (0.25 in) rubber nylon reinforcedEnclosed area 4.2 m2 (45.14 ft2)Split for excess Front and rear with 305 mm (12 in) overlapDust deflector Natural rubber seal, 13 mm (0.5 in) thick, 356 mm (14 in) diam.Location Directly below table bushing

Hydraulic System

Left Track/Rotation Pump (Closed-loop)Type Axial piston, variable volumeMax flow 283 l/min (75 gpm)Pressure rating 400 bar (5,800 psi)

Right Track/Feed Pump (Closed-loop)Type Axial piston, variable volumeMax flow 283 l/min (75 gpm)Pressure rating 400 bar (5,800 psi)

Rotary Blasthole Drill—MD6240Hydraulic System (continued)

Fan/Accessory Circuit Pump (Open-loop)Type Axial piston, variable volumeMax flow 273 l/min (72 gpm) dual fan (one per cooler)Pressure rating 345 bar (5,000 psi)

Track Drive Motors (2)Type Bent-axis fixed volumePressure rating 414 bar (6,000 psi)

Rotation Drive MotorType Axial piston variable volumePressure rating 345 bar (5,000 psi)

Fan Drive Motor(s)-Single FanType PistonPressure rating 414 bar continuous (6,000 psi) Pump Drive GearboxType 3 padDrive Rubber coupler/drive shaft to front of engine

Filtration (All filters have indicators and bypass)Loop 12 micron, 2 per loop (optional)Charge 3 micron, 1 per loopMain return 12 micron absoluteCase return 12 micron

Oil Cooling System (Hydraulic Tank)Reservoir 643 l (170 gal) with sight and temperature gaugeReservoir pressure Atmospheric, filtered breather

LubricationCentralized manual (optional auto-lubrication)

Accessories, Tools & Handling Equipment

Drill Pipe (Optional, Price-Adder)12-meter mast arrangement Diameter Customer specification 114 m-178 mm (4.5-7.0 in) Wall thickness 19 mm (0.75 in) Length 10.67 m (35 ft) Threads Depends on pipe diameter

Accessories, Tools & Handling Equipment (continued)

Diameter Wall thickness Thread Pipe Length114 mm (4.5 in) 19 mm (0.75 in) 3 Beco 10.67 m (35 ft)127 mm (5 in) 19 mm (0.75 in) 3.5 Beco 10.67 m (35 ft)140 mm (5.5 in) 19 mm (0.75 in) 4 Beco 10.67 m (35 ft)152 mm (6 in) 19 mm (0.75 in) 4.5 Beco 10.67 m (35 ft)165 mm (6.5 in) 19 mm (0.75 in) 4.5 Beco 10.67 m (35 ft)178 mm (7 in) 19 mm (0.75 in) 4.5 Beco 10.67 m (35 ft)15-meter mast arrangement Diameter Customer specification 114 m-178 mm (4.5-7.0 in) Wall thickness 19 mm (0.75 in) Length 7.62 m (25 ft) Threads Depends on pipe diameterDiameter Wall thickness Thread Pipe Length114 mm (4.5 in) 19 mm (0.75 in 3 Beco 7.62 m (25 ft)127 mm (5 in) 19 mm (0.75 in) 3.5 Beco 7.62 m (25 ft)140 mm (5.5 in) 19 mm (0.75 in) 4 Beco 7.62 m (25 ft)152 mm (6 in) 19 mm (0.75 in) 4.5 Beco 7.62 m (25 ft)165 mm (6.5 in) 19 mm (0.75 in) 4.5 Beco 7.62 m (25 ft)178 mm (7 in) 19 mm (0.75 in) 4.5 Beco 7.62 m (25 ft

Top Adapter SubDiameter Depends on pipe diameterLength 711 mm (28 in)Top thread 140 mm (5.5 in) API Reg.Bottom thread Depends on pipe diameter

Bit SubDiameter Depends on pipe diameterLength Up to 3 429 mm (135 in)Top thread Depends on pipe diameterBottom thread Depends on pipe diameterTable bushing One (1) piece insert, roller deck bushing or two-piece

Deck WrenchLocation Drill deckWrench plate 76 mm (3 in) T1- SteelWrench positioning Hydraulic cylinderImpact means Stationary jaw

HOBO Break-Out WrenchLocation Outside mast, under pipe rackSupport PivotWrench type Patented HOBO (Hydraulically Operated Break-Out)Power Hydraulic cylinders

Rotary Blasthole Drill—MD6240

Basic Shipping Weights and Dimensions Quantity Description of Goods Approximate DimensionsTruck one (1) Model MD6240 (12 m), Rotary Blasthole drill c/w Owner/Operator’s 10.82 m (35 ft 6 in) L x manual stowed in cab 4.0 m (13 ft 2 in) W x 3.9 m (12 ft 7 in) H 44 678.5 kg (98,500 lb)Truck two (2) Mast assembly for Model MD6240 (12 m), Rotary Blasthole drill 17.7 m (58 ft) L x 1.9 m (6 ft 4 in) W x 1.8 m (6 ft 2 in) H 16 329.3 kg (36,000 lb)Truck three (3) Cab half assembly for Model MD6240 (12 m), Rotary Blasthole drill c/w 2.29 m (7 ft 6 in) L x 1ea. #89044 filter kit, 2 ea. Superflex, 2 ea. brackets, 2 ea. mast bushings, 0.81 m (32 in) W x 2 ea. dust chute c/w curtain, 2 ea. clamps, 1 ea. horseshoe bushing, 2.51 m (8 ft 2 in) H 1 ea. bit basket, 1 ea. lifting bale, 2 ea. portable fire suppression w/brackets, 635 kg (1,400 lb) 3 ea. bag of nuts, bolts, 6 ea. handrails, 1 ea. table bushing and cab supportsTruck three (3) 2 each walkways bundled together with 2 each ladders, toolbox, c/w with 5.1 m (16 ft 7 in) L x accessories stowed within, bit sub, dust chute hose and 2 each chutes for 0.9 m (3 ft 2 in) W x hose for MD6240 (12 m) 1.5 m (5 ft) H 2 948.3 kg (6,500 lb)Truck three (3) Mast support rack (mounted off front end) for MD6240 (12 m) 2.9 m (9 ft 6 in) L x 2.2 m (7 ft 2 in) W x 0.4 m (15 in) H 548.8 kg (1,210 lb)Truck three (3) 1 each walkway 2.87 m (9 ft 4 in) L x 0.61 m (2 ft) W x 1.20 m (4 ft 3 in) H 544.81 kg (1,200 lb)

Pipe Rack (Ouside the mast)Type Carousel, with stationary pods and breaker platesSize of drill pipe/capacity 114-178 mm (4.5-7 in)12-meter mast arrangement (4 pod)15-meter mast arrangement (2 pod)Length of drill pipe 10.67 m (35 ft) for 12 meter mast, 7.62 m (25 ft) for 15 meter mastPipe rack swing Hydraulic cylinders (2)Pipe rack index Hydraulic motor through chain driveLocation Outside mastMounting Upper, lower pillow-block bearing

WinchRating 3 629 kg (8,000 lb)Cable size 13 mm (0.5 in)Safety hook Swivel-type positive lock

Note: Final dimensions, GVW and corresponding load-out vary based on options selected and final configuration. Performance ratings are based on 100% efficiency, and on engineering specifications and calculations in accordance with accepted industry standards. These capacities will vary with drilling conditions. All specifications are subject to change without notice.

Rotary Blasthole Drill—MD6240

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