DR-140T DTH Drilling Rig
Depth 180 m · 130–254 mm · Engine 42 kW
The DR-140T DTH Drilling Rig is a crawler-mounted pneumatic rig with a 180 m drilling-depth rating, a 130–254 mm hole-diameter range and a 42 kW Yunnei engine.
Technical specifications
| Model | DR-140T |
|---|---|
| Drilling depth | 180 m |
| Hole diameter | 130–254 mm |
| Engine manufacturer | Yunnei |
| Engine power | 42 kW |
| Chassis | Rubber crawler |
| Working air pressure | 1.45–2.5 MPa |
| Air consumption | 17–31 m³/min |
| Drill-pipe diameter | 76 / 89 mm |
| Drill-pipe length | 1 / 2 / 3 m |
| Rotary torque | 3,500–3,800 N·m |
| Rotary speed | 40–65 rpm |
| Travel speed | 2.5 km/h |
| Machine weight | 4.5 t |
| Dimensions | 3,500 × 1,700 × 2,250 mm |
Rotary head and mast carriage
The rotary head is carried on a sliding carriage along the mast guide rails. Rotary torque is 3,500–3,800 N·m and rotary speed is 40–65 rpm. Hydraulic hoses connect to the head above the drill-string connection.
Grouped manual controls
The control station combines round gauges and manual operating levers on the side of the machine. The main black panel and adjacent lever bank sit below the folded mast, beside the engine enclosure.
DR-140T DTH Drilling Rig: drilling and air supply
The DR-140T DTH Drilling Rig uses a down-the-hole hammer for pneumatic drilling. The rig combines a rotary head, guide mast and crawler chassis, with a Yunnei engine powering the machine.
What air supply does the rig use?
Working air pressure is 1.45–2.5 MPa and air consumption is 17–31 m³/min. The pneumatic drilling system uses an air compressor.
Which drill-pipe sizes are available?
Drill-pipe diameters are 76 and 89 mm, with lengths of 1, 2 and 3 m. Rotary torque is 3,500–3,800 N·m and rotary speed is 40–65 rpm.
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