| Make: | PRL |
|---|---|
| Model & Type | PDTH-50, DTH drilling rig |
| Capacity : DTH Drilling | |
| Capacity : DTH Drilling | 4 « inch (114.3 mm) |
| Drill Rod Diameter | 3 inch (76 mm) |
| Drill Rod Length | 5 feet (1.5 meter) |
| Max Depth | 100 meters |
| Carrier | Skid for the mounting of drill rig |
| Mounting Structure | Tripod base with 3-Mechanical Jacks. |
| Mast Assembly | Sturdy structural channel mast structure electrically welded. |
| Mast overall length | 2,500 mm |
| Rotary head travel | 1,600 mm |
| Centralize opening | 8 inch (204 mm) |
| Feed System | Feed & Hoist actuation: Pulley, Wire rope & Hydraulic cylinder. |
| Feed cylinder Size & stroke | Dia 80 mm x Dia 50 mm x 800 mm long. |
| Pull Up | 3,500 Kg-f |
| Pull Down | 2,100 Kg-f |
| Hoisting speed | (up) 12.5 meter/ minute |
| Reeving Ratio | 1:02 |
| Having adequate travel to handle drill pipes and casing pipes up to 1.5 meter Long. | |
| Feed system consists of hold back arrangement to control limit weight on bit, rapid and slow feed arrangement to suit variable ground condition. | |
| Rotary Head Assembly (Top HeadDrive) | Fabricated steel body |
| Torque | 146 kg-m |
| Rotation Speed | Spindle rpm: 0-25 rpm |
| The RH unit travels on mast assembly to absorb sudden shock loads encountered during drilling Operation. | |
| Hydraulics | The entire equipment is designed to operate at high temperature encountered in the normal weather conditions. |
| Open loop circuit with variable displacement piston pumps and proportional valves for feed and rotation. Diverted valves for auxiliary drives. | |
| Max operating pressure | 140 kg/cmý |
| Hydraulic Tank capacity | 200 liters. |
| Filtration (Nom) ? Return line | 10/25 microns |
| Cooling: Fin type oil to air. | |
| Control Panel | All necessary control and monitoring valves and gauges are installed at control panel located nearer to drilling point for driller convenience |
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