Heavy-duty drill rig for soil and rock exploration using augers, rotary tools or core drilling tools.
Rated from 150 ft. (46m) to 300 ft. (92 m) depth with hollow stem or continuous flight augers up to 19” (483 mm) hole size.
Rated to 1500 linear feet (458 m) of core drilling using N series tools.
The D-90 unit is powered by a 125 HP, 4-cylinder turbo charged Tier 4 diesel engine. Electric starting and engine instruments are standard.
The drill frame is a weldment, constructed of heavy wall rectangular steel tubing, with sufficient strength and rigidity for heavy duty use.
Clutch – 13 inch (330 mm) automotive type.
Transmission – Heavy duty helical gear transmission with 5– 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 #100 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.
- Spindle Bore: 3.5″ (89mm)
- Spindle Travel:
- Thrust @ 2300 PSI
- UP: 32,515 lbs. (145 kN)
- DOWN: 21,450 lbs. (95 kN)
- Max Feed Rate:
- UP: FPM 41 (13m/min)
- DOWN: FPM 74 (23m/min)
- UP REGENERATIVE: 64 FPM (20m/min)
- Max Gross Spindle Torque:
- 1st gear up to 12,428 ft.lbs. (16,850 Nm)
- Max Spindle Speed:
- 1st gear – 70 RPM
- 5th gear – 566 RPM
** Detented feed with rapid retract is available
On the D-90 unit, oil is supplied by a heavy-duty gear type two-section pump rated at 19 GPM (72 L/min) and 28 GPM (106 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. The 4-1/4” (108mm) I.D. HSA box is standard but other sizes are available.