CAT MD6250 Technical Specifications

MD6250

Rotary Blasthole Drill

11.2 or 13.6 m
(36.7 or 44.6 ft)
Mast Con gurations

Technical Specifications

Con gurations and features may vary by region. Please consult your Cat® dealer for availability in your area.

Table of Contents

Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Engine Choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Compressor/Receiver Choices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Climate Choices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Frame and Work Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Undercarriage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Hydraulics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Mast and Pipe Rack Carousel Features . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Mast Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Carousel (mast size and pipe diameter dependent) . . . . . . . . . . . . . . . . .4

Hydraulic Break Out Wrench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Drill Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Tool Package Rotary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Tool Package DTH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Rotary Head Top Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Operator Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Operating System Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Automation and Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Dust Control Choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Service Packages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Safety and Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Standard and Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

MD6250 Rotary Blasthole Drill Specifications

Engine Choices

Emissions: Equivalent to U.S. EPA Tier 2

Engine Power C27 @ 1,800 rpm

ISO 14396 616 kW 826 hp

ISO 14396 (DIN) 838 mhp (PS)

Emissions: Equivalent to U.S. EPA Tier 4 Final

Engine Power C27 @ 1,800 rpm

ISO 14396 650 kW 872 hp

ISO 14396 (DIN) 884 mhp (PS)

• Dual starter motors

• Scheduled Oil Sampling (S·O·S

• Ether starting aid (ether bottle supplied locally)

SM

) ports

Compressor/Receiver Choices

Compressor

3

Rotary Drilling 56.6 m

DTH Drilling 38.2 m

DTH Drilling 42.4 m

• With the compressor’s variable volume control, the operator can
limit air output resulting in reduced fuel consumption

• Electronic compressor control and regulation

• DTH selection includes tool oiler

Receiver Tank Choices

• Low pressure 8.6 bar (125 psi) for ASME/CRN/AU or CE

• High pressure 24.1 or 34.4 bar (350 or 500 psi) for ASME/CRN/
AU or CE

/min (2,000 ft3/min)

@ 8.6 bar (125 psi)

3

/min (1,350 ft3/min)

@ 34.4 bar (500 psi)

3

/min (1,500 ft3/min)

@ 24.1 bar (350 psi)

Cooling

• Coolers with easy cleaning access

• Separate engine cooling module

• All cooler core sections are replaceable

• Functional in ambient temperature up to 52° C (125° F)

• Automatic variable speed fan control

Climate Choices

Climate Level 1 Standard Fluids and Lubricants

• Rated down to –1° C (30° F)

• 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

• Rated down to –40° C (–40° F)

• Diesel  red heating system that heats and circulates engine
coolant through engine block, below deck water tank, heating
elements for battery trays

• Full Arctic lubricant package to include engine and hydraulic oil

• 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- ll
assembly, plus primary tank

• 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

• Breaker panel includes  ve (5) additional breakers for locally
supplied heating elements if needed

Batteries, Sealed – Quantity: Four (4)

Batteries, Sealed – Quantity: Six (6) (required for cold weather
Level2 and 4 and/or semi autonomy packages)

2

MD6250 Rotary Blasthole Drill Specifications

Frame and Work Deck

• Leveling Jacks, A-frame/mast pivot and drill deck are welded
integrally to mainframe for maximum durability and long life

• Stationary drill deck; for vertical and angle drilling

• Four leveling jacks provide leveling on a 7° bench (anyorientation)

• Primary fuel tank capacity 1416 L (374 gal)

• Fuel capacity expansion for additional 1416 L (374 gal)
optionalfor total capacity of 2832 L (748 gal); (required for
autonomy packages)

• Three (3) egress points on deck areas in addition to main access

• Heavy duty tow hooks (front end)

• Four (4) lift lugs, for use with cables or chains

• Fixed access stairs to the cab area

• Sturdy guardrails with toe guards, self-closing gates

Undercarriage

Model Cat® 336E EL

Excavatortype

Lower Rollers Twelve (12)

Carrier Rollers Three (3)

Track Chain Guards and Guides Level two

Drawbar Pull 417 000 N 93,745 lbf

Travel Speed 2.45 kph 1.5 mph

Triple Grousers for Hard Rock; Ground
Bearing Pressure 0.88 bar (12.7 psi)

Triple Grousers for Soft Rock; Ground
Bearing Pressure 1.10 bar (15.9 psi)

