The Cat® MD6250 is built from the ground up with 100% Cat parts to help you get the most out of your operation. With built-in autonomous features and the option to integrate Cat MineStar™ technologies, the MD6250 offers accurate, reliable performance in any drilling application. It’s easy to own and operate, with improved serviceability and the reliable performance you expect from Caterpillar — backed by the world-class support of the Cat dealer network. Designed to drill holes from 152-250 mm (6-9.8 in) in diameter, the MD6250 is is optimized for single-pass or multi-pass drilling in both rotary and down-the-hole drilling modes.
Pull-Down Capacity | Up to 29 483 kg (65,000 lb) |
Hole Diameter | 165-250 mm (6.5-9.88 in) |
Engine | Cat® C27 |
Pull-Down Capacity | Up to 29 483 kg (65,000 lb) |
Hole Diameter | 165-250 mm (6.5-9.88 in) |
Engine | Cat® C27 |
Bit Load | Up to 32 655 kg (Up to 71,993 lb) |
Components (1) | Dual starter motors |
Components (2) | Ether starting aid (ether bottle supplied locally) |
Features | Scheduled Oil Sampling (S·O·SSM) ports |
Emissions: Equivalent to U.S. EPA Tier 4 Final - ISO 14396 | — |
Emissions: Equivalent to U.S. EPA Tier 4 Final - ISO 14396 (DIN) | 884 mhp (PS) |
Emissions: Equivalent to U.S. EPA Tier 2 - ISO 14396 (DIN) | 838 mhp (PS) |
Emissions: Equivalent to U.S. EPA Tier 2 - ISO 14396 | — |
Emissions: Equivalent to U.S. EPA Tier 2 - Engine Power | C27 @ 1,800 rpm |
Emissions: Equivalent to U.S. EPA Tier 4 Final - Engine Power | C27 @ 1,800 rpm |
Components (1) | Coolers with easy cleaning access |
Components (2) | Separate engine cooling module |
Components (3) | All cooler core sections are replaceable |
Components (4) | Automatic variable speed fan control |
Features | Functional in ambient temperature of 52° C (125° F) |
Climate Level 1 Standard Fluids and Lubricants (1) | Rated down to –1° C (30° F) |
Climate Level 1 Standard Fluids and Lubricants (2) | Withstands high heat to 52° C (125° F) |
Climate Level 2 Arctic Fluids and Lubricants | Rated down to –18° C (–0.4° F) |
Climate Level 4 Arctic Fluids and Lubricants (1) | Rated down to –40° C (–40° F) |
Climate Level 4 Arctic Fluids and Lubricants (2) | Diesel fired heating system that heats and circulates engine coolant through engine block, below deck water tank, heating elements for battery trays |
Climate Level 4 Arctic Fluids and Lubricants (3) | Full Arctic lubricant package to include engine and hydraulic oil |
Climate Level 4 Arctic Fluids and Lubricants (4) | Electric heating package with breaker panel to power: 120V heating blanket for compressor receiver tank, heat trace for hosing from water tank to water pump and water fast-fill assembly, plus primary tank |
Climate Level 4 Arctic Fluids and Lubricants (5) | Shore power connection box with switchable 240-600V (50 amp) connection (diesel gen set and/or plug supplied locally). Box includes standard 50 hz battery charger, if 60 hz charger required, to be ordered via after market, refer to P-n 540-4271 |
Climate Level 4 Arctic fluids and lubricants (6) | Breaker panel includes five (5) additional breakers for locally supplied heating elements if needed |
Batteries, Sealed (1) | Quantity: Four (4) |
Batteries, Sealed (2) | Quantity: Six (6) (required for cold weather Level 2 and 4 and/or semi autonomy packages) |
Features (1) | Leveling Jacks, A-frame/mast pivot and drill deck are welded integrally to mainframe for maximum durability and long life |
Features (2) | Primary fuel tank capacity 1416 L (374 gal) |
Features (3) | Fuel capacity expansion for additional 1416 L (374 gal) optional for total capacity of 2832 L (748 gal); (required for autonomy packages) |
Features (4) | Three (3) egress points on deck areas in addition to main access |
Components (1) | Stationary drill deck; for vertical and angle drilling |
Components (2) | Four leveling jacks provide leveling on a 7° bench (any orientation) |
Components (3) | Heavy duty tow hooks (front end) |
Components (4) | Four (4) lift lugs, for use with cables or chains |
Components (5) | Fixed access stairs to the cab area |
Components (6) | Sturdy guardrails with toe guards, self-closing gates |
Model | Cat® 336E EL Excavator type |
Carrier Rollers | Three (3) |
Track chain guards and guides | Level two |
Drawbar Pull | — |
