Mobiledrill B51: Compact, Powerful Drill Rig for Geotechnical Needs

The B-51 is the next iteration of classic Mobile Drill power and versatility – it has an available 9,876 ft-lbs torque, can be track or truck mounted, making it ideal for the 100-125 ft hollow-stem auger market. A small footprint mechanical drive unit, perfect for the geotechnical market. The heart of the B-51 is the power shift transmission – this gives the operator options to shift gears and even direction without stopping rotation. This feature gives the operator a new level of control of the drill string when augering in stiff/sticky clays, making for faster and safer production in the toughest conditions.

FEED SYSTEM

• Pulldown force: 15,708 lbs [7,125 kg]
• Retract force: 24,544 lbs [11,133 kg]
• Feed speed, down: 53 ft/min [16.2 m/min]
• Feed speed, retract: 34 ft/min [10.4 m/min]
• Feed stroke: 6 ft [1.8 m]

POWER UNIT

• Deck Engines: John Deere, Tier 4, 74 hp or Deutz Diesel

Drill Head Rotary

• Total enclosed “dry box” with tapered roller bearings.
  1-3/4” Steel Kelly Drive Bar
• Open Spindle Bore: 2 in [51 mm]
• Maximum Torque and rpm (Engine Specific):
  • John Deere: 9,876 ft-lbs [13,390 Nm] @ 20 rpm, Maximum 618 rpm
  • Deutz: 7,110 ft-lbs [9,640 Nm] @ 20 rpm, Maximum 669 rpm

Hoists

• Main-Single Line Capacity: 6,000 lbs [2,722 kg]
• Main-Single Line Capacity: 4,500 lbs [2,041 kg]
• Safe-T-Driver/Wireline: 900 lbs [408 kg]
• Wireline Hoists – A Wide Variety Available
  Line Capacities from 700 ft [213 m] to 7,500 ft [2,286 m]

Estimated Operating Capacities

• Hollow Stem Augers, 4-1/4 in [108 mm] ID: 130 ft [40 m]
• Continuous Flight Auger, 6 in [152 mm] OD: 225 ft [67 m]
• Rotary Drilling, NWJ/NW: 1,000 ft [305 m]
• Diamond Core Drilling, N Wireline: 900 ft [275 m]

Note: Above drilling capacities may vary according to sub-surface conditions, hoist capacity and rotary head option.

Optional Equipment

• Mast: 20 ft [6.1 m] or 25 ft [7.6 m]
• In-Out/Side-to-Side Slide Base
• SPT Automatic Hammer, ASTM D-1586, 140 lb [64 kg],
  170 lb [77 kg], 300 lb [136 kg], 340 lb [154 kg] Slugs Available
• Custom Breakout Table Designs
• Make/Break Double Rod Clamp System
• Hydraulic Breakout Wrench
• Water Pumps – Piston, Centrifugal and Progressive Cavity
• Water/Foam Injection Systems
• Swing-Out Under Body Auger Racks
• Water Tanks
• Driller/Helper Platforms
• Safety Cage Options
• Night Lights

NOTE: Engineering specifications are theoretical, actual performance will be different, specifications are subject to change without notice.