DTH drilling equipment, also known as DTH drilling rig, is a widely used rock drilling machine for geotechnical projects. It uses strong air pressure to drive the drill bit to hit and break rocks, and finish deep hole drilling at the same time. We make two main types of DTH drilling equipment: crawler type and portable type, each with clear and practical parameters to fit different work needs. Our machines have been sold to many construction teams across Saudi Arabia, Oman, Afghanistan, South Africa, Brazil, Peru, Chile and Zimbabwe, chosen for their stable performance and strong adaptability.
YG Hot-sale DTH Borewell Machine Parameter
| Model | YGS100A | YGS153 | YGS180 | YGS300 | YGS350 |
| Total weight | 5.95T | 3.8T | 6.3T | 6.8T | 8T |
| Walking speed | 2.5km/h | 2.5km/h | 2.5km/h | 2.2/3.8km/h | 4km/h 2km/h |
| Diesel tank capacity | 85L | 70L | 85L | 85L | 225L |
| Shipping size | 6500*2100*2400mm | 4640*1980*2260mm | 6600*2110*2500mm | 6600*2220*2600mm | 7600*2350*2800mm |
| Drilling hole diameter | 90-146mm | 83-130mm | 90-146mm | 90-152mm | 90-165mm |
| Power configuration | YCD4R22T-80 | YC2108 33kw/2400rpm | YCD4R22T-80 55kw | YC4DK80-T302 | YC4DK100-T304 73.5kw/2200rpm |
| Highest horizontal hole height | 3.2m | 2.8m | 3.6m | 3.25m | 3.5m |
How Does Down the Hole Drilling Rig Work Differently From Traditional Drilling Tools?
A traditional top-hammer drilling rig places the impact part on the top of the drill rod. It sends impact force through the long drill rod to the bit. A lot of energy loses during this process, so the drilling speed is slow on hard rocks.
YG down the hole drilling rig changes this design completely. It fixes the impactor directly behind the drill bit. When the machine works, the impactor goes into the drill hole together with the bit. The impact force acts on rocks right at the bottom of the hole. Almost no energy wastes in transmission. This simple but smart design greatly improves working efficiency.
The core power part of the DTH drilling machine is a high-power impactor. The air pressure can reach up to 2.5MPa, and the impact frequency hits 1500 strokes every minute. When working on hard rock layers, its drilling speed is over 60% faster than old-style drilling machines. It can drill holes from 80mm to 200mm in diameter, and the maximum drilling depth is 30 meters. For mine blast holes, foundation reinforcement holes and geological exploration holes, this working mode is perfect.
Whether you work in mountain areas, open mines or construction sites, the down the hole drilling rig keeps steady power output. It will not slow down easily when meeting hard rock or mixed soil layers. Many field workers say this working structure cuts down their total construction time obviously.
What Key Advantages Make DTH Borewell Machine Stand Out On Construction Sites?
Our DTH borewell machine has six clear advantages that solve common troubles on construction sites. Every design is made based on real field work experience, so it is easy to use and reliable for workers from different countries.
1.High Drilling Efficiency With Strong Air Pressure
The high-pressure impact system handles hard rocks easily. On hard gold rock or granite, it can finish 1.2 meters of drilling per minute. It finishes more drilling tasks each day and shortens the whole project cycle.
2.Fit For Multiple Geological Conditions
You can change different drill bits for different ground. It works well on soft soil, sand layers, limestone and granite.
3.Intelligent & Stable Control System
The machine uses a PLC intelligent control system. Workers can check drilling depth, air pressure and rotation speed in real time. It has depth preset and automatic stop functions to avoid over-drilling. The vertical angle of drill rods can be adjusted freely. The hole position error is less than ±2 degrees, so you do not need to rework many holes.
4.Energy-Saving Performance
The optimized impactor and frequency conversion technology adjust air pressure and rotation speed automatically according to rock hardness. It saves over 20% energy compared with similar machines. The high-pressure air can recycle inside the equipment, and rock debris gets discharged quickly to reduce extra energy loss.
5.Flexible Use In Different Scenarios
We have crawler type and portable type for choices. Crawler models walk steadily on muddy and bumpy roads. Portable DTH drilling equipment only weighs 50kg to 150kg. Workers can carry it by hand to narrow spaces, such as underground mine tunnels and small mountain gaps.
6.Complete Safety Protection
Multiple safety devices keep users and machines safe. It has air pressure overload protection, motor over-temperature protection and drill rod break warning. An emergency stop button and rock debris baffle are also equipped. Even in busy working areas, the risk of accidents drops greatly.
These advantages make the dth borewell machine popular in many regions. It adapts to hot, dry weather in Saudi Arabia and Oman, hard rock mines in South Africa and Zimbabwe, and complex landforms in Brazil, Peru and Chile.
DTH Drilling Equipment Customer Case Study: Saudi Arabia Gold Mine Project
YG DTH drilling equipment has served many large projects around the world. A typical case is a large gold mine project in Saudi Arabia. The mine mainly has hard gold-bearing rocks, which are hard to drill. The old drilling tools had low speed and big hole position errors, so the mining progress was slow and gold recovery rate was not high.
The Saudi Arabia mine team bought 15 sets of YGS180 crawler DTH drilling machine for blast hole drilling, and 5 portable down-the-hole drilling rig for small exploration holes in underground tunnels. After putting our machines into use, the whole work changed a lot.
- Drilling efficiency rose sharply: Each machine could finish 90 blast holes every day. The total work efficiency increased by 72%, and the blast hole construction cycle became 60% shorter.
- Hole accuracy got improved: The hole position error was controlled within ±2 degrees. Better blasting effect helped raise the gold recovery rate from 85% to 92%.
- Maintenance cost dropped: The stable structure and wearable parts reduced daily repair work. The overall maintenance cost decreased by 40%.
- Portable machines worked well in narrow underground spaces. They provided accurate geological data for tunnel digging work.
The local customer gave positive feedback. They said our DTH drilling equipment became core equipment for their gold mining work. The high-pressure design solved all hard rock drilling problems. The machines run steadily, are easy to fix, and the after-sales support is timely.
This project result proves that our machines can meet strict work demands in tough mining environments. Whether for large open mines or small underground exploration work, the equipment shows reliable performance.
What Supporting Tools & Service Do You Get With DTH Drilling Equipment?
When you choose our DTH drilling equipment, you will get matched supporting tools and full services to make your work smooth.
First, we provide all necessary supporting equipment for normal operation. The main matching tools include air compressors, generators, different types of drill bits and complete drill rods. All supporting parts are fully compatible with our main machines. You do not need to spend extra time checking matching problems.
Our drill rods are made of wear-resistant alloy steel. With normal maintenance, one drill rod can be reused more than 200 times. We also offer drill rod flaw detection service to make sure every rod is safe to use.
We provide free professional technical training for all buyers. The training covers equipment operation, parameter adjustment, drill bit replacement and daily maintenance. Our professional technical team can also give targeted construction plan guidance according to your local geological conditions and project needs. This service helps your team start formal work quickly without running into technical troubles.
Many users from Saudi Arabia, Oman, Afghanistan, Brazil, Peru, Chile and Zimbabwe have received our training and supporting tools. They can operate the DTH borewell machine skillfully and deal with small problems on site by themselves.