Description
Seize this opportunity to acquire the sough after Atlas Copco Pit Viper 271. Expertly maintained and freshly rebuilt in 2021, this top-quality blasthole drill ensures unparalleled performance. Optional service and spare parts package available for dependable ongoing maintenance.
Specifications:
Rated Capacity
Single pass depth – 16.8 meters
The carousel can hold 2 x 7.6m pipes
Maximum hole depth 32m
Drill Rods
Length 7.6m
OD range 5 1/2’’ – 8 5/8’’
Suggested Hole size – 171mm-270mm
Rotary head
Speed range Variable 0 – 150 RPM
Torque Variable 0 – 8,700 lbf-ft (0 – 11,796 Nm)
Number of motors Two
Type of motor Variable displacement axial piston
Reduction Two-stage spur gear (15.227:1)
Horsepower 181 HP (135 kW) at 100% efficiency
Travel length Standard: 64.48 ft (19.65 m)
Feed system
Pulldown capacity Up to 70,000 lbf (0 – 311 kN)
Pullback capacity 0 – 35,000 lbf (0 – 156 kN)
Weight on bit Variable, 0 – 75,000 lb (0 – 34,019 kg)
Mechanism type Two dual rod, dual-piston hydraulic cylinders (patented design)
Number of cables – diameter Two pulldowns, two pullback – 1 in (25.4 m)
Number of sheaves – outside diameter Eight – 23.5 in (597 mm)
Automatic tensioning
Hydraulic motor-driven jackscrews for pulldown cables; hydraulic cylinders for
pullback cables (patented design)
Feed speed 126.7 ft/min (38.4 m/min)
Retract speed 158.1 ft/min (48.2 m/min)
Hydraulic system
Three hydraulic pumps mounted on a single three-hole pump drive gearbox driven off the engine
through a drive shaft
Two main pumps – drilling functions (drill feed and rotation) or tram functions (propel)
One auxiliary circuit triple pump – fans and other auxiliary functions
Airend
1,450 cfm @ 350 psi (41.1 m3/min @ 24 bar)
Diesel engine
CUMMINS QSK19 – 760HP@2100RPM