600 mm 23.6 in

750 mm 29.5 in

Hydraulics

• Two (2) primary pumps – 145 cc (piston, with proportional
electronic controls)

• One (1) auxiliary circuit pump – 110 cc (piston, load sensing)

• Two (2) fan pumps – 74 cc (piston, with proportional
electroniccontrols)

• Two (2) charge pumps – 43.9 + 56.5 cc (double stack gear,
 xeddisplacement)

• Scheduled Oil Sampling (S·O·S) ports

Mast and Pipe Rack Carousel Features

11.2 m (36.7 ft) Mast

Hole Diameter Range 152-250 mm 6-9.875 in

Single-Pass Depth 11.2 m 36.7 ft

Multi-Pass Depth Down to 53.9 m Down to 176.7ft

Pull-Down Capacity Up to 20 411 kg Up to 45,000 lb

Hoist Capacity Up to 20 411 kg Up to 45,000 lb

Hoist Speed 0.81 m/sec 2.65 ft/sec

Bit Load (single pass) Up to 22 321 kg Up to 49,210 lb

13.6 m (44.6 ft) Mast

Hole Diameter Range 152-250 mm 6-9.875 in

Single-Pass Depth 13.6 m 44.6 ft

Multi-Pass Depth Down to 37.9 m Down to 124.6 ft

Pull-Down Capacity Up to 29 483 kg Up to 65,000 lb

Hoist Capacity Up to 22 113 kg Up to 48,750 lb

Hoist Speed 0.66 m/sec 2.16 ft/sec

Bit Load (single pass) Up to 32 655 kg Up to 71,993 lb

• Mast con gurations complete with pipe rack carousel and angle
drilling package (vertical, out to 30 degrees in 5-degree increments)

• Hydraulically actuated, self-indexing pipe rack carousel accepts
pipe diameters from 127 mm (5.0 in) to 194 mm (7.625 in)

• Drill strings con gured for bit changes (above the deck)

• Single Hydraulic Cylinder and cable system for pulldown/hoist

• Auto tensioning of pull down and hoist cables

• Variable grip hydraulic break out wrench for range of
pipediameters

• Sliding deck wrench assembly

• Con gured with roller deck bushing for tricone applications,
two-piece deck bushing for DTH

• Closed circuit camera in mast is used to view pipe rack carousel/
topdrive operation while racking pipes

• Drill pipe positioner

• Rotation gear box with single motor up to 160 rpm, up to
11 700 N∙m (8,629 lbf-ft) torque

3

MD6250 Rotary Blasthole Drill Specifications

Mast Packages

Mast Accessories Manual

11.2 m (36.7 ft) or 13.6 m
(44.6ft) Mast

Mast Accessories Hydraulic

11.2 m (36.7 ft) Mast One (1) hydraulically actuated

Mast Accessories Hydraulic

13.6 m (44.6 ft) Mast One (1) hydraulically actuated

Angle Drilling Included with either mast

One (1) wire rope pipe catcher,
manual bit basket

pipe catcher, hydraulically
operated bit basket

pipe catcher, plus one (1) wire
rope pipe catcher, hydraulically
operated bit basket

Carousel (mast size and pipe diameter dependent)

• Pipe rack carousel, standard:

– 11.2 m (36.7 ft) Mast: holds quantity of four (4) 10.6 m

(35ft)pipes

– 13.6 m (44.6 ft) Mast: holds quantity of four (4) 6.1 m

(20ft)pipes

Hydraulic Break Out Wrench

Variable Grip Hydraulic
BreakOut Wrench GripRanges

114-152 mm (4.5-6.0 in)
152-216 mm (6.0-8.5 in)

Drill Pipe

10.6 m (35 ft) Pipes for 11.2 m (36.7 ft) Mast – holds quantity of four (4)

127 mm 5.0 in

140 mm 5.5 in

152 mm 6.0 in

165 mm 6.5 in

178 mm 7.0 in

194 mm 7.625 in

6.1 m (20 ft) Pipes for 13.6 m (44.6 ft) Mast – holds quantity of four (4)