Triple Grousers (1) | 600 mm (23.6 in); for hard rock; 0.88 bar (12.7 psi) ground bearing pressure |
Triple Grousers (2) | 750 mm (29.5 in); for soft rock; 1.10 bar (15.9 psi) ground bearing pressure |
Lower rollers | Twelve (12) |
Travel Speed | — |
Components (1) | Two (2) primary pumps – 145 cc (piston, with proportional electronic controls) |
Components (2) | One (1) auxiliary circuit pump – 110 cc (piston, load sensing) |
Components (3) | Two (2) fan pumps – 74 cc (piston, with proportional electronic controls) |
Components (4) | Two (2) charge pumps – 43.9 + 56.5 cc (double stack gear, fixed displacement) |
Components (5) | Scheduled Oil Sampling (S·O·S) ports |
Width Non-Cab End | — |
Width Cab End | — |
Note | Width and length dimensions include: cascading stairs and walk-around access for cab. |
Mast Only Shipping Length | — |
Height - Mast Up | — |
Body Length | — |
Length - Mast Down | — |
Height - Mast Down | — |
Variable Grip Hydraulic Break Out Wrench Grip Ranges (1) | 114-152 mm (4.5-6.0 in) |
Variable Grip Hydraulic Break Out Wrench Grip Ranges (2) | 152-216 mm (6.0-8.5 in) |
Components (7) | Pipe wiper seal |
Components (8) | Drill tool lubricator is included with selection of DTH Compressor |
Components (1) | Two-piece roller deck bushing |
Components (2) | Pipe positioner rollers |
Components (3) | Deck wrench |
Components (4) | Shock sub |
Components (5) | Top Sub |
Components (6) | Hammer Sub |
Feature | Approach angle of 15 degrees facilitates loading and unloading on a lowboy |
Components (13) | Lifting lugs |
Components (1) | Alloy drill deck covers, for servicing when mast is horizontal |
Components (2) | Seven (7) engine shut down buttons, by each drill egress/access point, in cab, in engine area, on drill deck |
Components (3) | Over forty (40) conditional safety interlocks |
Components (4) | Hinged window guard over the full length of the front drill window |
Components (5) | Three (3) egress points on deck areas in addition to main access |
Components (6) | Self-closing gates secure egress ladder locations |
Components (7) | Electric horn activated by push button in the cab |
Components (8) | Automatic tram alarm, audible |
Components (9) | Under deck mounted battery box with keyed battery disconnect/starter disconnect/remote jump start terminals |
Components (10) | Compressor air hoses with safety retention cables |
Components (11) | Slip resistant surfaces |
Components (12) | Tow hooks on non-drill-end |
Cab - Premium | – Additional storage<br>– Leather seat with heat and ventilation<br>– Heavy duty seat suspension<br>– Dual pane window glass<br>– Removable guard for driller window, plus window facing power train<br>– Wipers for the driller window plus front and rear windows |
Cab - Standard | – Fabric seat<br>– Single pane window glass<br>– Removable guard for driller window<br>– Wiper for the driller window |
Cab Design | – Spacious FOPS cab is 3 m² (32.3 ft²) with an integrated operator station<br>– Cab rubber shock-mounts<br>– Operator station design integrates an ergonomic seat, joystick controls with full instrumentation, and dual 254 mm (10 in) color displays, high definition touchscreen and 12-volt power port<br>– Additional display screen for cc cameras; color, high-definition 254 mm (10 in)<br>– Three (3) cc cameras (front and left side) providing 360° vision coverage from operators seat; camera in the mast to view pipe rack carousel/top drive operation<br>– Power convertor 24V to 12V<br>– Radio-ready for communication and entertainment stereo<br>– Two swing-out doors and Cat keyed locks<br>– Literature holder<br>– Removable floor mat |
Seating | – Seat swivels, locks and retractable, two-point/76 mm (3 in) wide seat belt, tilts (5° adjustment), lumbar support, fore/aft seat adjustment 80 mm (3.1 in) |
Windows | – Large windows front, rear and right cab side; full length drill window with guard<br>– Windshield wipers with a common washer tank |
Lighting | – LED interior lights and map light at operators seat, backlit joysticks and keypads<br>– Flood lights for the drill perimeter<br>– Spotlights for power group area; drill deck; mast carousel; access ladder and walkways<br>– Lighting package includes 4,200 lumens flood light on perimeter, mast clearance lights, cab mounted strobe, front mounted tram beacon |
