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 a heavy-duty two-stage rotary screw compressor delivering 15 m³/min at 18 bar (261 psi). Driven by a single 176 kW (240 HP) Yuchai YCA07240 engine, it eliminates trailing air supply hoses and cuts overall fuel consumption by up to 30%.
Enhanced hydraulic rotation unit provides 2,500 N·m maximum torque at 0–110 rpm and 22,000 N feed force. Easily penetrates tough rock formations (f=6–20) for ⌀90–135 mm blast holes down to an economical depth of 25 meters.
Features an extended 3,590 mm advance stroke and a unique dual-hinge carriage swing (Hinge 1: Right 36°/Left 40°; Hinge 2: Right 2°/Left 92°), offering exceptional boom reach for vertical, horizontal, and perimeter pre-split drilling.
Equipped with dual-speed travel motors (2.5 / 4.0 km/h), 330 mm ground clearance, and ±10° hydraulic frame leveling. An onboard hydraulic cyclonic laminar flow dust collector captures silica dust directly at the hole collar.
| Parameter | KT7C Specification |
|---|---|
| Drilling hardness | f=6-20 |
| Drilling diameter | 90-135 mm |
| Depth of economical drilling | 25 m |
| Travelling speed | 2.5/4.0 km/h (Dual speed switching) |
| Climbing capacity | ≤25° |
| Ground clearance | 330 mm |
| Power of the complete machine | 176 kW / 2200r/min |
| Diesel engine | Yuchai YCA07240-T300 |
| Screw compressor | Two stage compression 15 m³/min / 18 bar |
| Outer dimensions (L×W×H) | 8000×2350×2700 mm |
| Weight | 8700 kg |
| Rotation speed of gyrator | 0-110 r/min |
| Rotary torque (Max) | 2500 N·m (Max) |
| Maximum push-pull force | 22000 N |
| Lifting angle of drill boom | Up 60°, down 30° |
| Tilt angle of beam | 130° |
| Swing angle of carriage | Hinge Point 1: Right 36°, Left 40° / Hinge Point 2: Right 2°, Left 92° |
| Swing angle of drill boom | Right 40°, left 40° |
| 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 |
| Method of dust collection | Dry type (hydraulic cyclonic laminar flow) |
A: The KT7C upgrades engine output to 176 kW (from 162 kW), increases rotary torque to 2,500 N·m (from 2,000 N·m), expands drilling diameter up to 135 mm and depth to 25 meters, lengthens feed stroke to 3,590 mm, and introduces a dual-hinge articulated carriage for wider hole pattern coverage.
A: No. The KT7C is a completely self-contained integrated drilling rig. Its 176 kW Yuchai diesel engine powers the hydraulic drilling systems and directly drives the onboard 18-bar, two-stage screw air compressor (15 m³/min), eliminating the need to tow separate compressor units.
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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.
© 2026 Zhejiang Bili Machinery Co., Ltd. All rights reserved. A Kaishan Group Integrated Export Division.
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