DR-400 Water Well Drilling Rig
Depth 280 m · 140–305 mm · 75 kW
The DR-400 Water Well Drilling Rig combines a 75 kW Yuchai engine, a 6.6 m feed stroke and a crawler chassis for drilling to 280 m with 140–305 mm holes.
DR-400 Water Well Drilling Rig: drilling configurations
The DR-400 Water Well Drilling Rig is a hydraulic crawler rig powered by a 75 kW Yuchai turbocharged engine. Its drilling-depth rating is 280 m and its hole-diameter range is 140–305 mm.
Which drilling configurations are available?
The rig supports air drilling with an air compressor and mud drilling with a mud pump.
Which drill-pipe diameters does it use?
The drill-pipe diameter options are 76 and 89 mm.
Hydraulic mast feed
The rotary head moves on a carriage along the mast, with a 6.6 m feed stroke. Rapid lifting speed is 25 m/min and rapid feed speed is 30 m/min. Hydraulic hoses run alongside the head and mast.
Crawler chassis and working supports
The steel crawler chassis carries the mast, engine enclosure and operator station. Travel speed is 2.5 km/h. Hydraulic outriggers extend around the frame, with individual footplates supporting the rig in the drilling position.
Technical specifications
| Model | DR-400 |
|---|---|
| Drilling depth | 280 m |
| Hole diameter | 140–305 mm |
| Machine weight | 7.6 t |
| Engine power | 75 kW |
| Engine manufacturer | Yuchai |
| Feed stroke | 6.6 m |
| Drill-pipe diameter | 76 / 89 mm |
| Rapid lifting speed | 25 m/min |
| Rapid feed speed | 30 m/min |
| Travel speed | 2.5 km/h |
| Air pressure | 1.7–3.0 MPa |
| Rotary torque | 4,500–6,000 N·m |
| Dimensions | 5,900 × 1,850 × 2,360 mm |