The hole drilling equipment is specially designed for efficient rock drilling in hard strata such as granite, limestone, and basalt. Equipped with a powerful diesel engine and hydraulic control system, the crawler chassis delivers excellent off-road performance, enabling flexible movement on mountain slopes, muddy mines and rugged construction sites. Featuring a stable sealing structure and dustproof and high-temperature-resistant design, the machine supports long-hour continuous operation. With simple operation, low failure rate, and affordable spare parts cost, it becomes essential construction machinery for global mining, infrastructure, and geotechnical engineering projects. If you are interested, please contact Yugong Machinery immediately for more information.
Crawler Down the Hole Drilling 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 |
6 Working Process for Down The Hole Drilling Rigs
The down the hole drilling rig is efficient hard rock down hole drilling equipment widely used in mining, road construction and quarry projects. Its full working process is simple, stable and highly mechanized.
1. Site Positioning & Equipment Stabilization
Operators drive the crawler down the hole drilling machine to the preset drilling position. Adjust the support legs to level and fix the whole machine, preventing shaking or deviation during high-intensity rock drilling. Accurate positioning ensures standard borehole spacing and angle.
2. Pre-operation Inspection & System Startup
Check air pressure, hydraulic system, and drill bit tightness. Start the diesel engine and air compressor to build stable air pressure. Test the rotation and feeding system to ensure all parts work normally before formal drilling.
3. Rock Drilling & Impact Breaking
Lower the drill bit to touch the rock surface. The DTH hammer inside the hole uses high-pressure air to generate high-frequency impact force. Meanwhile, the rotary system drives the drill rod to rotate slowly. The dual effect of impact and rotation crushes the hard rock layer by layer.
4. Air Discharge of Rock Slag
During drilling, continuous compressed air flows through the drill rod, blowing broken rock debris and dust out of the borehole. This automatic slag removal avoids hole blocking and ensures smooth and straight drilling.
5. Rod Extension & Deep Drilling
When the first drill rod reaches the limit depth, the machine automatically stops feeding. Operators connect a new drill rod and continue drilling until the hole meets the designed depth.
6. Hole Completion & Reset
After reaching the target depth, stop impact and rotation, lift the drill rod and hammer out of the hole. Retract the support legs and move the rig to the next drilling position to complete a full working cycle.
Real Customer Cases about Down Hole Drilling Equipment
Case 1: United States – Highway Slope Reinforcement Project
- Customer Background: The US customer works as an infrastructure contractor undertaking mountain highway renovation and slope anchor drilling tasks. Facing hard granite geology and strict local environmental rules, he selected the YGS180 down the hole drilling machine after comparing different DTH drilling machine price ranges.
- Difficulties:
- Hard granite stratum led to slow drilling speed and frequent drill bit damage with old equipment.
- Construction sites scattered across mountainous areas required flexible crawler equipment for frequent transfers.
- Limited horizontal working height on steep slopes demanded matched rig structural parameters.
- Solution: We provided the YGS180 model, total weight 6.3T, walking speed 2.5km/h, 85L diesel tank and shipping dimension 6600×2110×2500mm. It is equipped with a 55kw diesel engine, 90–146mm drilling diameter and a maximum 3.6m horizontal hole height, perfectly fitting slope anchor drilling on rugged mountain highways.
- Effect: The powerful engine greatly improves penetration efficiency in hard rock and cuts drill bit consumption. Stable crawler walking ensures safe transfer between scattered construction zones. The 3.6m horizontal height adapts perfectly to slope working conditions, finishing all anchor holes ahead of schedule and passing official engineering inspection smoothly.
- Customer Feedback: “This down the hole drilling rig offers great value for its DTH drilling machine price. It works steadily on our mountain highway slopes, efficiently drilling granite anchor holes. This reliable down hole drilling equipment will be our regular choice for future infrastructure projects.”
Case 2: Saudi Arabia – Open-Pit Quarry Blasting Drilling Project
- Customer Background: The Saudi buyer runs a local large quarry enterprise exploiting basalt for construction aggregates. Mass blast hole drilling under high-temperature desert conditions pushed him to purchase multiple YGS350 heavy-duty down the hole drilling rig.
- Difficulties:
- Long-time continuous operation in a hot desert required a large fuel capacity to reduce frequent refueling.
- Large-scale quarry needed a wide drilling diameter range to meet different blasting design requirements.
- Harsh dusty environment demanded heavy-duty, stable power configuration to avoid frequent breakdowns.
- Solution: We supplied YGS350 DTH drilling machine with a total weight of 8T, a 225L large-capacity fuel tank, dual walking speeds of 2km/h and 4km/h, 73.5kw high-power diesel engine, drilling diameter ranging from 90mm to 165mm and 3.5m maximum horizontal hole height. The reinforced structure adapts to high-temperature dusty desert working conditions.
- Effect: The large fuel tank supports all-day continuous drilling without frequent refueling. The wide drilling diameter range satisfies diverse blast hole demands, improving blasting efficiency and stone yield. Heat-resistant power parts effectively reduce equipment failure rate under desert high temperatures.
- Customer Feedback: “We are satisfied with this heavy-duty downhole drilling equipment. The large fuel tank and powerful engine suit our desert quarry perfectly. The reasonable dth drilling machine price brings us stable high production benefits.”
5 FAQs about YG Down Hole Drilling Equipment
A: All five models support drilling diameters roughly from 83mm up to 165mm, covering most blast hole and anchor hole construction needs.
A: This professional down hole drilling equipment is specially designed for hard rock such as granite, basalt and limestone. It is widely used for blast holes, anchor holes and water well drilling in mining and road projects.
A: Yes. The machine adopts integrated hydraulic control system with simple buttons. One operator can complete positioning, drilling and rod replacement after simple training, saving labor cost.
A: Yes. We provide global technical support, long-term warranty and complete supply of drill bits, hammers and other vulnerable parts, ensuring worry-free operation for overseas users.
A: Absolutely. We support dust removal system upgrade, power matching and structural reinforcement customization according to local geology and climate.
Purchase Call to Action
If you are looking for durable, high-efficiency down hole drilling equipment with competitive dth drilling machine price, YG industrial-grade down the hole drilling machine and down the hole drilling rig are your ideal choices. Suitable for highway construction, quarry mining and slope engineering, our equipment helps you reduce failure rate, improve productivity and maximize project profits! If you are interested, please contact YG for a discount.
