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
Integrates the heavy-duty DTH drilling system and an onboard two-stage screw compressor (17 m³/min @ 18 bar / 261 psi) onto a single crawler chassis. Powered by a 191 kW (260 HP) Yuchai YC6A260 engine, it eliminates trailing air hoses and slashes total jobsite fuel consumption by up to 30%.
Features an aerospace-grade aluminum alloy propulsion beam (3,590 mm advance stroke) providing high flexural rigidity and reduced front weight. The automated 7+1 rod handling carousel with automatic thread lubrication enables single-operator drilling down to 24 meters.
Equipped with an onboard hydraulically driven cyclonic laminar flow dust extraction system that eliminates silica dust at the hole collar. The heavy-duty 10,000 kg crawler chassis features 430 mm ground clearance, 0–4 km/h tramming, and ±10° frame leveling for stable 25° slope drilling.
| Parameter | KT7H Specification |
|---|---|
| Drilling hardness | f=6-20 |
| Drilling diameter | 105-146 mm |
| Depth of economical drilling | 24 m |
| Travelling speed | 0-4 km/h |
| Climbing capacity | ≤25° |
| Ground clearance | 430 mm |
| Power of complete machine | 191 kW / 2100 r/min |
| Diesel engine | Yuchai YC6A260-T301 |
| Screw compressor | Two stage compression 17 m³/min / 18 bar |
| Outer dimensions (L×W×H) | 8500×2400×2800 mm |
| Weight | 10000 kg |
| Rotation speed of gyrator | 0-90 r/min |
| 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 50°, left 58° |
| 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 onboard two-stage air capacity from 15 m³/min to 17 m³/min @ 18 bar, increases engine power from 176 kW to 191 kW (Yuchai YC6A260), boosts rotary torque from 1,560 N·m to 2,800 N·m, and expands maximum drilling diameter to 146 mm.
A: No. The KT7H is completely self-contained. The 191 kW Yuchai diesel engine powers the hydraulic drilling and tramming systems while directly driving the onboard 18-bar two-stage screw compressor, operating autonomously with zero trailing air 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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