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 360-degree visibility including the ground. Wind-shield 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 ac-cessible and the vents act as defrosters when needed.

Rugged FOPS cab protects operator from environmental hazards, dust and noise

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.

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 excel-lent slewing power and counter rotation abil-ity. Pads and links can be replaced individually rather than as a unit, allowing the drill to oper-ate if one pad is damaged or missing.

The 351 propels at 1.0 mph (1.77 km) to quickly move from hole to hole.

Diesel or electric prime movers provide power and versatility

The 351 can be configured 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 advan-tages of increased utilization, ability to move more quickly from bench to bench or hole to hole, and no cables or trans-formers to accommodate.

For locations where electricity is more advantageous, a WEG 6811 electric mo-tor produces up to 1400 HP (1,044 kw) at 50/60 HZ. The electric model operates on AC power, 4160 to 7200 volts, and in-cludes a pressurized machinery house.

Massive mainframe and undercarriageprovide superior stability and

maneuverability

The electrical control system on the 351 puts diagnostics and drill operation at the driller’s fingertips. 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 Pentium-based Central Computer, located in the cab, features a color display with infrared touch screen interface that can be oper-ated with a gloved hand. Virtual switches operate secondary functions.

Aggressive, new technology keeps man and machine in sync

Diesel Power Pack Selections CompressorCummins Caterpillar HP @ RPM CFM @ psi M / min. @ barQSK45 1500 @ 1800 3800 @ 110 107.6 @ 15.95 CAT 3512 1650 @ 1800 3800 @ 110 107.6 @ 15.95 3200 @ 110 90.6 @ 15.95

Electric Power Pack Selections CompressorWEG HP @ RPM CFM @ psi M / min. @ bar6811 1400 @ 1475 3800 @ 110 107.6 @ 15.95 3000 @ 110 84.95 @ 15.95

Rotary Head Hole Diameter19,000 ft-lb. maximum torque @ 87 RPM / 25, 764 N-m 10-5/8 - 16 in.162 RPM maximum speed @ 10,300 ft-lb. / 13,965 N-m 269 - 406 mm

Feed Single Pass Depth Pulldown: 0 -125,000 lbf / 0 - 555 kN 65 ft. / 19.8 m Pullback: 70,000 lbf / 311 kN Multi-Pass Depth: Feed: 62 fpm / 20.7 mpm 135 ft. / 41.2 m Retract: 140 fpm / 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 / 400,000 lb. / 181,437 kg Options: • Aquila Mining Systems • Auto Drill • Water Injection • Automatic Leveling • Dust Collector • Wiggins Central Service • Automatic Lube System • Fire Suppression • Cold Weather Package • Tow Bar • Cable Reel • GPS Navigation •AngleDrill0-30Degrees • Remote Propel • LCD Video Camera System

Specifications