All-purpose drill rig for soil and rock explorations using augers, rotary tools, or core drilling tools.
Rated from 125 ft. (38m) to 250 ft. (76 m) depth with hollow stem or continuous flight augers up to 14” (356 mm) hole size.
Rated to 1000 linear feet (305 m) of core drilling using N series tools.
The drill frame is a weldment, constructed of heavy wall rectangular steel tubing, with sufficient strength and rigidity for heavy duty use.
The D-50 unit is powered by a 115 HP, 4-cylinder turbo charged Tier 4 diesel engine. Electric starting and engine instruments are standard.
Clutch – 13 inch (330 mm) automotive type.
Transmission – Heavy duty helical gear transmission with 4 – forward and 1 – reverse gears.
Optional Cathead is driven by a power-take-off.
The right angle drive is a heavy-duty gearbox, totally enclosed, and running in oil.
The rotary box consists of a #80 triple-strand roller chain drive, totally enclosed, and running in oil. The quill and spindle are supported on tapered roller bearings. The lower bearings run submerged in oil. The upper bearings are externally greased. High speed options are available for coring.
- Spindle Bore: 3-1/2″ (89mm)
- Spindle Travel: 70″(1778mm)
- Thrust @ 2300 PSI:
- UP: 22,581 lbs. (100kN)
- DOWN: 14,453 lbs. (64kN)
- Max Feed Rate:
- UP FPM 49 (15m/min)
- DOWN FPM 76 (23m/min)
- Up Regenerative 70 FPM (21 m/min)
- Max Gross Spindle Torque :
- 1st Gear: Up to 9,000 lbs (12,200 Nm)
- Max Spindle Speed:
- 1st gear: 95 RPM
- 4th gear: 600 RPM
** Detented feed with rapid retract is available
On the D-50 unit, oil is supplied by a heavy-duty gear type two-section pump rated at 19 GPM (72 L/min) and 24 GPM (91 L/min) at 2400 RPM. Maximum operating pressure is 2300 PSI (15,513 k Pa). The pump is gear driven from the engine accessory drive.
Hydraulic valves are stock sectional body directional control valves with relief. An optional regenerative spool can be provided for the main feed valve providing a high-speed spindle lift as well as normal operation. All controls are conveniently located on a single console for ease of operation.
A heavy duty universal joint which mounts to the spindle with a single nut is provided for ease in hook-up and adjusting for misalignment. All components are sized to withstand torque and axial loads encountered under most drilling conditions. 1-5/8” (41.3 mm) female hex is standard, other sizes are available.