Product Description
The DR350 Water Well Drilling Rig is a heavy-duty hydraulic crawler drilling machine engineered for deep water well construction, geothermal drilling and large-scale water resource development projects. With a maximum drilling depth of 350 meters and borehole diameters ranging from 140mm to 350mm, the rig is designed to deliver outstanding performance in demanding geological conditions.
Equipped with a powerful 92kW Yuchai diesel engine, a high-capacity hydraulic system and an advanced rotary drive unit, the DR350 provides exceptional drilling power, high efficiency and reliable operation. Its extended feeding stroke and strong lifting capacity make it particularly suitable for deep drilling applications where productivity and stability are critical.
Designed for Deep Drilling Projects
The DR350 is built for contractors who require greater drilling depth and stronger pulling capacity than standard drilling rigs. The machine supports drill rods up to 6 meters in length, reducing rod connection frequency and significantly improving drilling efficiency on deep borehole projects.
Its reinforced mast structure and heavy-duty crawler chassis ensure stable performance during long-duration drilling operations, even in challenging terrain and difficult geological formations.
Powerful Hydraulic Drilling System
Featuring a maximum rotary torque of 9000N.m and rotary speeds up to 135rpm, the DR350 provides excellent penetration capability in rock, gravel and mixed formations. The hydraulic feeding system delivers precise control throughout the drilling process, ensuring smooth operation and consistent performance.
With a lifting force of 22 tons and a one-time feeding stroke of 6.6 meters, the rig can handle longer drill strings while reducing downtime and improving overall productivity.
Built for Productivity
The DR350 combines powerful drilling capability with efficient operation. High-speed lifting and feeding systems allow operators to complete drilling cycles more quickly, while the robust hydraulic system ensures reliable performance under continuous working conditions.
Its large air pressure range and air consumption capacity make the machine compatible with a variety of air compressors and drilling methods, offering flexibility across different projects and geological environments.
Technical Specifications
| Item | Specification |
| Bore diameter | 140-350mm |
| Bore depth | 350m |
| Air consumption | 17-36m³/min |
| Air pressure | 1.7-3.5Mpa |
| Pipe diameter | 89mm,102mm |
| Pipe length | 1m,2m,3m,6m |
| Lifting force | 22T |
| Lifting speed | 3m/min |
| feeding speed | 0.5-5m/min |
| Fast lifting speed | 33m/min |
| One-time advance length | 6.6m |
| Max torque of rotary | 6200-9000Nm |
| Rotary speed | 66-135r/min |
| Hoist lifting capacity | 2T |
| High hydraulic leg | 1.4m |
| Feeding efficiency | 10-35m/h |
| Travel speed | 2.5Km/h |
| Climb ability | 30° |
| Dimension（L*W*H) | 6000×2000×2550mm |
| Weight/T | 8.6T |
| Engine | 92KW YUCHAI |
Why Choose DR350
The DR350 is designed for customers who need more than a conventional water well drilling rig. Compared with medium-sized models, it offers greater drilling depth, higher rotary torque, a longer feeding stroke and stronger lifting capacity. These advantages help reduce operating time, improve drilling efficiency and increase profitability on large projects.
The ability to use drill rods up to 6 meters long further enhances productivity, making the DR350 an excellent choice for deep borehole construction and demanding drilling environments.
After-sales Service
We provide complete technical support, operator training, spare parts supply and remote troubleshooting services. Every DR350 drilling rig is thoroughly inspected and tested before delivery to ensure reliable field performance. Our professional service team is committed to supporting customers throughout the entire equipment lifecycle.
