JK1300 Hard Rock Water Well Drilling Rig 300m Depth DTH Hammer Tricone Bits Basalt Granite Drilling Machine

Standard water well rigs struggle in hard rock. Regular roller bits wear out fast on basalt or granite and you end up spending more time changing bits than drilling. This JK1300 comes set up for hard formations.

What makes it different:

• DTH (Down The Hole) hammer system - hammer goes down behind the bit, hits close range. Way more effective than top hammer in deep holes
• High pressure air compressor included - 25 bar, enough to drive DTH hammer at 300m
• Tricone bit set - 6 bits covering different rock hardness from medium limestone to hard granite
• Button bit set for DTH hammer - these do the actual rock breaking
• Reinforced drill pipes - thicker wall 89mm, handles DTH hammer shock better

Rest of the rig is standard JK1300. BW850 mud pump included since you still use mud drilling in softer sections, switch to DTH when hitting hard rock.

Customer in Ethiopia using this through volcanic basalt getting 8-10m per hour where the old rig was doing 2-3m. Makes a real difference on the bottom line.