JK690 Integrated DTH Drilling Rig 3300Nm Rotary Torque 90-160mm Hole 21m Depth Atlas Copco 18.5m3 Compressor

This JK690 integrated DTH drilling rig combines a 3300 Nm maximum rotation torque with an Atlas Copco compressor delivering 18.5 m3/min at 20 bar, creating a balanced drilling package for 90-160 mm holes down to 21 meters. The high rotation torque is particularly valuable in fractured and blocky ground where the hammer can stall or bind, because the JK690 maintains rotation control that keeps the drill string moving. Power comes from a Weichai WP7G300E300 engine rated at 220 kW, a widely supported power unit that keeps service costs predictable. The onboard 6+1 rod carousel with 3 meter rods supports multi-pass drilling without manual handling on the drill deck.

• 3300Nm Rotation Torque: strong rotary power for difficult ground conditions and large hammers.
• Atlas Copco 18.5m3 Compressor: proven compressor brand with generous air delivery at 20 bar.
• 90-160mm Hole Range: flexible diameter coverage for quarry, mining, and water well applications.
• 21m Drilling Depth: multi-pass capability with 6+1 rod carousel and 3m rods.
• Weichai 220kW Engine: reliable power with economical fuel consumption and global parts support.
• Planetary Gearbox Feed: motor-driven chain feed with 12 kN feeding force for consistent pressure.

The JK690 serves a wide range of drilling jobs: production blasting in small and medium quarries, water well drilling, foundation holes, and geotechnical work. The high torque output makes it effective in mixed ground where soft layers alternate with hard rock, and the 21 meter depth capability covers most water well and exploration programs. For drilling contractors who take on varied work, the JK690's combination of hole diameter range, depth, and mobility makes it one of the most flexible integrated rigs in its class. The machine also performs well in karst and fractured limestone where rotation control is critical to keeping holes on line.

Factory acceptance testing includes torque verification, compressor output measurement, and a full drilling cycle with the rod carousel. The rig is prepared for export in a 40ft flat rack container or by RORO vessel, with all hydraulic hoses capped and vulnerable components protected. Documentation covers CE certification, engine compliance, maintenance schedules, and a spare parts catalog. Our team provides remote commissioning support and can arrange operator training either at the factory or at your project site.