127 mm 5.0 in

140 mm 5.5 in

152 mm 6.0 in

165 mm 6.5 in

178 mm 7.0 in

194 mm 7.625 in

Tool Package Rotary

• One-piece roller deck bushing

• Pipe positioner rollers

• Deck wrench

• Top sub

• Bit sub

• Pipe wiper seal

Tool Package DTH

• Two-piece roller deck bushing

• Pipe positioner rollers

• Deck wrench

• Shock sub

• Top Sub

• Hammer Sub

• Pipe wiper seal

• Drill tool lubricator is included with selection of DTH
Compressor

4

MD6250 Rotary Blasthole Drill Specifications

Rotary Head Top Drive System

Torque, Single Motor 11 700 N∙m 8,629 lbf-ft

Rotation Speed 0-160 rpm

• Spindle – 140 mm (5.5 in) API regular thread with splined collar

• Rotary torque control

• Virtual rotary head travel interlocks

Operator Environment

• Cab, Standard:

– Fabric seat
– Single pane window glass
– Removable guard for driller window
– Wiper for the driller window

• Cab, Premium:

– Additional storage
– Leather seat with heat and ventilation
– Heavy duty seat suspension
– Dual pane window glass
– Removable guard for driller window, plus window facing

powertrain

– Wipers for the driller window plus front and rear windows

• Cab design features:

– Spacious FOPS cab is 3 m2 (32.3 ft2) with an integrated

operatorstation

– Cab rubber shock-mounts
– Operator station design integrates an ergonomic seat, joystick

controls with full instrumentation, and dual 254 mm (10in) color
displays, high de nition touchscreen and 12-volt powerport

– Additional display screen for cc cameras; color, high-de nition

254 mm (10 in)

– 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

– Power convertor 24V to 12V
– Radio-ready for communication and entertainment stereo
– Two swing-out doors and Cat keyed locks
– Literature holder
– Removable  oor 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

– Windshield wipers with a common washer tank

• Lighting:

– LED interior lights and map light at operators seat, backlit

joysticks and keypads

– Flood lights for the drill perimeter
– Spotlights for power group area; drill deck; mast carousel; access

ladder and walkways

– Lighting package includes 4,200 lumens  ood light on perimeter,

mast clearance lights, cab mounted strobe, front mounted
trambeacon

• HVAC:

– Floor heating vent
– Roof-mounted air conditioner/heating/pressurizing unit
– Filter access from deck
– Defogging HVAC vents on main window

Operating System Controls

• All electric controls for drilling, tramming, leveling plus
auxiliaryfunctions

• Electronic compressor control

• Rotary torque control

• Virtual rotary head travel stops and interlocks

• Pipe positioner engaged/disengaged indicator

• Drill depth meter

• Drill performance and drill health display system

• Data logging of machine health with warnings and fault code
records with export capability

• Delayed engine shut down

• Rotary head rpm gauge (digital display in screen)

• Filter indicators for hydraulic, fuel, compressor and engine

• Jack pressure sensors in display

• Dust suppression control

• Mast lock indicator

• ECM proportional fan speed control system

• Tram interlock, machine stability limits

• Tram interlock, pipe in hole

• Tram interlock, mast up and locked or down and parked

• Tram interlock, jack retracted

• Tram interlock, winch parked

• Cab environment controls (AC,  lter, heat, fan speeds)

• Prewired for Terrain and autonomous operation

• Drill Assist automated functionality:

– Auto level, auto jack retract
– Auto mast raise and lock, auto mast unlock and park

5

MD6250 Rotary Blasthole Drill Specifications

Automation and Technology

• Drill depth indicator

• Cat Terrain ready

• Product Link™ Elite (hardware from factory, subscription
package via dealer)

• Autonomy ready

Dust Control Choices

• Water injection – tank mounted below front deck 1271 L (336 gal)

– Water  ow meter, volume control, tank  ll level indicator

• Water injection plus dry dust collector 127 m3/min (4,500 ft3/min)
dust collector; includes standard water injection

– Self-cleaning  lters, dust chute with ejector

• High volume water injection (maximum) – tanks total capacity
2786 L (736 gal)

– Tank below deck (isolated for extreme cold weather) capacity

1271 L (336 gal)

– Tank above deck capacity 1514 L (400 gal)

• Static dust curtains, four sided/boxed enclosed

Service Packages

• Fast  ll for fuel and water, automated lubrication system

• Service center for lubricant drain and  ll, automated lubrication
system, fast  ll fuel and water, blow down hose (option)

Service Tools

• Lifting Bails (available by request)

– API thread 89 mm (3.5 in) – to lift corresponding drill tools

(6.75in tricone bits or 6-inch class DTH hammers)

