POWER REQUIREMENTS

ELECTRIC: 380, 415, 440 or 550 volts AC @ 50 cps or 440, 480, 550 volts AC @ 60 cps. *00 to 1,100 amperes maximum strating load.

AIR: approx. 1,200 cfm at 60 to 100 psi.

WATER: 10gpm @ 60 to 100 psig for dust suppression and cooling.

OPERATING CHARACTERISTICS

DERRICK FORCES:
PILOT HOLE DRILLING:
ultimate: 210,000  LBS.
recommended maximum: 100,000 LBS.

RAISE REAMING:
ultimate: 455,000  LBS.
recommended maximum: 315,000 LBS.

BIT ROTATION SPEEDS:
8, 16, 30 and 60rpm with 50 cps power and 10, 20, 36 and 72 rpm with 60 cps power.

PENTRATION RATE:
12 inches per minute, maximum.

PILOT HOLE DIAMETER:
11 inches.

REAMER DIAMETER:
4, 5 and 6 feet (larger or intermediate diameters available for custom applications)

MAXIMUM DRILLING DISTANCE:
600 feet @ 6 foot diameter.

DIP ANGLE RANGE:
45º to 90º from horizontal.

full details and operating/maintenance specifications are available from supplied manual.