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TRD-350 Top-drive Rotary-Percussive Water-Air Dual-Use Drill Rig
- Top-drive rotary percussive rig
- Mud & pneumatic drilling combo
- Hydraulic outrigger leveling system
- 600m NQ wireline coring
Premium Drilling Solution
TRD-350 Top-drive Rotary-Percussive Water-Air Dual-Use Drill Rig
⚡ TRD-350 — Integrated mechanical top-drive drilling rig for both water (mud) and air (DTH hammer) operations.
Overcomes low efficiency in hard rock / boulder formations with mud drilling and solves soil-layer DTH difficulties.
Ideal for water wells, geological exploration, and wireline coring (NQ up to 600m).
✨ Key Features
Hydraulic steel crawler tracks – strong off-road mobility
4 hydraulic square tube outriggers – easy leveling & cost-saving transport
Left rod rack & right footplate – ergonomic design
Auxiliary breakout cylinder – convenient rod loosening
Universal shaft direct drive oil pump – powerful climbing & moving
Automotive gearbox + hydraulic release bearing – smooth gear shift
Dual oil pump with flow combining/splitting – rapid power head lifting
Foldable auxiliary mast – handles two 3m air drill rods at once
📐 Technical Specifications
🔧 Drill Model
Model
TRD-350
⛏️ Drilling Capacity
Hole Diameter
75 – 350 mm
Mud Drilling Depth
530 m
Pneumatic Drilling Depth
350 m
NQ Wireline Coring
600 m
⚙️ Power System (Diesel Engine)
Engine Model
YN33
Rated Power
58 kW
Rated Speed
2400 r/min
🔁 Power Head
Rotary Speed
27 – 901 r/min
Max Torque
0 – 10,500 N·m
📈 Feed System
Lifting Force
120 kN
Thrust Force
85 kN
🪢 Winch
Mechanical Winch (single rope)
5.5 T
📏 Drill Rod
Rod Diameter
φ50 / φ60 / φ76 / φ89 mm
Rod Length
3000 mm
🐛 Crawler Chassis
Travel Speed
0 – 2 km/h
Climbing Ability
25° – 30°
📦 Machine Dimensions & Weight
Transport (L×W×H)
6300 × 2000 × 2600 mm
Working (L×W×H)
3800 × 2400 × 7600 mm
Machine Weight
6500 kg
💨 Matching Air Compressor
Total Air Consumption
16 – 35 m³/min
Working Air Pressure
10.5 – 24.6 bar
🌍 Working Formation & Method
Formation Suitability
Loose soil & bedrock (hardness F6 – F20)
Drilling Method
Top-drive mechanical rotary + hydraulic thrust, mud circulation or pneumatic DTH hammer
⚙️ Working Principle
Top-drive rotary percussive action – The TRD-350 utilizes a mechanical top-drive power head that delivers variable rotary speed (27–901 r/min) and high torque up to 10,500 N·m. Hydraulic thrust (85 kN) forces the drill string into formation, while the dual-purpose design enables either mud drilling (slurry circulation for chip removal in unconsolidated/rock layers) or air DTH hammer drilling (high-frequency percussive impact for hard rock, gravel, boulders).
For air drilling, compressed air (10.5–24.6 bar, 16–35 m³/min) drives the DTH hammer, delivering powerful blows to break rock. For water well or coring operations, mud circulation stabilizes the borehole and removes cuttings. The combination of hydraulic feed, variable speed, and dual circulation ensures rapid penetration across all formations (F6–20 hardness) and up to 600m NQ wireline coring depth.
❓ Frequently Asked Questions
🔸 What is the maximum drilling diameter and depth with mud drilling?
Based on TRD-350 specifications, maximum hole diameter reaches 350 mm. For mud drilling (water well / exploration), maximum depth is 530 meters; for pneumatic (air) DTH drilling max depth is 350 meters, and NQ wireline coring up to 600 meters.
🔸 Which formations can the TRD-350 handle efficiently?
Thanks to the water-air dual-use design, it works in loose soil, hard rock, gravel, and boulder layers. The specified working formation includes loose soil and bedrock with hardness F6–F20. It solves low efficiency of pure air hammer in soil and pure mud drilling in hard rock.
🔸 What air compressor is recommended for DTH hammer drilling?
Matching air compressor requirements: total air consumption 16–35 m³/min and working air pressure 10.5–24.6 bar. This ensures optimal performance for the pneumatic drilling mode (max depth 350m).
🔸 How does the foldable auxiliary mast improve operation?
The auxiliary mast allows handling two 3m air drill rods at once (total 6m per cycle), significantly reducing rod change time and increasing air drilling efficiency — especially useful in large diameter water wells.
🔸 What is the transport weight and dimensions?
Machine weight: 6500 kg. Transport dimensions: 6300×2000×2600 mm. Equipped with hydraulic outriggers and steel crawlers, it’s road-transportable and easy to set up on site.
🚀 Technical highlight: Dual oil pump flow combining/splitting tech + automotive gearbox delivers fast power head cycling, while the 0–10500 N·m torque covers large-diameter drilling.
* Technical data based on TRD-350 official spec sheet. Contact us for customized configuration.