– 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)

– API thread 140 mm (5.5 in) – to lift shock sub adapter
– BECO thread 102 mm (4.0 in) – to lift corresponding drill pipe

(5.5 in OD)

– BECO thread 114 mm (4.5 in) – to lift corresponding drill pipe

(6.0, 6.5, 6.625 and 7.0 in OD)

– BECO thread 152 mm (6.0 in) – to lift corresponding drill pipe

(7.625 in OD)

Safety and Security

• Approach angle of 15 degrees facilitates loading and unloading
ona lowboy

• Alloy drill deck covers, for servicing when mast is horizontal

• Seven (7) engine shut down buttons, by each drill egress/access
point, in cab, in engine area, on drill deck

• Over forty (40) conditional safety interlocks

• Hinged window guard over the full length of the front drill window

• Three (3) egress points on deck areas in addition to main access

• Self-closing gates secure egress ladder locations

• Electric horn activated by push button in the cab

• Automatic tram alarm, audible

• Under deck mounted battery box with keyed battery disconnect/
starter disconnect/remote jump start terminals

• Compressor air hoses with safety retention cables

• Slip resistant surfaces

• Tow hooks on non-drill-end

• Lifting lugs

6

Dimensions

All dimensions are approximate.

MD6250 Rotary Blasthole Drill Specifications

1

4

7

3

4 5

2

1

2

6

11.2 m (36.7 ft) Mast 13.6 m (44.6 ft) Mast

Width Cab End 5.625 m 18.45 ft 5.624 m 18.45 ft

1

Width Non-Cab End 4.845 m 15.9 ft 4.845 m 15.9 ft

2

Height Mast Up 17.146 m 56.3 ft 19.546 m 61.13 ft

3

Body Length 11.708 m 38.41 ft 11.708 m 38.41 ft

4

Length Mast Down 17.78 m 58.3 ft 20.18 m 66.17 ft

5

Height Mast Down 5.134 m 16.84 ft 5.134 m 16.84 ft

6

Mast Only Shipping Length 16.32 m 53.5 ft 18.72 m 61.4 ft

7

Note: Width and length dimensions include: cascading stairs and walk-around access for cab.

Weights

Working Weight Range 56 468 kg to 64 154 kg 124,490 lb to 141,436 lb

7

MD6250 Rotary Blasthole Drill Standard and Optional Equipment

Standard and Optional Equipment

Standard and optional equipment may vary. Consult your Cat dealer for details.

POWER TRAIN CHOICES

Emissions: Equivalent to Tier 2, Engine
Power C27 @ 1,800 rpm, ISO 14396
616 kW (826 hp), ISO 14396 (DIN)
838 mhp (PS)

Emissions: Equivalent to Tier 4 Final,
Engine Power C27 @ 1,800 rpm,
ISO14396 650 kW (872 hp), ISO 14396
(DIN) 884 mhp (PS)

Compressor (2,000 ft
Rotary drilling package, 56.6 m3
(2,000 ft3/min) at 8.6 bar (125 psi);
withlow pressure receiver tank for
ASME/CRN/AU or CE

Compressor (1,350 ft
DTH drilling package, 38.2 m3
(1,350ft3/min) at 34.4 bar (500 psi),
withhigh pressure receiver tank (500 psi)
for ASME/CRN/AU or CE; includes
hammer storage and 113.5 L (30 gal)
hammer lubrication system

Compressor (1,500 ft
DTH drilling package, 42.4 m3/min
(1,500 ft3/min) @ 24.1 bar (350 psi) with
high pressure receiver tank for ASME/
DRN/AU or CE; includes hammer
storage and 113.5 L (30 gal) hammer
lubrication system

CAB CHOICES

Standard – Includes a fabric seat, single
pane window glass, removable driller
window guard, and a windshield wiper
for driller window

Premium – Includes a leather seat
with heat and ventilation, heavy duty
suspension, dual pane window glass.
Removable driller window guard and
guard for window facing power train.
Additional storage box and windshield
wipers on front and rear windows

LED Lighting Package:
Provides 4,200 lumens  ood light
on perimeter, area spotlights have
1,950lumens. Mast clearance lights
andcab mounted yellow strobe light
anda front mounted tram beacon

Viewing hatch for hole spotting with
spotlight (hydraulically operated)

