Official Export Subsidiary of Kaishan Group (Est. 1956) | Quzhou Manufacturing Base
Our Quzhou engineering desk calculates the exact borehole diameter, rock hardness, and necessary CFM/Bar ratio for your project.
Category Showcase
Kaishan DTH Drilling Rigs
Heavy-duty surface crawlers and integrated rigs for open-pit mining, quarry blasting, and slope stabilization. High penetration rate and anti-jamming hydraulic system.
EQUIPMENT CATEGORIES
Combines the heavy DTH drilling system and an onboard two-stage screw compressor (18 m³/min @ 20 bar / 290 psi) onto a single crawler chassis. Powered by a 206 kW (280 HP) Yuchai YCA08280 diesel engine, it eliminates trailing air hoses and cuts jobsite fuel burn by up to 30%.
Features an aerospace-grade aluminum alloy propulsion beam (3,590 mm advance stroke) with exceptional anti-torsion rigidity. The automated 7+1 rod carousel, hydraulic breakout cylinder, and automatic thread lubrication module allow single-operator drilling down to 24 meters.
Equipped with an onboard hydraulic cyclonic laminar flow dust extraction system to capture silica dust at the borehole collar. The 11,000 kg heavy-duty chassis features 430 mm ground clearance and ±10° hydraulic frame leveling for stable tramming across 25° quarry slopes.
*Note: Due to continuous technical updates and improvements, any differences between parameters/configurations and actual products are subject to the delivered machine; additionally, machines shown in images may include optional equipment.
| Parameter | KT7H+ Specification |
|---|---|
| Drilling hardness | f=6-20 |
| Drilling diameter | 90-146 mm |
| Depth of economical drilling | 24 m |
| Travelling speed | 0-3 km/h |
| Climbing capacity | ≤25° |
| Ground clearance | 430 mm |
| Power of complete machine | 206 kW |
| Diesel engine | Yuchai YCA08280-T301 |
| Screw compressor | Two stage compression 18 m³/min / 20 bar |
| Outer dimensions (L×W×H) | 8200×2400×2800 mm |
| Weight | 11000 kg |
| Rotation speed of gyrator | 0-90 r/min (305 motor) |
| Rotary torque (Max) | 2800 N·m (Max) |
| Maximum push-pull force | 22000 N |
| Lifting angle of drill boom | Up 48°, down 16° |
| Tilt angle of beam | 147° |
| Swing angle of carriage | Right 53°, left 52° |
| Swing angle of drill boom | Right 58°, left 50° |
| Leveling angle of frame | Up 10°, down 10° |
| One-time advance length | 3590 mm |
| Compensation length | 900 mm |
| DTH hammer | 3", 4" |
| Drilling rod | Φ64/76×3000 mm |
| Number of rods | 7+1 |
| Method of dust collection | Dry type (hydraulic cyclonic laminar flow) |
| Method of extension rod | Automatic unloading rod |
| Method of drilling rod lubrication | Automatic oil injection and lubrication |
A: The KT7H+ upgrades the onboard two-stage screw compressor to 18 m³/min @ 20 bar (versus 15 m³/min @ 18 bar on KT7D), expands engine power to 206 kW (versus 176 kW), increases rotary torque to 2,800 N·m, expands maximum hole diameter to 146 mm, and increases operating machine weight to 11,000 kg for superior stability.
A: No. The KT7H+ is completely self-contained. The 206 kW Yuchai diesel engine powers the hydraulic drilling and tramming systems while directly driving the onboard 20-bar two-stage screw air compressor, operating autonomously with zero trailing hoses.
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Founded in 2022 in Quzhou City, Zhejiang Province. Operating as the global integrated export arm of Kaishan Group, delivering heavy-duty DTH drill rigs, water well exploration machinery, and screw air compressors worldwide.
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