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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.
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