Foldaway trainer’s seat with
retractableseat belt

Window shades

Cabin pressure manometer gauge

Cab roof access system (includes ladders,
cage and rails)

3

/min, 125 psi)–

3

/min, 500psi)–

3

/min, 350 psi)–

Standard Optional

9

9

9

9

9

9

9

9

9

9

9

9

9

CONTROLS

Drill depth indicator and interlocks,
auto-level, auto-mast

Drill Assist (single pass auto drill)

PRODUCT LINK™/TERRAIN

Product Link (Satellite)

Product Link (Cellular)

Product Link (Dual)

Terrain for Drilling (guidance system)/
with G610 screen

FRAME/DECK

Fuel tank expansion adds 1416 L
(374gal) tank for a total capacity of
2832L (748 gal); required for autonomy
packages

Machine access via  xed stairs

Machine access via cascading, hydraulic
stairs; includes walkway around cab to
drill deck

Fire suppression ready; platform to
mount  re suppression bottles and/or
diesel gen set

Jib crane ready (mounting kit only)

Toolbox

MAST

11.2 m (36.7 ft) Mast; angle drilling –
vertical to 30° (in 5° increments)

13.6 m (44.6 ft) Mast; angle drilling –
vertical to 30° (in 5° increments)

Drill pipe thread greaser with reloadable
tank or disposable grease bucket

Tool lubrication system for rotary tricone
bits 113.5 L (30 gal)

Tool lubrication system for DTH
hammer and bit (included in HP
compressor package)

Overhead winch assembly with remote,
cable and hook

Standard Optional

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

(continued on next page)

8

MD6250 Rotary Blasthole Drill Standard and Optional Equipment

Standard and Optional Equipment (continued)

Standard and optional equipment may vary. Consult your Cat dealer for details.

Standard Optional

MAST ACCESSORIES

11.2 m (36.7 ft) or 13.6 m (44.6 ft):

Pipe catcher, manual – one wire rope
(for 11 m), two wire rope (for 13 m)
pipe catcher, bit basket, manual

11.2 m (36.7 ft) Mast:

Pipe catcher, hydraulic – one
hydraulically actuated pipe catcher,
bitbasket, hydraulic

13.6 m (44.6 ft) Mast:

Pipe catcher, hydraulic – one
hydraulically actuated pipe catcher,
plus one wire rope pipe catcher, bit
basket, hydraulic

PIPE CAROUSEL 11.2 M (36.7 FT) MAST/10.6 M (35 FT) PIPE RACK.
HOLDS QTY. OF FOUR (SELECT ONE)

127 mm (5.0 in) pipe; four pods

140 mm (5.5 in) pipe; four pods

152 mm (6.0 in) pipe; four pods

165 mm (6.5 in) pipe; four pods

178 mm (7.0 in) pipe; four pods

194 mm (7.625 in) pipe; four pods

PIPE CAROUSEL 13.6 M (44.6 FT) MAST/6.1 M (20 FT) PIPE RACK.
HOLDS QTY. OF FOUR (SELECT ONE)

127 mm (5.0 in) pipe; four pods

140 mm (5.5 in) pipe; four pods

152 mm (6.0 in) pipe; four pods

165 mm (6.5 in) pipe; four pods

178 mm (7.0 in) pipe; four pods

194 mm (7.625 in) pipe; four pods

BREAK OUT WRENCH (SELECT ONE)

Variable grip hydraulic break out
wrenchrange 114 mm to 152 mm
(4.5into 6.0in)

Variable grip hydraulic break out
wrenchrange 152 mm to 216 mm
(6.0into 8.5in)

9

9

9

9

9

9

9

9

9

9

9

9

9

Standard Optional

DRILL TOOL PACKAGES/ROTARY DRILLING
FOR 11.2 M (36.7 FT) MAST(SELECT ONE)

127 mm (5 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

152 mm (6 in); one-piece roller deck

9

9

9

9

bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

165 mm (6.5 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

178 mm (7 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

194 mm (7.625 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

DRILL TOOL PACKAGES/DTH DRILLING
FOR 11.2 M (36.7 FT) MAST(SELECT ONE)

140 mm (5.5 in); two-piece deck bushing,
pipe positioner rollers, deck wrench, cross
over hammer adapter; pipe wiper seal

165 mm (6.5 in); two-piece deck bushing,
pipe positioner rollers, deck wrench, cross
over hammer adapter; pipe wiper seal

DRILL TOOL PACKAGES/DUAL PURPOSE DRILLING
FOR 11.2 M (36.7 FT) MAST

168 mm (6.625 in); two-piece bushing,
pipe positioner rollers, deck wrench, dual
purpose carousel, two each 7.62 m (25 ft)
pipes plus sub adapters

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MD6250 Rotary Blasthole Drill Standard and Optional Equipment

Standard and Optional Equipment (continued)

Standard and optional equipment may vary. Consult your Cat dealer for details.

