KC350 Fully Hydraulic Water Well Drilling Rig – Heavy-Duty Deep Drilling with High-Power Motor & Rapid Water-Air Switching (350m Depth)

The KC350 Fully Hydraulic Water Well Drilling Rig is a heavy-duty deep drilling solution engineered for large-scale water well, geothermal, and infrastructure projects demanding maximum power and productivity. Equipped with a high-power hydraulic motor, the KC350 delivers exceptional driving force that significantly boosts working efficiency and penetration rates in the most demanding formations – ensuring faster project completion and reduced operating costs.

The rig features a rapid water-air switching valve that enables instant, seamless transition between mud and air drilling media based on real-time formation conditions. This precision control system ensures smoother, more accurate drilling with optimal speed and force management, reducing bit wear and improving overall hole quality while maintaining effective penetration across varied geological conditions.

With 350m maximum drilling depth, 140–325mm hole diameter range, swing torque of 6200–8500 N·m, and a 6.6m one-time advance length, the KC350 is built for serious deep drilling operations. The rig supports Φ89 and Φ102 drill pipes with 6.0m length options, significantly reducing pipe handling time and boosting single-shift footage. An 18 m/min rapid rise speed and 33 m/min fast feeding speed further enhance cycle efficiency, while the 22T lifting force provides ample capacity for deep-hole operations.

Powered by a reliable 91kW Yuchai engine and built on a durable steel track undercarriage, the KC350 delivers consistent, dependable performance even in remote locations. The rig comes standard with a mud pump for conventional water drilling and can be factory-configured for dual-purpose water-air operation, enabling seamless transition to DTH hammer drilling for rapid hard rock penetration with full system integration and warranty coverage. From deep municipal water wells to large-scale geothermal fields and heavy foundation piling, the KC350 delivers the capability, durability, and precision you need to take on the most challenging large-scale projects with confidence.

1. Deep Municipal & Industrial Water Wells

With 350m maximum drilling depth, the KC350 accesses deep groundwater resources for municipal water supply, industrial processing, and large-scale agricultural irrigation projects where standard rigs cannot reach.

2. Large-Scale Geothermal Fields

The 140–325mm hole diameter range and 6.6m advance length accommodate large commercial and institutional geothermal borehole arrays, delivering the precision and efficiency required for dense, high-volume drilling programs.

3. Heavy Foundation Piling & Infrastructure

Applied in bridge foundations, high-rise building piling, dam construction, and heavy infrastructure projects where the 6200–8500 N·m swing torque and 22T lifting force deliver reliable performance in demanding conditions.

4. Deep Exploration & Geotechnical Drilling

Employed in mineral exploration and deep geotechnical investigation programs requiring deep penetration, reliable core recovery, and adaptability across varied formations.

5. Hard Rock & Challenging Formations

The high torque output, rapid water-air switching, and wide pressure range (1.7–3.4 MPa) enable efficient drilling through hard rock, fractured formations, and other challenging geological conditions.

1. High-Power Motor for Superior Driving Force

Equipped with a high-power hydraulic motor, the KC350 delivers exceptional driving force that significantly boosts working efficiency and penetration rates, enabling faster project completion and reduced operating costs in the most demanding formations.

2. Rapid Water-Air Switching for Precision Control

The quick-change valve enables instant, seamless transition between mud and air drilling media based on real-time formation conditions – ensuring smoother, more accurate drilling with optimal speed and force management while reducing bit wear and improving hole quality.

3. Powerful 91kW Yuchai Engine

Powered by a reliable 91kW Yuchai engine delivering consistent, robust output for the most demanding deep drilling operations, ensuring productive performance even in remote locations where equipment reliability is critical.

4. Extended 350m Depth with 6.6m Advance

With 350m maximum drilling depth and 6.6m one-time advance length, the KC350 handles the deepest projects while minimizing pipe handling time and boosting single-shift footage for maximum productivity.

5. High Torque & Wide Speed Range

Delivering swing torque of 6200–8500 N·m with swing speeds of 66–135 rpm, the KC350 provides exceptional rotational power and speed flexibility for efficient penetration across varied formations, maximizing drilling speed while minimizing bit wear.

6. Large Diameter Pipe Compatibility

Supporting Φ89 and Φ102 drill pipes with 6.0m length options, the KC350 accommodates large-diameter deep hole operations while reducing connections and handling time for improved efficiency.

7. Heavy-Duty Lifting Capacity

With 22T lifting force, the KC350 provides ample capacity for deep-hole operations, ensuring reliable pipe handling and reducing cycle time for deep drilling projects.

8. Factory-Configurable Dual-Purpose Water-Air Operation

The KC350 comes standard with a mud pump for conventional water drilling and can be factory-configured for dual-purpose water-air operation, enabling seamless transition to DTH hammer drilling for rapid hard rock penetration with full system integration and warranty coverage.

9. Field-Ready Design for Greater Productivity

Equipped with an integrated winch for efficient drill pipe handling and lifting, a built-in welding machine for quick on-site repairs, and an access ladder for safe, convenient maintenance. The 6.6 m single-stroke feed system reduces rod-changing frequency, improves drilling efficiency, and enables faster penetration in deep drilling applications. Together, these practical features maximize productivity, minimize downtime, and enhance overall jobsite performance.

Q1: High-Power Motor for Superior Driving Force

Equipped with a high-power hydraulic motor, the KC350 delivers exceptional driving force that significantly boosts working efficiency and penetration rates, enabling faster project completion and reduced operating costs in the most demanding formations.

Q2: Rapid Water-Air Switching for Precision Control

The quick-change valve enables instant, seamless transition between mud and air drilling media based on real-time formation conditions – ensuring smoother, more accurate drilling with optimal speed and force management while reducing bit wear and improving hole quality.

Q3: Powerful 91kW Yuchai Engine

Powered by a reliable 91kW Yuchai engine delivering consistent, robust output for the most demanding deep drilling operations, ensuring productive performance even in remote locations where equipment reliability is critical.

Q4: Extended 350m Depth with 6.6m Advance

With 350m maximum drilling depth and 6.6m one-time advance length, the KC350 handles the deepest projects while minimizing pipe handling time and boosting single-shift footage for maximum productivity.

Q5: High Torque & Wide Speed Range

Delivering swing torque of 6200–8500 N·m with swing speeds of 66–135 rpm, the KC350 provides exceptional rotational power and speed flexibility for efficient penetration across varied formations, maximizing drilling speed while minimizing bit wear.

Q6: Large Diameter Pipe Compatibility

Supporting Φ89 and Φ102 drill pipes with 6.0m length options, the KC350 accommodates large-diameter deep hole operations while reducing connections and handling time for improved efficiency.

Q7: Heavy-Duty Lifting Capacity

With 22T lifting force, the KC350 provides ample capacity for deep-hole operations, ensuring reliable pipe handling and reducing cycle time for deep drilling projects.

Q8: Factory-Configurable Dual-Purpose Water-Air Operation

The KC350 comes standard with a mud pump for conventional water drilling and can be factory-configured for dual-purpose water-air operation, enabling seamless transition to DTH hammer drilling for rapid hard rock penetration with full system integration and warranty coverage.

Q9: Stable, Reliable Performance

The robust hydraulic system and proven Yuchai engine combination ensures consistent performance with minimal downtime, keeping large-scale operations running continuously and profitably.