JK930 Truck Mounted DTH Drilling Rig 300m Depth 350mm Hole Hard Rock Rig

JK930 DTH Rig for Rock That Fights Back

When the bit is in granite from the first metre, the outcome depends on air volume, hammer size and head gearing, not on the badge on the truck. The JK930 hard rock configuration sizes the compressor to the hammer you name, so the tool does not bog down halfway down the hole.

Air and hammer package

• 17-35 m3/min at up to 2.5 MPa, matched to 4, 5 or 6 inch hammers.
• Hole range 138-350 mm: blast holes, water wells and 300 mm foundation holes.
• 300 m depth with 3 m rods handled on a hydraulic rack.
• 25 t pullback and 8,000-10,000 N.m torque to free a loaded string.

Mobility that changes the schedule

Everything rides on a road legal 6X4 chassis: compressor, mast, rod rack and controls. When your sites sit 60 km apart, the rig drives itself instead of waiting for a crawler transporter.

Practical figures

Penetration runs roughly 0.5-1.0 m per minute in limestone and 0.2-0.5 m per minute in granite. Packed on flat rack or shipped Ro-Ro with anti-rust coating and tools in plywood cases.

Choosing this or the water well version

If the ground is soil and clay most of the way, order the water well configuration. If the bit meets rock immediately, this is the machine.