JK930 Truck Mounted Water Well Drilling Rig, 300m Class We build the JK930 for water well work that happens away from paved roads. Compressor, mud pump, foam pump, mast and rod rack all ride on one 6X4 truck chassis. Your crew drives to the site, drops the outriggers, raises the mast and starts drilling. No lowboy, no crane, no second truck carrying an air compressor. The rig drills to 300 m with a 3.5 m feed stroke, so the string goes down in 3 m rod sections and the collar
