Integrated Surface DTH Drilling Rig, KT7C
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Down-the-hole drill rig for open-pit mining
This machine integrates a hydraulic long hole drilling rig and a screw air compressor. The compressor consists of a single-stage high-pressure air end that delivers 13,000 L of air per minute at up to 246.5psi, which can provide energy to KT7C’s high-pressure down-the-hole hammer. Thanks to this, the rig drills rocks 20%-50% faster than those equipped with medium-pressure air compressor. The machine is powered by a Yuchai off-road engine that meets China Stage III emission standards. With so many distinctive features, the rig is easy to use and to be transported from site to site.
| Model | |
| Rock hardness | F=6-20 |
| Hole diameter | ⌀80-105mm |
| Hole depth | 25m |
| Tramming speed | 2.5/4.0km/h |
| Gradeability | 30° |
| Ground clearance | 430mm |
| Total power | 195kW |
| Diesel engine | Yuchai YC6A260-T30 |
| Free air delivery of compressor | 13m³/min |
| Discharge pressure of compressor | 238 psi |
| Dimensions | 8000 ×2300 ×3000mm |
| Total weight | 9600kg |
| Rotation speed | 0-120r/min |
| Maxium torque | 2.45kN.m |
| Maximum push force | 25kN |
| Boom lift angle | Up: 28°, Down: 42° |
| Tilt angle | 129° |
| Swing angle | Left: 38°, Right: 35° |
| Lateral horizontal swing angle | Right: 42-89° |
| Boom swing angle | Right: 39°, Left: 60° |
| Frame oscillation angle | Up: 10°, Down: 9° |
| Feed length | 3000mm |
| Feed extension | 900mm |
| DTH hammer | K30 |
| Rod diameter | ⌀64×3000mm |
| Dust collector | Dry (hydraulic cyclonic laminar flow) |
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