Hard rock. Broken drill pipes. Shift after shift of slow penetration. You don’t need a bigger compressor – you need a dth drilling rig machine that puts the hammer where it belongs: down the hole.
You know the feeling. The drill steel bends. The bit bounces on the rock surface. Every metre takes forever, and your air compressor is running at full load the whole time. Then the hole goes crooked – or the steel gets stuck. You spend more time pulling rods than actually drilling. That is not your fault. That is the wrong drilling method for hard rock.
A portable dth drilling rig works completely differently. Instead of hitting the top of the drill string, the hammer goes directly down the hole, right behind the bit. Every blow hits the rock face – not the drill pipes. Result: straighter holes, faster penetration, and much less wear on your drill steel.
One quarry owner in South Africa told us: “With our old top‑hammer rig, we drilled 12 metres per hour in granite. With this dth drilling rig, we can drill to 22 metres. And our drill pipes last three times longer.”
Meet The Portable DTH Drilling Rig – Built For Hard Rock, Deep Holes, And Tough Jobsites
This dth drilling rig machine (also called a DTH crawler drill) is designed for quarrying, open‑pit mining, road construction, and water well drilling. It is a self‑propelled rig with its own diesel engine, hydraulic system, and air compressor – or it can use an external air source.
It is a self‑propelled rig with its own diesel engine, hydraulic system, and air compressor – or it can use an external air source. They drill holes from 83 mm up to 165 mm in diameter, with horizontal hole height up to 3.6 metres.
What Does The Down The Hole Drilling Rig Mean For Your Daily Work?
You don’t need to memorise every number. Just answer three simple questions:
- What hole diameter do I usually drill?
- How heavy can my transport truck carry?
- Do I need to move the rig often between benches?
Let me translate the main specs into plain English.
| Model | Total weight | Hole diameter | Max horizontal hole height | Diesel tank | Walking speed | Engine power |
| YGS100A | 5.95 T | 90–146 mm | 3.2 m | 85 L | 2.5 km/h | ~55 kW |
| YGS153 | 3.8 T | 83–130 mm | 2.8 m | 70 L | 2.5 km/h | 33 kW |
| YGS180 | 6.3 T | 90–146 mm | 3.6 m | 85 L | 2.5 km/h | 55 kW |
| YGS300 | 6.8 T | 90–152 mm | 3.25 m | 85 L | 2.2 / 3.8 km/h | ~80 kW |
| YGS350 | 8 T | 90–165 mm | 3.5 m | 225 L | 2 / 4 km/h | 73.5 kW |
What does this mean for you?
Light and compact (YGS153) – Perfect for small quarries, building foundations, or jobs with narrow roads. Only 3.8 tons, easy to tow.
All‑rounder (YGS100A and YGS180) – Most popular models. 90–146 mm holes meet 90% of blast-hole needs. 85L fuel tank keeps you drilling for a full shift.
High output (YGS300 and YGS350) – Larger hole diameter (up to 165 mm), bigger fuel tank (225L on the YGS350), and two‑speed travel. You can drill deeper blast holes and move faster between benches.
Three Reasons Why This Portable DTH Drilling Rig Saves You Money Every Shift
1. Less drill steel breakage
Because the hammer is down the hole, the drill pipes only transmit rotation and a little pull‑down force – not heavy impact energy.
👉 Result: Drill pipe life increases by 200–300%. One set of pipes lasts for months, not weeks.
2. Straighter holes, better blasting
A DTH hammer self‑centres in the hole. Deviation is much smaller than that of top‑hammer rigs.
👉 Result: No more “dog‑leg” holes. Your blast pattern works as designed – less overbreak, better fragmentation.
3. Works with your existing compressor
These rigs can run on an external air compressor (typical 15–25 m³/min at 10–20 bar) or use a built‑in engine to power the hydraulic system (the air still comes from a separate compressor). Most quarry owners already have a good compressor – you just add the portable dth drilling rig and start drilling.
Real Jobs – Real Results
Indonesia – A limestone quarry replaced an old top‑hammer rig with the YGS300. Their daily drilled metres went from 180 to 310. The mine manager said, “We now drill a full pattern in 6 hours instead of 10. That’s four extra hours for loading and hauling.”
Brazil – A small construction company bought the YGS153 for foundation anchor holes in basalt. The rig fit through a 2‑metre gate and drilled 15 m deep holes with no deviation. They finished the job two weeks ahead of schedule.
Morocco – A phosphate mine added the YGS350 for pre‑splitting holes. The 225L fuel tank allowed two full shifts of drilling without refuelling. Their maintenance supervisor reported: “In one year, we changed only two drill pipes. On our old rig, it was ten pipes.”
These are not special cases. Any portable dth drilling rig that puts the hammer at the bit will outperform a top‑hammer in hard rock – by a large margin.
One Final Truth For Mine And Quarry Owners
Drilling is the first step in your entire production cycle. Every minute saved on drilling adds directly to your bottom line.
A dth drilling rig machine gives you:
- Faster penetration in hard rock
- Much longer drill pipe life (2‑3x)
- Straighter holes – better blasting – less secondary breaking
Over one year, the savings in drill steel, fuel, and labour alone often exceed the purchase price of the rig.
👉 Ready to stop struggling with slow, crooked holes?
Fill out the form below or email us at admin@chinayugongmachinery.com. Tell us your rock type, required hole diameter, and typical depth. We will reply within 24 hours with a model recommendation, drilling cost comparison, and a site demo offer.