HVAC | – Floor heating vent<br>– Roof-mounted air conditioner/heating/pressurizing unit<br>– Filter access from deck<br>– Defogging HVAC vents on main window |
Components (22) | Prewired for Terrain and autonomous operation |
Components (23) | Drill Assist automated functionality:<br>– Auto level, auto jack retract<br>– Auto mast raise and lock, auto mast unlock and park |
Components (1) | All electric controls for drilling, tramming, leveling plus auxiliary functions |
Components (2) | Electronic compressor control |
Components (3) | Rotary torque control |
Components (4) | Virtual rotary head travel stops and interlocks |
Components (5) | Pipe positioner engaged/disengaged indicator |
Components (6) | Drill depth meter |
Components (7) | Drill performance and drill health display system |
Components (8) | Data logging of machine health with warnings and fault code records with export capability |
Components (9) | Delayed engine shut down |
Components (10) | Rotary head rpm gauge (digital display in screen) |
Components (11) | Filter indicators for hydraulic, fuel, compressor and engine |
Components (12) | Jack pressure sensors in display |
Components (13) | Dust suppression control |
Components (14) | Mast lock indicator |
Components (15) | ECM proportional fan speed control system |
Components (16) | Tram interlock, machine stability limits |
Components (17) | Tram interlock, pipe in hole |
Components (18) | Tram interlock, mast up and locked or down and parked |
Components (19) | Tram interlock, jack retracted |
Components (20) | Tram interlock, winch parked |
Components (21) | Cab environment controls (AC, filter, heat, fan speeds) |
Width Non-Cab End | — |
Width Cab End | — |
Note | Width and length dimensions include: cascading stairs and walk-around access for cab. |
Mast Only Shipping Length | — |
Height - Mast Up | — |
Body Length | — |
Length - Mast Down | — |
Height - Mast Down | — |
Receiver Tank Choice (1) | Low pressure 8.6 bar (125 psi) for ASME/CRN/AU or CE |
Receiver Tank Choice (2) | High pressure 24.1 or 34.4 bar (350 or 500 psi) for ASME/CRN/AU or CE |
Compressor - Rotary Drilling | 56.6 m³/min (2,000 ft³/min) @ 8.6 bar (125 psi) |
Compressor - DTH Drilling (1) | 38.2 m³/min (1,350 ft³/min) @ 34.4 bar (500 psi) |
Compressor - DTH Drilling (2) | 42.4 m³/min (1,500 ft³/min) @ 24.1 bar (350 psi) |
Features (1) | With the compressor’s variable volume control, the operator can limit air output resulting in reduced fuel consumption |
Features (2) | Electronic compressor control and regulation |
Features (3) | DTH selection includes tool oiler |
Angle Drilling | Included with either mast |
Mast Accessories Manual - 11.2 m (36.7 ft) or 13.6 m (44.6 ft) Mast | One (1) wire rope pipe catcher, manual bit basket |
Mast Accessories Hydraulic - 11.2 m (36.7 ft) Mast | One (1) hydraulically actuated pipe catcher, hydraulically operated bit basket |
Mast Accessories Hydraulic - 13.6 m (44.6 ft) Mast | One (1) hydraulically actuated pipe catcher, plus one (1) wire rope pipe catcher, hydraulically operated bit basket |
Lifting Bails (Available on Request) | – API thread 89 mm (3.5 in) – to lift corresponding drill tools (6.75 in tricone bits or 6-inch class DTH hammers)<br>– API thread 114 mm (4.5 in) – to lift corresponding drill tooling (7.875 and 9.0 in tricone bits or 8-inch class DTH hammers)<br>– API thread 140 mm (5.5 in) – to lift shock sub adapter<br>– BECO thread 102 mm (4.0 in) – to lift corresponding drill pipe (5.5 in OD)<br>– BECO thread 114 mm (4.5 in) – to lift corresponding drill pipe (6.0, 6.5, 6.625 and 7.0 in OD)<br>– BECO thread 152 mm (6.0 in) – to lift corresponding drill pipe (7.625 in OD) |
6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast - holds quantity of four (4) - Option 4 | — |
6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast - holds quantity of four (4) - Option 1 | — |
6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast - holds quantity of four (4) - Option 6 | — |
10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast - holds quantity of four (4) - Option 1 | — |
6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast - holds quantity of four (4) - Option 3 | — |
10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast - holds quantity of four (4) - Option 6 | — |
