We build Drilling Equipment For Excavation that works hard. Our 7.5ton Down-The-Hole Drilling Rig is made for mining, quarrying and big blasting jobs.
It’s tough. It handles rough conditions – hard rocks, hot or cold weather, you name it. This Hydraulic Dth Drilling Rig balances speed, precision and durability. It gets the job done without constant breakdowns.
Technical Specs
- Weight: 7.5 ton
- Engine: 75 kW diesel
- Drill Size: 80-200 mm
- Max Depth: 25 meters
- Hydraulic Pressure: 210 bar
- Compressor: 10 m³/min
- Fuel Tank: 150 liters
- Size (L×W×H): 5800×2200×2800 mm
- Drill Speed: 0-60 rpm
- Tracks: 450 mm wide, rubber
- Mast Tilt: 0-90°
Features & Why It's Better
What Makes This Rig Stand Out
- Smart Hydraulics: This Hydraulic Dth Drilling Rig has two separate hydraulic systems. One controls spinning, one controls hammering. It wastes 15% less energy than old models and stays steady while drilling.
- Tough Build: The main frame and drill mast use Q345 high-strength steel. It’s strong enough to handle heavy vibration when drilling hard rock. Lasts 30% longer than weaker rigs.
- Easy Controls: Digital panel shows real-time info – how deep you’ve drilled, spin speed, pressure. It shuts down if things get too heavy, so you won’t break it.
- Comfortable Cabin: It’s quiet inside, with AC. The seat adjusts, and you can see all around. Operators don’t get as tired, even after 8+ hours.
- Less Dust: Built-in water mist system cuts down 90% of dust. For dry areas, we can add a dry dust collector. Meets OSHA and EU dust rules.
Why Choose Ours Over Others
- Drills 20% faster in granite (at least 8 meters an hour). We matched the hammer and air pressure perfectly.
- Uses 10% less fuel (only 28-32 liters an hour). You service it every 250 hours, so less downtime.
- Parts are standard – drill head, hydraulic pump, etc. Swap them out in under 2 hours. No long waits for repairs.
- Works in -15°C to 45°C. Add a cold-weather package for below -15°C, or a hot-weather package for over 45°C.
How to Use It
- Check Before You Start )
- The control panel has gauges for this.
- Check the drill bits. If the edge is worn 3mm or more, replace it. Make sure there are no cracks.
- Test safety stuff: emergency stop button, track brakes, mast lock.
- Clear the area. Move obstacles 5 meters away. Make sure no one’s in the blasting zone.
- Get in Position & Level
- Drive to the spot with the tracks. Avoid soft ground – use steel plates if needed.
- Level it: adjust the legs until the rig is flat. Check the bubble level on the cabin dash.
- Line up the drill mast with the marked hole. Use the laser in the cabin for accuracy.
- Set Up Drilling Settings
- Pick the right bit: tungsten carbide for hard rock (80+ MPa), diamond for super hard rock.
- Keeps dust down and makes the hammer work right.
- Start Drilling
- Lower the mast slowly until the bit touches the rock. Don’t drop it – you’ll damage the bit.
- Start spinning first, then the hammer. Keep steady pressure: 0.8-1.2 kN for hard rock.
- Watch the panel. Stop right away if pressure goes over 210 bar or temp over 65°C.
- Finish Up & Clean
- When you hit the target depth: stop the hammer first, then spinning. Pull the bit out slowly.
- Raise the mast to transport position (less than 30° tilt) and lock it.
- Blow off the bit and mast with high-pressure air. Check for oil leaks in the hydraulic system.
- Write down what you did: depth, time, fuel used. Helps with maintenance later.
Where It Works
Our Down-The-Hole Drilling Rig is made for blasting jobs in many industries. It solves big problems with speed and accuracy:
- Mining: Great for pre-blasting in coal, iron ore and gold mines. Makes even blast holes (80-200mm) so rocks break evenly. Cuts ore loss by 8%.
- Quarries: Used in limestone, granite and marble quarries. Drills holes up to 25 meters deep for big blocks. Gets 12% more good blocks.
- Building Roads & Dams: Needed for highway expansions, railway tunnels and dam building. Preps blast holes to clear rock in mountains.
- Demolition: Good for taking down old factories, bridges and rock formations. Puts holes exactly where needed for safe, controlled collapse.
