Hoist speed range to 180 feet (54 m.) per minute using two-part line.
Wrap-around cam-actuated 18” x 4” (457mm x 102mm) brake.
Tool Handling Hoist
15,000 lbs. (6750 kg.) bare drum line pull.
Single-line 9/16” (14.3mm) non-rotating wire line with safety hook.
Wrap-around 18” x 4” (457mm x 102mm) cam-actuated brake. Now 2 part can be 3 or 4 part.
Power Unit
Engine and power divider connected as a unit.
6v-71n gm detroit diesel engine. 238 bhp at 2100 rpm
Totally enclosed oil bath lubricated power divider transfer case. Power transferred through high speed chains running on heat treated sprockets.
Low noise level exhaust silencers, two-stage dry-type air cleaner with service indicators. Large capacity for both engine and air compressor.
Mast Assembly
Electric welded high tensile strength seamless tubular steel construction.
Two chrome-plated, double-acting, telescoping hydraulic cylinders with safety checks raise and lower mast.
Drill stem rack is hydraulically positioned then locked for make up and racking of 2nd and 3rd stems. Na
Rack holds stem securely when mast is in lowered transport position.
Choice of three 30 ft. x 5-1/2. o.d. (9m x 140mm) or 30 ft. 4-1/2. o.d. (9m x 115mm) drill stems with double lead threads included. Na
Pulldown
Hydraulically powered pulldown with separate controls for rate of feed and down pressure driven through 2-speed transmission.
Down pressure is infinitely adjustable to a maximum weight of 35,000 lbs. (15750 kg.) with ballast added.
2” (51mm) pitch roller chains, attached to top drive housing brackets, automatically feed full drill stem lengths.
Feed rate adjustable. 0 to 6-1/2 feet (2.1 m.) per minute standard. Optional higher feed rates available.
Air Supply
Atlas copco dt4 two cylinder. Double-acting, air cooled, two-stage with a capacity of 715 cfm free air delivery at 55 psi; 675 cfm at 100 psi, 660 cfm at 125 psi (20.3 cu. m./min. at 3.9 kg./sq. cm., 19.1 cu. m./min. at 7 kg./sq. cm., 18.7 cu. m./min at 10.2 kg./sq. cm.) (based on 1180 rpm.)
Driven through torque tube drive line from power transfer case. Air pressure unloading valve used to eliminate the need for a compressor crutch.
Air cooled intercooler.
Air receiver tank.
Intake air filtered by oversized engine air cleaner.
Water Injection System
Duplex piston pump injects fluid into air line. Cat triplex
Visual flow indicator.
Hydraulically powered with infinitely variable speed control provides 0 to 8 gpm at 250 psi. (30 1. per min. at 17.6 kg./sq. cm) wash wand
250 gallon (950 l.) water reservoir. Na
Dust And Cuttings Control
Hydraulically driven type d. No. 8 roto-clone dynamic
Precipitator draws dust and cuttings away from driller's area.
