Product Advantage
400m medium-deep drilling capacity for deep groundwater exploitation
Max drilling depth reaches 400 m with hole diameter 105–305 mm, suitable for medium-deep water supply wells and industrial water wells, exceeding the depth coverage of 200m and 300m shallow rigs.
*9900 N·m high torque & 28-ton main lifting capacity for stable deep-hole operation
Maximum torque 9900 N·m, main lifting capacity 28 tons and axial pressure 5 tons. It ensures smooth tripping of drill strings and casing running, and reduces the risk of drill pipe sticking in hard rock.
*Dual drilling modes; compatible with air compressor for DTH hammer hard rock drilling
Mud rotary drilling handles soil and gravel. When connected with an air compressor, it works with DTH hammer for percussive drilling in hard rock. Applicable air pressure:1.25–3.5 MPa, air consumption:16–55 m³/min.
*Yudong 92KW high-power diesel engine for fully off-grid operation
Equipped with 92KW Yudong diesel engine with sufficient power reserve. It can operate continuously in remote mountain and mining sites without external power supply.
*6m long drill rod design to cut auxiliary working time
Compatible with 6m drill rods (89mm/102mm recommended). Compared with 3m/4m short rods, it reduces pipe connection and breakout work and improves overall efficiency for 400m deep wells.
*Four-wheel towable chassis and hydraulic outriggers
The 10-ton machine features strong stability. Hydraulic outriggers with 1.35m stroke enable quick leveling on uneven ground. Travel speed 2.5 km/h allows short-distance movement within construction sites.
*Diversified optional accessories for flexible configuration
Optional mud pump, centrifugal pump, foam pump and generator. It can be matched with full series of medium & high pressure DTH hammers. Customers can choose mud drilling or air compressor + DTH hammer drilling according to geology.
Technical Parameters
400m Water Well Drilling Rig |
Name | Parameters | Name | Parameters |
Max Drilling Depth | 400 m | Auxiliary Lifting Capacity | 1.5 T |
Drilling Diameter | 105–305 mm | Leg Stroke | 1.35 m |
Air Pressure | 1.25–3.5 MPa | Penetration Rate | 10–35 m/h |
Air Consumption | 16–55 m3/min | Travel Speed | 2.5 km/h |
Rod Length | 6 m | Climbing Ability | 21 |
Recommended Rod Diameter | 89/102 mm | Weight | 10 T |
Axial Pressure | 5 T | Overall Dimensions | 5.6x2x2.5 m |
Lifting Capacity | 28 T | Applicable Conditions | Loose &Bedrock Formations |
Fast Travel Speed | 25 m/min | Drilling Method | Top Drive Hydraulic Rotary,DTH Hammer or Mud Drilling |
Fast Feed Speed | 47 m/min | Optional DTH Hammer | Medium &High Air Pressure Series |
Max Torque | 9900 N·m | Optional Accessories | Mud Pump,Centrifugal Pump,Generator,Foam Pump |
Max Rotation Speed | 80/160 r/min | Engine | Yudong:92KW |
Special Notes | Customizable Models:All drilling machines can be tailored to your needs.
Accessories:Model-specific parts may vary;manufacturer’s installation list prevails.
Working Air Pressure / Air Consumption:Only applicable to DTH (Down-the-Hole) hammer drilling (with air compressor) working conditions |
Product Uses
For bedrock mountain regions, the rig can be equipped with an air compressor and DTH hammer to drill hard rock efficiently down to 400 m. It solves the shortage of shallow water resources and meets centralized water supply demands of villages.
It develops stable medium-deep underground water for large planting bases. Operators can switch between mud drilling and air compressor DTH drilling according to formations to guarantee continuous agricultural water supply.
Drill production water wells within 400 m for plants and mines. The independent diesel engine works without grid power. An air compressor can be connected for hard rock construction to adapt to complex geological conditions.
FAQ
Q1: What geological formations is ST400 suitable for?
A1: It supports mud rotary drilling and DTH hammer drilling. It adapts to loose soil, sand, gravel and weathered & intact bedrock. For hard rock drilling, an air compressor needs to be equipped separately.
Q2: What are the core technical parameters of ST400?
A2: Max drilling depth:400 m, drilling diameter:105–305 mm, max torque:9900 N·m. Powered by Yudong 92KW diesel engine, main lifting capacity 28 T. Recommended drill rod:89mm / 102mm, 6m length. Machine weight:10 tons.
Q3: Can this rig work with air compressor? What are the requirements?
A3: Yes. For DTH hammer hard rock drilling, it can be matched with air compressor. Required working pressure:1.25–3.5 MPa, air consumption:16–55 m³/min. The matched air compressor adopts independent diesel power, no external grid power required. The air compressor is not included in standard configuration and needs separate purchase.
Q4: What is the difference between ST400, ST300 and ST200?
A4: ST200 (200m, 4.5T) and ST300 (300m,8T) for shallow & medium wells. ST400 reaches 400m with larger torque and lifting power. It adopts 6m drill rods, better for deep boreholes and continuous hard rock drilling with air compressor.
Q5: Does the rig or supporting equipment need external electricity on site?
A5: No. The ST400 rig is driven by built-in 92KW diesel engine. The matched air compressor is also equipped with independent diesel power unit. The whole drilling system can operate completely off-grid without external mains power.
