MD6420 ROTARY DRILL

rotary drive system

Horsepower capacity216.0 kW

Torque0-15 185 N∙m (0-11, 200 lbf-ft)

engine standard – c27 tier 2

Rated horsepower597.0 kW

Full load2100 rpm

Fuel tank1514 L

ManufacturerCaterpillar

Optional fuel tank1703 L

compressor optional oilflooded singlestage screw

Discharge air flow (sea level)42.5 m3/min

Discharge air flow (sea level)67.9 m3/min

Maximum operating pressure10.3/24.1/34.4 bar (150/350/500 psi)

Maximum operating pressure6.9 bar

accessories tools and handling equipment

Bit Sub – Bottom threadDepends on bit diameter

Bit Sub – DiameterDepends on pipe diameter

Bit Sub – LengthUp to 2286 m (Up to 90 in)

Bit Sub – Table bushingRoller-type or two-piece with replaceable liner

Bit Sub – Top threadDepends on pipe diameter

Bit Sub – Wall thickness25 mm

Drill Pipe (optional) – 16 m: Diameter178 mm, 194 mm, 219 mm (7.0 in, 7.625 in, 8.625 in)

Drill Pipe (optional) – 16 m: Length – (standard for 16 m/50 ft configuration) – two pipes coupled together plus bit sub7.62 m

Drill Pipe (optional) – 16 m: ThreadsDepends on pipe outside diameter

Drill Pipe (optional) – 16 m: Wall thickness25.4 mm

Drill Pipe (optional) – 13 m: Diameter178 mm, 194 mm, 219 mm (7.0 in, 7.625 in, 8.625 in)

Drill Pipe (optional) – 13 m: Wall thickness25 mm

Drill Pipe (optional) – 13 m: Length12.19 m

Drill Pipe (optional) – 13 m: ThreadsVaries with outside pipe diameter

Pipe Rack (Inside the Mast)Carousel with stationary pods and breaker plates

Pipe Rack (Inside the Mast): 13 m/40 ft configuration (optional deep hole package) – 5 pipes: 12.19 m (40 ft) pipe – outside diameter178 mm, 194 mm, 219 mm (7.0 in, 7.625 in, 8.625 in)

Pipe Rack (Inside the Mast): 13 m/40 ft configuration (standard) – 4 pipes: 12.19 m (40 ft) pipe178 mm, 194 mm, 219 mm (7.0 in, 7.625 in, 8.625 in)

Pipe Rack (Inside the Mast): 16 m/50 ft configuration (standard) – 4 pipes: 7.62 m (25 ft) pipe178 mm, 194 mm, 219 mm (7.0 in, 7.625 in, 8.625 in)

Pipe Rack (Inside the Mast): Pipe rack indexHydraulic cylinder with locking pin

Pipe Rack (Inside the Mast): Pipe rack swingHydraulic cylinders (2)

Top Adaptor Sub – Bottom threadDepends on pipe diameter

Top Adaptor Sub – DiameterDepends on pipe diameter

Top Adaptor Sub – Length914 mm

Top Adaptor Sub – Top thread (API reg.)140 mm

Top Adaptor Sub – Wall thickness25 mm

Winch System – Cable size13 mm

Winch System – Rating1587 kg

engine optional – c27 tier 2

Fuel tank1514 L

Full load2100 rpm

ManufacturerCaterpillar

Optional fuel tank1703 L

Rated horsepower652 kW

operating temperature

AltitudeUp to 4572 m (Up to 15,000 ft)

Maximum ambient rating (standard)52.0 ° C

Minimum ambient rating (standard)-28.0 ° C

mainframe decks and walkways

Jacks, mast pivot and deckWelded integrally to mainframe

Machine deckAccess both sides

Tool boxLockable door, below front deck

Tow hooksWelded, two (2) front

operator’s cab

Climate controlWall-mounted, AC/heating/ pressurizing unit

Floor area3 m2

Height inside1943 mm

Helper’s seatFixed folding jump seat

Number of doorsTwo with windows (included in above)

Number of windows10

Operator’s seatOne swivel-type with armrests, headrest and retractable seat belt

OtherWindow wipers and washers

TypeShock-mounted; two-man, integrated FOPS certified

Windows (tinted safety glass in rubber mounting)6 mm

drill table and work deck

Table height off ground1448 mm

Viewing hatchIn the rear deck; hydraulically operated from the cab

Wide walkwaysAround the drill deck

compressor standard oilflooded singlestage screw

Discharge air flow (sea level)56.6 m3/min

Maximum operating pressure6.9 bar

leveling jacks

LocationTwo front, two rear

Number4

Pad diameter – Drill end914 mm

Pad diameter – Non-drill end762 mm

13 or 16meter mast configuration

Depth multi-pass (13 m/40 ft configuration)Up to 75.3 m (Up to 247 ft)

Depth multi-pass (16 m/50 ft configuration)Up to 46.9 m (Up to 154 ft)

Depth single pass (13 m/40 ft configuration)13.4 m

Depth single pass (16 m/50 ft configuration)16.46 m

Hole diameterUp to 311 mm (Up to 12.25 in)

pulldownhoisting capacity

Cable type – 29 mm (1.125 in)DYFORM 8

Drilling feed rate0-19 m/min (0-61 ft/min)

Head travel (13 m/40 ft configuration)15.24 m

Head travel (16 m/50 ft configuration)18.29 m

Hoist capacityUp to 19 843 kg (Up to 43,745 lbf)

Pull-down capacityUp to 383 kN (Up to 86,000 lbf)

Retract rate0-33.5 m/min (0-110 ft/min)

engine optional – qst30

Fuel tank1514 L

Full load2100 rpm

ManufacturerCummins

Optional fuel tank1703 L

Rated horsepower – Non-cert634 and 783 kW (850 and 1,050 hp)

Rated horsepower – Tier 2783 kW

undercarriage

Brake releaseAutomatic

BrakesSpring set, hydraulic release

FrontThree-point oscillating type

Gradeability mast down17%

Maximum drive horsepower per track216 kW

Number of rollers on each side13

Rock guards/chain guardsStandard full-length guards

Track adjustment meansHydraulic with grease gun

Track drive disconnectStandard (manual)

Tram speed maximum2.27 km/h

dust curtain

Dust curtainOptional hydraulic lifters, front and rear

engine standard – c27 tier 2

ModelC27 Tier 2

engine optional – qst30

ModelQST-30

engine optional – c27 tier 2

ModelC27 Tier 2