KH843 Integrated DTH Drilling Rig | 90–115mm Hole Diameter | Cost-Effective Mining Drill Machine

The integrated open-pit DTH drilling rig is a high-efficiency drilling system that combines the DTH drilling unit and the screw air compression system into a single integrated machine. This compact design ensures stable air supply, improved energy efficiency, and easier on-site operation compared to traditional split-type equipment.

The rig is capable of drilling vertical, inclined, and horizontal holes, making it highly versatile for different blasting and rock engineering requirements. It is widely used for drilling blast holes and pre-split holes in open-pit mining, quarry operations, and various rock engineering projects.

Equipped with a high-efficiency dust collection system, the machine effectively reduces dust emissions during operation, improving working conditions and meeting modern environmental protection standards in mining and construction industries.

With its integrated structure, strong adaptability, and efficient drilling performance, this rig is a reliable solution for modern open-pit mining operations.

Quzhou Mazellion Heavy Industry Technology Co., Ltd. is a professional manufacturer of diesel screw air compressors and mining drilling equipment, serving global mining, quarry, water well drilling, and construction projects. We provide factory-direct supply, stable quality, and full OEM customization to help customers win local markets with better cost performance and reliability.

To start cooperation: send your inquiry → get a tailored technical solution & quotation → confirm order → production & testing → fast shipment → long-term spare parts & technical support. We respond quickly and support you throughout the whole project.

The KH103 DTH Drilling Rig is suitable for a wide range of drilling environments:

· Open-pit mining drilling operations

· Quarry blasting hole drilling

· Road construction and slope stabilization

· Foundation engineering drilling

· Rock blasting for infrastructure projects

· Medium-hard to hard rock formations

· Water well auxiliary drilling (shallow depth)

It is especially suitable for projects requiring 90–115mm hole diameter drilling with high stability and efficiency.

1. Integrated Energy-Saving Design

The KH103 / KH105 adopts an integrated drilling system with a built-in air compressor directly matched to drilling demand, significantly reducing energy loss compared to split-type equipment.

By eliminating long-distance air transfer and pressure loss, it achieves approximately 25% energy savings, making it a more efficient and cost-effective solution for mining operations.

2. One-Stop Integrated System, Lower Labor Requirement

The drilling rig and air compressor are fully integrated into one machine, solving traditional mining problems such as compressor transportation, remote management, and compressed air loss.

This design significantly reduces manpower requirements and simplifies on-site operation and equipment coordination.

3. High-Efficiency Hydraulic Dust Removal System

Equipped with a high-performance hydraulic dust suppression system, the machine effectively controls dust emissions during drilling.

It fully meets modern mining environmental protection standards and supports cleaner, safer, and greener mining operations.

4. Optimized Power Matching for Lower Fuel Consumption

The diesel engine and screw air compressor are precisely matched for optimal power distribution, ensuring stable air output while minimizing fuel consumption.

This intelligent power system improves drilling efficiency while reducing overall operating cost.

5. Heavy-Duty Structure with Easy Maintenance Design

Built with a high-strength steel frame, the machine ensures excellent stability and long service life under harsh mining conditions.

A spacious internal layout improves heat dissipation and allows easy access for maintenance, while the high-torque travel system provides strong off-road capability for both mountainous and flat terrain operations.

Q1: What is the difference between KH103 and KH105?

KH103 is designed for 90–115mm hole diameter drilling, while KH105 supports a wider range of 90–140mm, with higher torque (3500 N·m) for harder rock formations.

Q2: What is the drilling depth of these models?

Both models have a maximum drilling depth of approximately 21 meters, depending on geological conditions and drilling configuration.

Q3: What engines are used in KH103 and KH105?

· KH103: 176KW Yuchai National III engine (Yuchai)

· KH105: 191KW Yuchai China III engine (Yuchai)

Other engine brands can be customized upon request.

Q4: What compressor system is used?

Both models are equipped with a two-stage 18m³/min air compressor:

· KH103: 18 Bar

· KH105: 20 Bar

Ensuring stable airflow for efficient DTH hammer drilling.

Q5: Can the machine operate in mountainous areas?

Yes. The high-torque travel system and dual-speed walking mode make it highly suitable for mountainous terrain, uneven ground, and mining roads.

Q6: What is the difference in structure between KH103 and KH105?

KH103 uses a high-strength aluminum guide beam with hydraulic propulsion, while KH105 uses a steel beam with motor + chain feed system for higher rigidity and stronger drilling force.

Q7: Is maintenance easy?

Yes. Both models feature a spacious internal layout, allowing easy access for inspection, maintenance, and replacement of key components.

Q8: Can drill rods and hammer systems be customized?

Yes. Different configurations of drill rods (64 or 76 rods) and impactor sizes (3-inch / 4-inch) are available depending on project requirements.