AD-II

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.
What separates the AD-II? 
Time-tested for 50 years.
High-torque for augering and high RPM for coring.​
Various options and configurations.
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STANDARD FEATURES:

Power Unit –

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


Drill Head - 

2-15/16" [74.6 mm] 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.

OPTIONAL EQUIPMENT:

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" [12.7 mm] cable.

Wireline Hoist -

Hydraulically powered, used for wireline core drilling. 1,500 ft. [457 m] of  1/8" [3.3 mm] 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" [8.1 mm] 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" [101 mm] 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.