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The down-the-hole (DTH) drilling rig is a high-efficiency rock drilling equipment widely used for water well drilling, geological exploration and construction engineering. It adopts mature DTH hammer working principle, featuring strong rock breaking capacity and stable operation.
The down-the-hole (DTH) drilling rig is a high-efficiency rock drilling equipment widely used for water well drilling, geological exploration and construction engineering. It adopts mature DTH hammer working principle, featuring strong rock breaking capacity and stable operation.
This machine integrates walking, rotating, feeding and drilling functions into one unit. It is easy to operate and flexible to move, adapting to complex working sites such as mountains, hills and uneven ground. The overall structure is compact and durable, with reliable performance and low failure rate, which effectively reduces maintenance costs.
Equipped with a professional power system and transmission structure, the rig delivers steady power output and high drilling efficiency. Its adjustable drilling angle and deflection range enable flexible construction in various operating conditions.
Normally, this DTH drilling rig needs to be matched with an air compressor to provide compressed air for the DTH hammer. Standard supporting accessories include drill rods and DTH hammers. It is a practical and cost-effective drilling solution for outdoor field operations.
| Model of drill rig | 420TF（Winch Model） | 420TA |
| Weight of complete machine | 5000KG | 4690KG |
| Outer dimensions | 5600X2308X2500 | 5600X2308X2500 |
| Supporting power | 73.5kw | 58kw |
| Drilling hardness | 6-20 | 6-20 |
| Drilling diameter | 110-200 | 110-140 |
| Rotation speed | 50-70 | 60-110 |
| Rotation torque (MAX) | 5000N.m | 3200 |
| Pull up force (MAX) | 45KN | 45KN |
| Method of feed | Cylinder+Chain Drive | Cylinder+Chain Drive |
| Feed stroke | 3670 | 3670 |
| Feed force (MAX) | 20KN | 20KN |
| Feed speed | 30m/min | 30m/min |
| 行走速度/Travelling speed | 3KM/h | 3KM/h |
| Climbing capacity | 25° | 25° |
| Ground clearance | 310 | 310 |
| Tilt angle od beam | Flip Angle:120° | Flip Angle:120° |
| Swing angle of boom | Left 90°/ Right 40° | Left 90°/ Right 40° |
| Pitch angle of drill boom | Elevation +51°/Depression-21° | Elevation +51°/Depression-21° |
| Swing angle of drill boom | Left 40°/ Right 35° | Left 40°/ Right 35° |
| Leveling angle of track | ±10° | ±10° |
| Compensation length of beam | 970 | 970 |
| Diesel tank volume | 70 | 70 |
| Hydraulic oil Quantity | 100 | 100 |
| Winch Pulling Force | 6 Ton | / |
| Steel Wire Rope(Diameter × Length） | 20mm/60m | / |
Processing Demand Survey
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