Standard Optional

DRILL TOOL PACKAGES/ROTARY FOR 13.6 M (44.6 FT) MAST
(SELECTONE)

127 mm (5 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

152 mm (6 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

165 mm (6.5 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

178 mm (7 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

194 mm (7.625 in); one-piece roller deck
bushing, pipe positioner roller, deck
wrench, cross over subs, pipe wiper seal

DRILL TOOL PACKAGES/DTH DRILLING FOR 13.6 M (44.6 FT) MAST
(SELECT ONE)

127 mm (5.0 in); two-piece deck bushing,
pipe positioner roller, deck wrench, cross
over hammer adapter; pipe wiper seal

140 mm (5.5 in); two-piece deck bushing,
pipe positioner roller, deck wrench, cross
over hammer adapter; pipe wiper seal

165 mm (6.5 in); two-piece deck bushing,
pipe positioner roller, deck wrench, cross
over hammer adapter; pipe wiper seal

178 mm (7 in); two-piece deck bushing,
pipe positioner roller, deck wrench, cross
over hammer adapter; pipe wiper seal

TOP SUBS (ROTARY DRILLING ONLY) (SELECT ONE)

127 mm (5 in)

152 mm (6 in)

165 mm (6.5 in)

178 mm (7 in)

194 mm (7.625 in)

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Standard Optional

SHOCK ABSORBER WITH CROSSOVER ADAPTER (REQUIRED
FORDTH, OPTIONAL FOR ROTARY DRILLING) (SELECT ONE)

127 mm (5 in)

140 mm (5.5 in)

152 mm (6 in)

165 mm (6.5 in)

178 mm (7 in)

194 mm (7.625 in)

SHOCK SUB FOR DUAL PURPOSE DRILLING/11.2 M (36.7 FT) MAST

168 mm (6.625 in) includes long top
subadapter

DRILL PIPE – 6.1 M (20 FT) PIPE FOR 13.7 M (44.9 FT) MAST;
CAROUSELHOLDS QTY. OF FOUR

127 mm (5 in) pipe

152 mm (6 in) pipe

178 mm (7 in) pipe

194 mm (7.625 in) pipe

DRILL PIPE – 10.6 M (35 FT) PIPE FOR 11.2 M (36.7 FT) MAST;
CAROUSEL HOLDS QTY. OF FOUR

127 mm (5 in) pipe

140 mm (5.5 in) pipe

152 mm (6 in) pipe

165 mm (6.5 in) pipe

178 mm (7 in) pipe

194 mm (7.625 in) pipe

DRILL PIPE – 10.6 M (35 FT) PIPE FOR 11.2 M (36.7 FT) MAST;
DUALPURPOSE CAROUSEL HOLDS QTY. OF TWO

168 mm (6.625 in)

TRICONE DRILLING BITS GROUP – QTY. 9 PER PALLET

171 mm (6.75 in) OPT 2, (M1)

171 mm (6.75 in) OPT 3, (M3)

171 mm (6.75 in) OPT 1, (S2)

200 mm (7.875 in) OPT 2, (M1)

200 mm (7.875 in) OPT 3, (M3)

200 mm (7.875 in) OPT 1, (S3)

229 mm (9 in) OPT 2, (M2)

229 mm (9 in) OPT 3, (H1)

229 mm (9 in) OPT 1, (M1)

251 mm (9.875 in) OPT 2, (M3)

251 mm (9.875 in) OPT 3, (H1)

(continued on next page)

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MD6250 Rotary Blasthole Drill Standard and Optional Equipment

Standard and Optional Equipment (continued)

Standard and optional equipment may vary. Consult your Cat dealer for details.