- Geothermal Work: Works for shallow geothermal wells (10-20 meters). We can add corrosion-resistant bits for salty soil.
What You Get Out Of It
- Faster Jobs: Drills 20% faster. A 10,000 m² quarry finishes monthly blasting 5 days earlier. That’s 15% more output a year.
- Spend Less: Uses 10% less fuel. Parts last 30% longer.
- Less Labor: The smart controls make it easy. One person can run it. Cuts labor costs by 50% vs. manual drilling.
- Holds Value: Our tough build means it keeps 40% of its value after 5 years. The market average is 30%.
Certifications & Safety
Our Drilling Equipment For Excavation meets global standards. It works in projects worldwide:
- SGS Certified – Ran for 1,000 hours straight in tough conditions. Proves it’s reliable.
- OSHA 1926.602 – Meets U.S. safety rules for construction drilling.
- Australian AS/NZS 4024 – Approved for mining and building in Australia.
We Can Customize It
Your job might need something specific. We can adjust the rig for you. Takes 15-30 days:
- Drill Bits: Diamond bits for super hard rock, carbide-tipped for rough rock.
- Better Controls: Add GPS to map hole locations (good for big mines). Or remote control for dangerous areas.
- Easier Transport: Foldable mast (lowers to 2.5m) for countries with strict height limits on roads.
- Your Brand: Custom paint colors and logo. Makes your fleet look uniform.
How We Build It & Check Quality
Our 7.5ton rig goes through 6 strict steps. We check 120+ things to make sure it’s good:
- Pick Good Materials: We get Q345 steel (for the frame) and Bosch hydraulic pumps from trusted suppliers. Every batch of steel is tested for strength.
- Precision Building: CNC machines cut steel parts (error under 0.5mm). Robots weld the drill mast (98% of the weld sticks) so it won’t crack when vibrating.
- Put It Together: Skilled workers assemble the hydraulic system, engine and tracks in a clean shop. Every connection is tightened to 50-100 N·m.
- Calibrate Systems: We set hydraulic pressure, spin speed and hammer force with pro tools (like HBM pressure sensors). Makes sure it works like it should.
- Test It Hard: Runs for 100 hours straight, drilling hard rock. We check for leaks, overheating and if settings stay right. If it fails, we fix it until it passes.
- Final Check & Pack: Look over the paint and parts. Check papers (certifications, manual). Wrap it to keep water out for shipping.
What Customers Say
"We’ve used ANNENG’s Hydraulic Dth Drilling Rig in our iron ore mine for 2 years. It’s 20% faster than our old one and uses 15% less fuel. Parts are easy to swap – takes 1 hour to change a drill head. We’re making 18% more ore a year!"
— Michael Chen, Mining Operations Manager, Western Australia Iron Ore Co.
"We run a granite quarry in Spain. We needed a rig that could handle hard rock and meet EU safety rules. ANNENG’s 7.5ton rig has CE certification and drills 10 meters an hour in granite. The dust system keeps our workers healthy, and support responds in 24 hours."
— Carlos Ruiz, Quarry Owner, Madrid Granite Group
"We bought 3 ANNENG Down The Hole Drilling Machines for our highway project in Nigeria. They work great in 40°C heat, and the tracks don’t damage roads. The GPS upgrade helped us drill 500+ holes right where we needed them. Finished a month early."
— James Okonkwo, Construction Contractor, Lagos Infrastructure Ltd.
Common Questions
How often does it need maintenance?
Regular check: Every 250 hours.
How long do drill bits last? Where do I get new ones?
We sell replacement bits – ship to major ports in 3-5 days. We can also tell you about local distributors near you.
Do you train operators? What about after-sales help?
Yes. We do 3-day on-site training: how to run it, maintain it, fix small problems. Warranty: 12 months on the main machine (parts and labor). We offer 24/7 phone/email support. For big issues, we send a tech to your site within 72 hours (in major regions).
How long to get a rig? Custom ones?
Standard rigs: 7-10 days.
Does it work with different DTH hammer brands?
Yes. It fits major brands (like Atlas Copco, Sandvik) with 3-inch to 6-inch connections. Our techs can check if it works with your current hammers before you buy.
What payment options for international orders?
We take T/T (30% upfront, 70% before shipping), L/C at sight (for orders over $100,000), and Western Union (for samples). We can talk about flexible terms if we work together long-term.
Jiangsu Aneng Drilling Equipment Technology Co., Ltd.
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