KJ421 two-boom jumbo reaming holes cut hole underground drilling applications

KJ421 is a two-boom, electro-hydraulic mining development drill rig, engineered for fast and accurate drilling. This mining jumbo provides reliability of face drilling, cross-cut drilling and bolt-hole drilling in tunneling of 8-60-square-meter cross sections. Well-designed, structures and proven components ensure this mining jumbo a reliable workplace for both operators and maintenance crews. Optimised drilling control system will help to keep holes straight, reduce jammings and maximize the tool life consistently.

Quick Facts

» Drifter / rock drill: HC95SA, 20 kW,

» Feed 360-degree rollover and ±45° Swing,ideal for cross cutting and bolting,

» Hole diameter: 64 - 102 mm with HC95LM Rock Drill/Drifter,

» Coverage: 8 - 68 m2,

» Engine power: 93kw/2200rpm Cummins,

» Motor power:75 kw ABB*2.

Features

- heavy-duty boom with double tripod suspension for accurate hydraulic parallel holding in all directions,

- heavy-duty aluminium feed with high bending and torsional resistance for maximum durability,

- FOPS/ROPS-certified cabin/canopy offers increased safety for operators,

- Troubleshooting, fault finding and maintenance made easy,

- Spare part commonality across product family.

- Widest range of automatic drilling functions helps to achieve reduced overbreaking with maximised pull-out per blast

- Dual control option for tough and intensive multi-task usage -drill can be used for both ground support and standard face drilling purposes

Technical Specifications

With console type optional