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TELESCOPING MAST 300 Series
OVERALL
A telescoping mast with open face mast design, manufactured to meet API-4F specifications. The open face design utilizes
structural steel construction, which allows for maximum block clearance. Mast includes a ladder from ground to crown
and a block cradle.
SPECIFICATIONS
Mast Height . . . . . . . . . . . . . . . . . . . . . . . . 96' (29.6 m)
Number of Lines to Block . . . . . . . . . . . . . . . 4 or 6
Capacity: 4-Lines . . . . . . . . . . . . . . . . . . . . 165,000
6-Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . 180,000
Drilling Line Size . . . . . . . . . . . . . . . . . . . . . 1" (25.4 mm)
Racking Board Height . . . . . . . . . . . . . . . . . . 55' 6.5" (16.93 m)
Racking Board Capacity . . . . . . . . . . . . . . . . 2 7/8" EUE . . . . . . 11,520' (3511.3 m)
Rod Basket Height . . . . . . . . . . . . . . . . . . . . 78' 3" (23.8 m)
BASE SECTION
300 Series uses a Y-Base which is welded to carrier frame and the mast is set back at 3.5 degrees.
MAST
300 Series includes the 96'; 180,000 lb. rated on 6 lines; 5" x 5" square tube mast.
(Engineered and analyzed to meet the API spec 4F.)
CROWN BLOCK
McKissick roll forged API Certified crown sheaves are set up for a 4 and 6 line string-up. Crown sheaves are grooved for 1".
All sheaves are mounted on tapered roller bearings lubed from a grease zerk bank for ease of maintenance.
300 Series Crown includes:
One 24" (610 mm) fast line sheave, one 24" (610 mm) dead line sheave, two 24" (610 mm) crossover sheaves, and one (1) 24" (610 mm) sandline sheave for 9/16" cable.
RACKING BOARD AND ROD BASKET
The mast includes an all welded racking board. The racking board automatically deploys as the mast is extended.
The mast includes an automatically deploying rod basket with rod hangers, air transfer system (on a roller trolley slide
for easier access for placement in fingers), and safety chain with binder on end of fingers.
MAST RAISING SYSTEM
The mast utilizes one 3-stage double acting raising rams and one double-stage telescoping cylinder built
with a slide. Load pins are hydraulically operated. Raising, telescoping, and load pin controls are located under
the operator's console for easy access and operation. Hydraulic pressure gauges are mounted on the mast base
to provide system monitoring during the raising/lowering process. The hydraulic system incorporates a safety
choke system to control flow to telescoping or raising cylinders in case of a hydraulic line rupture or damage.
LOAD GUYS
Mast includes two 3/4" bumper guys from the crown to carrier; two 5/8" board guys from board to outriggers and
2 3/8" floor lines from board to floor. (Optional - four 5/8" wind guys.)
DEADLINE ANCHOR
Deadline anchor is designed and engineered to meet API specifications and rated for a 150,000 lb. maximum
deadline load.
FOLDING WORK PLATFORM
Platform is constructed of rectangular tubing and is decked with a reduced slip grating. Platform is adjustable in
height in reference from ground level. Platform includes a sliding access door and safety railings. Optional telescoping
staircase with safety rails available.
OUTRIGGERS
Manual, Swing out, MWI 300 Series is equipped with 2 rear outriggers for maximum stabilization.
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