10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast - holds quantity of four (4) - Option 4 | — |
10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast - holds quantity of four (4) - Option 3 | — |
10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast - holds quantity of four (4) - Option 2 | — |
10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast - holds quantity of four (4) - Option 5 | — |
6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast - holds quantity of four (4) - Option 2 | — |
6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast - holds quantity of four (4) - Option 5 | — |
Pipe rack carousel, standard: | – 11.2 m (36.7 ft) Mast: holds quantity of four (4) 10.6 m (35 ft) pipes<br>– 13.6 m (44.6 ft) Mast: holds quantity of four (4) 6.1 m (20 ft) pipes |
Features (7) | Sliding deck wrench assembly |
13.6 m (44.6 ft) Mast - Hole Diameter Range: 152-250 mm (6-9.875 in) - Single-Pass Depth | — |
Features (5) | Auto tensioning of pull down and hoist cables |
11.2 m (36.7 ft) Mast - Hoist Speed | — |
Features (3) | Drill strings configured for bit changes (above the deck) |
Features (1) | Mast configurations complete with pipe rack carousel and angle drilling package (vertical, out to 30 degrees in 5-degree increments) |
Features (8) | Configured with roller deck bushing for tricone applications, two-piece deck bushing for DTH |
Features (10) | Drill pipe positioner |
Features (11) | Rotation gear box with single motor up to 160 rpm, up to 11 700 N∙m (8,629 lbf-ft) torque |
Features (9) | Closed circuit camera in mast is used to view pipe rack carousel/top drive operation while racking pipes |
Features (6) | Variable grip hydraulic break out wrench for range of pipe diameters |
11.2 m (36.7 ft) Mast - Hole Diameter Range: 152-250 mm (6-9.875 in) - Multi-Pass Depth | Down to 53.9 m (Down to 176.7 ft) |
Features (4) | Single Hydraulic Cylinder and cable system for pulldown/hoist |
Features (2) | Hydraulically actuated, self-indexing pipe rack carousel accepts pipe diameters from 127 mm (5.0 in) to 194 mm (7.625 in) |
13.6 m (44.6 ft) Mast - Hole Diameter Range: 152-250 mm (6-9.875 in) - Multi-Pass Depth | Down to 37.9 m (Down to 124.6 ft) |
13.6 m (44.6 ft) Mast - Hoist Speed | — |
11.2 m (36.7 ft) Mast - Bit Load (single pass) | Up to 22 321 kg (Up to 49,210 lb) |
11.2 m (36.7 ft) Mast - Pull-Down Capacity | Up to 20 411 kg (Up to 45,000 lb) |
13.6 m (44.6 ft) Mast - Bit Load (single pass) | Up to 32 655 kg (Up to 71,993 lb) |
13.6 m (44.6 ft) Mast - Pull-Down Capacity | Up to 29 483 kg (Up to 65,000 lb) |
13.6 m (44.6 ft) Mast - Hoist Capacity | Up to 16 584 kg (Up to 36,563 lb) |
11.2 m (36.7 ft) Mast - Hoist Capacity | Up to 15 309 kg (Up to 33,750 lb) |
Components (1) | One-piece roller deck bushing |
Components (2) | Pipe positioner rollers |
Components (3) | Deck wrench |
Components (4) | Top sub |
Components (5) | Bit sub |
Components (6) | Pipe wiper seal |
Torque - Single Motor | — |
Rotation Speed | 0-160 rpm |
Components (1) | Spindle – 140 mm (5.5 in) API regular thread with splined collar |
Components (2) | Rotary torque control |
Components (3) | Virtual rotary head travel interlocks |
Type (1) | Cat Terrain ready |
Type (2) | Autonomy ready |
Components (1) | Drill depth indicator |
Components (2) | Product Link™ Elite (hardware from factory, subscription package via dealer) |
Choices (1) | Water injection – tank mounted below front deck 1271 L (336 gal)<br>– Water flow meter, volume control, tank fill level indicator |
Choices (2) | Water injection plus dry dust collector 127 m³/min (4,500 ft³/min) dust collector; includes standard water injection<br>– Self-cleaning filters, dust chute with ejector |
Choices (3) | High volume water injection (maximum) – tanks total capacity 2786 L (736 gal)<br>– Tank below deck (isolated for extreme cold weather) capacity 1271 L (336 gal)<br>– Tank above deck capacity 1514 L (400 gal) |
Choices (4) | Static dust curtains, four sided/boxed enclosed |
Package (1) | Fast fill for fuel and water, automated lubrication system |
Package (2) | Service center for lubricant drain and fill, automated lubrication system, fast fill fuel and water, blow down hose (option) |
Working Weight Range | 56 468 kg to 64 154 kg (124,490 lb to 141,436 lb) |
Data not available.