Rugged FOPS cab protects operator from environmental hazards, dust and noise Atlas Copco Drilling Solutions sets the safety, operator comfort, and ergonomic standards for the industry with its new 351 cab design. Large, tinted, safety-glass windows located on all four sides of the cab give the operator 360degree visibility including the ground. Windshield wipers and sun screens are standard for both drill end and deck end.
The single-piece FOPS cab, isolation mounted for optimum comfort and stability, is thermally insulated, heated, pressurized, and sound rated to 70 dBA. An integrated air system with directional vents and louvers keeps the cab comfortable. The optional air conditioning unit is mounted underneath the cab rather than on top to avoid problems with leakage. Controls are easily accessible and the vents act as defrosters when needed.
Diesel or electric prime movers provide power and versatility
Massive mainframe and undercarriage provide superior stability and maneuverability
The 351 can be confgured with either a diesel or electric prime mover. Diesel engine selections are Cummins QSK45 or Caterpillar 3512 . The Cummins (1500 HP/1,119 kw) and the Caterpillar (1650 HP/1,230 kw) both run at 1,800 RPM. A diesel-powered 351 drill offers the advantages of increased utilization, ability to move more quickly from bench to bench or hole to hole, and no cables or transformers to accommodate.
The 351 utilizes a weld-fabricated mainframe constructed of 30-in. (762 mm) I-beam, which weighs approximately 326 lb/ft. (47.8 kg/m). This massive mainframe is the foundation for the other drill elements.
For locations where electricity is more advantageous, a WEG 6811 electric motor produces up to 1400 HP (1,044 kw) at 50/60 HZ. The electric model operates on AC power, 4160 to 7200 volts, and includes a pressurized machinery house.
A Caterpillar 385 custom undercarriage, the longest in the industry, provides a low center of gravity and additional stability when the tower is raised. The 385 undercarriage exhibits excellent slewing power and counter rotation ability. Pads and links can be replaced individually rather than as a unit, allowing the drill to operate if one pad is damaged or missing. The 351 propels at 1.0 mph (1.77 km) to quickly move from hole to hole.
Aggressive, new technology keeps man and machine in sync The electrical control system on the 351 puts diagnostics and drill operation at the driller’s ngertips. Six Distributed Control Unit (DCU) computers, located in strategic points on the drill, network all operating data to the operator’s Central Computer in the cab.
The engine is tied directly into this network. The Pentiumbased Central Computer, located in the cab, features a color display with infrared touch screen interface that can be operated with a gloved hand. Virtual switches operate secondary functions.
Specifications Diesel Power Pack Selections Cummins QSK45
Caterpillar CAT 3512
HP @ RPM 1500 @ 1800 1650 @ 1800
CFM @ psi 3800 @ 110 3800 @ 110 3200 @ 110
Compressor M / min. @ bar 107.6 @ 15.95 107.6 @ 15.95 90.6 @ 15.95
HP @ RPM 1400 @ 1475
CFM @ psi 3800 @ 110 3000 @ 110
Compressor M / min. @ bar 107.6 @ 15.95 84.95 @ 15.95
Electric Power Pack Selections
WEG 6811
Rotary Head 19,000 ft-lb. maximum torque @ 87 RPM / 25, 764 N-m 162 RPM maximum speed @ 10,300 ft-lb. / 13,965 N-m
Hole Diameter 10-5/8 - 16 in. 269 - 406 mm
Feed Pulldown: Pullback: Feed: Retract:
0 -125,000 lbf / 70,000 lbf / 62 fpm / 140 fpm /
0 - 555 kN 311 kN 20.7 mpm 42.7 mpm
Weights & Dimensions: / Diesel / Electric Length Tower Up: 53 ft. 10 in. / 16.38 m Width Tower Up: 26 ft. 8-1/2 in. / 8.15 m Operating Weight: 375,000 lb. / 170,100 kg Options: Aquila Mining Systems Automatic Leveling Automatic Lube System Tow Bar Angle Drill 0 - 30 Degrees
Single Pass Depth 65 ft. / 19.8 m Multi-Pass Depth: 135 ft. / 41.2 m
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Auto Drill Dust Collector Fire Suppression Cable Reel Remote Propel
400,000 lb. / 181,437 kg
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