Acker Drill Company Inc

Acker Drill Company Inc

Model AD-II - Drill Unit

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When you look in the dictionary under the word 'value', you may very well see a picture of the AD-II.  Originally rolled out of our plant in 1969, the AD-II is still a very popular choice of contractors worldwide as a rugged, mechanical rotary drill.

Power Unit –

  • (5) cylinder, 97 HP @ 2,300 RPM with 12-volt electric start.


Drill Head -

  • 2-15/16' [7.46 cm] spindle bore, accepts all rod and casing sizes up to 'N' wireline. Eight speeds in forward and two in reverse. Mechanical drive bevel gears.  Torque up to 7,000 ft. lbs. [9,490 Nm].

Lo-Range (Spindle Speeds @ 1,800 Engine RPM) -

  • 1st Gear (0-63 RPM)
  • 2nd Gear (0-130 RPM)
  • 3rd Gear (0-238 RPM)
  • 4th Gear (0-403 RPM)

Hi-Range (Spindle Speeds @ 1,800 Engine RPM)  -

  • 1st Gear (0-98 RPM)
  • 2nd Gear ( 0-201 RPM)
  • 3rd Gear (0-368 RPM)
  • 4th Gear (0-623 RPM)

Lo-Range (Spindle Speeds @ 2,800 Engine RPM) -

  • 1st Gear (0-98 RPM)
  • 2nd Gear (0-203 RPM)
  • 3rd Gear (0-371 RPM)
  • 4th Gear (0-627 RPM)

Hi-Range (Spindle Speeds @ 2,800 Engine RPM) -

  • 1st Gear (0-151 RPM)
  • 2nd Gear (0-314 RPM)
  • 3rd Gear (0-574 RPM)
  • 4th Gear (0-969 RPM)

Transmission –
4-speed transmission with two speed auxiliary transfer box, providing eight speeds forward and two speeds in reverse.

Mast -
Hydraulic folding Mast for 20 ft. [6.09 m] rod pulls complete with sheaves for manila rope and hoisting cable.  Mast disconnect permits mast-down and allows for low head room drilling operations.

Drill Frame -
Welded structural steel, supports the mast, control panel, winches and Cathead.

Dual Action Slide Base –
Provides both side-to side 'wiggle-tail' (Optional) and in-and-out movement (Standard) of the drill unit assembly for precise positioning over the hole.

Auger Guide -
Prevents 'kick out' when starting new holes. Available in multiple sizes to match preferred auger size.  Customer to specify.

Control Panel -
All controls and gauges are grouped together in a convenient panel located at the left rear of the machine and facing the rear.

Hydraulic Leveling Jacks –
Two (2) front and (2) rear mounted jacks with 36' [91 cm] stroke and lock check valves.

Main Drum Hoist -
10,000 lb. [4,535 kg] planetary type with rapid reverse and automatic brake.  Equipped with ft. [27.4 m] of 1/2' [1.27 cm] cable.

Wireline Hoist -
Hydraulically powered, used for wireline core drilling. 1,500 ft. [457 m] of  1/8' [.33 cm] wireline cable.  Lifting capacity is 800 pounds [362 kg].

Auxiliary Winch -
2,500 lb. [1,334 kg] capacity.  Equipped with 75 ft. [22.86 m] of 5/16'[.81 cm] cable.

Cathead Cargo Type Hoist -
Hydraulically powered cargo type hoist.

Water Pump –
Progressive cavity Moyno 3L6 mud pump. Hydraulically driven. Capacity is 27 GPM at 225 psi.

Water Pump –
Progressive cavity Moyno 3L8 mud pump.  Hydraulically driven.  Capacity is 50 GPM at 225 psi.

Water Pump –
Triplex piston pump for high-pressure operations.  Flow capacity 22.6 GPM @ 425 psi.

Water Pump –
Triplex piston pump for high-pressure operations.  Flow capacity 30 GPM @ 425 psi.

140 lb. [63.5 kg] Automatic SPT Hammer -
Hydraulically driven mechanism conforms to ASTM SPT.

Ackermatic Hydraulic Chuck Assembly -
4' [10.1 cm] handles all casings AW through NW, all rods a through H (jaws must be changed for each rod or casing size).

Hydraulic Rod Clamp
Break-Out Wrench

Drill Platform -
Welded steel construction with safety decking, two under deck lateral storage compartments providing drill rod and core barrel storage.

Auger Storage -
Under slung horizontal type provides storage.

Tool Box -
Large under slung double size compartment with two lockable doors for miscellaneous storage.

Drill Operator’s Stand –
Attaches to drill platform.  Has non-skid step for operator's safety.  Folds up for traveling.

Water Tank -
All steel welded construction with drain valve, baffles and filler cap.  250 gallon [946 L] capacity.  Mounts on drill platform.

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