DTH HAMMERS AND BITS

DTH Hammer – 152.4 mm (6 in) class
with drive sub (all components, less
DTHbit assembly)

BITS, 2F-FF-S-HD
171 mm (6.75 in) two  ushing holes,  at
face with spherical carbides. Heavy duty.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60shank)

BITS, 2F-FF-S
171 mm (6.75 in) two  ushing holes,  at
face with spherical carbides.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60shank)

BITS, 2F-CC-S
171 mm (6.75 in) two  ushing holes,
concave with spherical carbides.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60shank)

BITS, 2F-CV-S+B
171 mm (6.75 in) bits, two  ushing holes,
convex with spherical gauge and ballistic
face carbides.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60 shank)

BITS, 3F-CV-S+B
171 mm (6.75in) three  ushing holes,
convex with spherical gauge and ballistic
face carbides.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60 shank)

BITS, 3F-FF-S+B
171 mm (6.75in) three  ushing holes,  at
face with spherical gauge and ballistic
face carbides.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60 shank)

BITS, 3F-CC-S+B
171 mm (6.75in) three  ushing holes,
concave with spherical gauge and ballistic
face carbides.
Kit includes: nine each bits, four each
drive subs, three each additional foot
valves, (bits con gured with QL60 shank)

Standard Optional

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Standard Optional

SERVICE PACKAGES/FLUIDS SYSTEM FOR 11.2 M (36.7 FT)
OR 13.6 M (44.6 FT) MAST IN ANGLE DRILLING

Fast  ll for fuel and water and automated
lubrication system

Central drain/ ll service center for
lubricants, fast  ll for fuel and water,
a blow-down hose and automated
lubrication system

SERVICE TOOLS

Lifting bails:

API thread 89 mm (3.5 in)

API thread 114 mm (4.5 in)

API thread 140 mm (5.5 in)

BECO thread 102 mm (4.0 in)

BECO thread 114 mm (4.5 in)

BECO thread 152 mm (6.0 in)

CLIMATE/REGIONAL CONSIDERATIONS

Batteries, sealed quantity four (4)

Batteries, sealed quantity six (6) (required
for cold weather Level 2 and 4 and/or
semi autonomy packages

Level 1 – Standard  uids and lubricants.
With a temperature range of –1°C
(30°F) to 52° C (125°F)

Level 2 – Arctic – Temperature down to
–18° C (0°F) Arctic  uids and lubricants

Level 4 – Temperature down to –40° C
(–40°F) 50 hz heating components, high
pressure compressor. Arctic  uids. Diesel
 red heater for engine coolant, primary
water tank and batteries. Heated blankets
for receiver tank and water suction line.
Junction box with provisions for adding
customer supplied shore power connector
240V/50A. If needing 60 hz capability,
must order 60hz battery charger through
aftermarket

Decals, ANSI

Decals, ISO

Certi cations, EAEU

Certi cations, CE

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MD6250 Rotary Blasthole Drill Standard and Optional Equipment

Standard and Optional Equipment (continued)

Standard and optional equipment may vary. Consult your Cat dealer for details.

DUST SUPPRESSION

Water injection 1271 L (336 gal)

Water injection 1271 L (336 gal) plus dry
dust collector 127 m

Water injection, high volume 2786 L
(736gal)

– Tank below deck (isolated for extreme

cold weather) capacity 1271L (336 gal)

– Tank above deck capacity 1514 L

(400gal)

Static dust curtains, four sided/boxed
enclosed

Dust curtain hydraulic lifters raise front
and rear dust curtains (recommended
with dust collector)

Tram off spray to wet the ground around
the cuttings pile

3

/min (4,500 ft3/min)

Standard Optional

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UNDERCARRIAGE; CAT 336E EL (SELECT ONE)

Triple grousers 600 mm (23.6 in); for hard
rock 0.88 bar (12.7 psi) ground pressure

Triple grousers 750 mm (29.5 in); for soft
rock 1.10 bar (15.9 psi) ground pressure

Standard Optional

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For more complete information on Cat products, dealer services, andindustry solutions, visit us on the web
atwww.cat.com

© 2021 Caterpillar
All rights reserved

Materials and speci cations are subject to change without notice. Featured machines in photos may include
additional equipment. See your Cat dealer for available options.

CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, “Caterpillar Corporate Yellow,” the
“PowerEdge” and Cat “Modern Hex” trade dress as well as corporate and product identity used herein,
aretrademarks ofCaterpillar and may not be used without permission.

AEXQ3140 (03-2021)

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GN1, Indonesia, LACD,
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SoutheastAsia, Turkey)