This CHI Pneumatic CP650 is a used vertical drill — a type of machine also commonly referred to as a drill rig — configured specifically for water well drilling. Chicago Pneumatic is a well-established manufacturer of pneumatic and drilling equipment, with a long history of supplying the mining, construction, and water well industries with heavy-duty machinery.
Built in 1981, this rig is truck-mounted on a 6x4 Crane Carrier powered by a Caterpillar CAT 3208 engine rated at 210 HP, making the entire assembly a self-contained, road-mobile drilling unit. The drill rig itself is driven by a Caterpillar CAT 3406 engine and is equipped with an onboard GHH twin-screw air compressor delivering 825 CFM at 350 PSI — a substantial air supply suited to demanding rotary or DTH drilling applications. An injection pump, identified as a Comet APS unit, provides fluid at 71 litres per minute at 580 PSI.
The rig is capable of drilling holes from 6 inches to 12 inches in diameter using 4½-inch rods, with a rated depth capacity of 500 metres. A 612 Banger casing driver handles casing sizes across the same 6-inch to 12-inch range. The top drive rotary head produces up to 76,000 lb-ft of torque across a speed range of 0 to 152 RPM, driven by twin Dynex motors, with a head travel of 7 metres. Feed is via 160-pitch chains at a rapid feed rate of 73 feet per minute, and the hoist rams are 5½-inch heavy units.
Pull-down force is rated at 21,000 lbs and pull-back at 55,000 lbs. A ½-inch extendable rod handling jib winch with a 7,000 lb capacity is included for rod management. Site levelling is handled by three hydraulic jacks: a single front jack with a 5-inch bore and 48-inch stroke, and two rear jacks each with a 5-inch bore and 36-inch stroke.
The machine is located in Queensland, Australia, and is offered in used condition.
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