DTH Machine

Henan Yugong Machinery Co., Ltd.:Your Professional DTH Machine Manufacturer!

Our company has more than 20 years old history. Down-the-hole drilling rigs are widely used in blasthole drilling and underwater drilling, blasting and reef blasting projects in open-pit projects such as metallurgy, mining, building materials, railways, hydropower construction, national defense construction, and earthwork. Drilling diameter from 90 mm to 400 mm, and drilling depth from 10m to 50m. For more details, please contact us.

Why Choose Us

High Quality

Our drilling rigs adopt durable materials, built with high-tensile steel and premium components to manufacture the drilling rigs. All machines will be tested strictly before leaving the factory.

After Service

We have considerable after-sales services. Before shipment, we will send pictures and videos to customers who ordered. When the machine is received, we will provide the operating video if needed.

Customization Service

If you have specific requirements, we support customizable services. For more details, please contact us freely.

24H Online Service

We provide 24-hour online service. If you have any questions during the process, please contact us and we will reply to you as soon as possible.

Advantages of DTH Machine

High Penetration Rates
By combining percussion and rotation, DTH machine achieve faster drilling speeds compared to traditional methods. This reduces project timelines and labor costs.

Superior Accuracy and Hole Quality
The direct energy transfer minimizes deviation, ensuring straight, consistent boreholes. This is critical for applications like piling and geothermal installations.

Adaptability to Hard Rock
DTH machine outperform other drills in hard, abrasive formations. Their robust design reduces downtime caused by bit wear or equipment failure.

Flexibility
The drilling position and angle can be flexibly adjusted to adapt to different geological conditions and mining needs.

Technical Parameters

Model	YG-420
Weight	5200KG
Dimension	590022502700mm
Drilling hardness	F=6-20
Drilling diameter	φ90-152mm
Depth of economical drilling	20m
Rotary speed	0-90rpm
Rotary torque	5000N·m(Max)
Lifting force	40KN
Method of feed	Oil cylinder+roller chain
Feed stroke	3175mm
Traveling speed	0-2.5km/h
Climbing capacity	≤30°
Ground clearance	500mm
Leveling angle of track	±10°
Compensation length of beam	900mm
DTH hammer	K40
Drilling rod	φ762m+φ763m
Air consumption	13-20m³/min
Maximum height of horizontal hole	2750mm
Minimum height of horizontal hole	350mm

Application of DTH Machine

01/

Mining:
DTH machines are extensively used in the mining industry for various applications, including exploration drilling, production drilling, and blasting in hard rock mines. They are crucial for extracting minerals and ores efficiently.

02/

Quarrying:
In quarrying operations, DTH machines are employed for drilling blast holes, extracting stone blocks, and shaping rock surfaces. The precision and efficiency of DTH drilling make it suitable for quarry applications.

03/

Construction:
DTH machines are used in construction projects for tasks such as foundation drilling, piling, and anchoring. They can efficiently penetrate hard rock or compacted soil, providing a reliable method for creating boreholes.

04/

Water Well Drilling:
DTH machines are utilized in water well drilling projects, especially in regions with hard or rocky subsurface conditions. These rigs can efficiently penetrate through various geological formations to access water sources.

05/

Geotechnical Exploration:
DTH machines are employed in geotechnical investigations for soil and rock sampling. They play a crucial role in collecting samples for analyzing subsurface conditions and determining the suitability of the ground for construction

06/

Oil and Gas Exploration:
DTH machines are used in oil and gas exploration for drilling boreholes to assess subsurface formations and locate potential hydrocarbon deposits. They are particularly effective in hard rock formations.

07/

Foundation Engineering:
DTH drilling rigs are used in foundation engineering for creating boreholes for soil investigation and in-situ testing. They help engineers understand the geological conditions for designing stable foundations.

08/

Environmental Monitoring:
DTH machines are employed in environmental monitoring projects to collect soil and rock samples for assessing the impact of various pollutants and contaminants in the ground.

Components of DTH Machine

Drilling rig

The drilling rig is the core component of a DTH drilling vehicle, which is mainly responsible for providing drilling power and controlling the movement of the drill bit. Generally speaking, the drilling rig’s design focuses on the structure’s stability and durability to cope with high-intensity working environments.

Propulsion device

This device is responsible for pressing the drilling rig to the ground to increase the drilling speed and efficiency of the drill bit.

Power system

The power sources of DTH drilling rigs are diverse, including diesel engines, electric motors, etc. Different power systems can be selected according to the working environment and engineering requirements to adapt to different usage scenarios.

Control system

DTH machines are mostly equipped with intelligent control systems, which can realize the automatic management of the drilling process, monitor drilling parameters, and improve operating efficiency and safety. At the same time, the equipped sensors can collect geological information in real time for subsequent analysis.

Maintenance of DTH Machine

Proper maintenance is essential for ensuring the optimal performance and long service life of DTH machine. Some of the maintenance tasks that should be performed regularly include

Lubrication

All moving parts of the rig should be lubricated regularly to prevent wear and tear.

Inspection

The rig should be inspected regularly for any signs of wear, damage, or malfunction.

Cleaning

The rig should be cleaned regularly to remove dirt, dust, and debris that may accumulate on the machine.

Replacement of worn parts

Any worn or damaged parts should be replaced immediately to prevent further damage to the rig.

Packaging and Shipping

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Our Certificate

FAQ

Q: How long is your delivery time?

A: The specific time depends on the model and quantity. If the machine is in stock, it usually takes 3-5 days. If it is customized, it will take 15-30 days.

Q: Do you provide samples? Is it free or extra?

A: Yes, we could offer you the sample machine. But it's not free.You need to pay for the sample and the cost of freight.

Q: What is your terms of payment?

A: We accept T/T, Westem Union, Money Gram, Paypal, etc.
Payment<=USD 5000,100% in advance. Paymenb>=USD 5000, 30% T/T in advance, the balance 70% should be paid before delivery..

Q: How does your factory do regarding quality control?

A: Quality is the most important principle. Yugong people always attach great importance to quality controlling from the very beginning to the very end. Our factory has passed ISO and CE certification.

Q: What about warranty and do the engineers available to overseas?

A: One year warranty. During this period, if the machine has some problems, our engineers can go abroad to fix for you.

Q: What is the difference between rotary and DTH?

A: Both TH and DTH belong to the percussive drilling methods. Rotary is using a high pulldown weight on the rotary bit to crush the rock. TH is typically for small diameter hole drilling, DTH is for medium range hole sizes, and rotary can drill medium to large diameter blastholes.

Q: What size are DTH hammer bits?

A: DTH hammer bits are available in sizes from 2" to 36", with all shanks, multiple head/face designs, and with a variety of tungsten carbide button styles to suit a wide variety of drilling conditions.

Q: What are the advantages of DTH drilling?

A: Deep Drilling Capability: DTH drilling is particularly effective in deep-hole applications, allowing for precise and reliable drilling at significant depths. Low Deviation: The straightness and accuracy of DTH drilling ensure minimal deviation, making it suitable for projects where precision is critical.

Q: What is DTH drilling?

A: A down-the-hole drill, usually called DTH by most professionals, is basically a jackhammer screwed on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or drilling mud).

As one of the leading dth machine manufacturers and suppliers in China, we warmly welcome you to buy high quality dth machine at competitive price from our factory. For more cheap products, contact us now.

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