Schramm introduced the new model T685EX to the exploration drill rig product line.

The Schramm T685EX is a drill rig designed specifically for mineral exploration.  Its features include a high-capacity top head, sampling equipment, power breakout and automated pipe handling systems. The T685EX is available in both track and truck mounting and in hoist packages ranging from 40,000 pounds to 90,000 pounds.

The T685EX features increased engine horsepower and compressor capacity and is equipped with a V-Pack cooling system for increased efficiency. The MTU 12V-2000, 905 horsepower engine powers all hydraulic systems and the Sullair compressor, producing 1,350 cfm at 500 psi. A mechanical clutch disengages the air compressor to facilitate a cold engine start and to conserve power and fuel when the compressor is not required. The compressor package also includes Schramm’s patented air-CONTROL System, which monitors cooling-system temperature and compressor volume requirements. For added safety, galvanized steel hose whip socks are fitted to all 2-inch and larger hoses containing air, including the cuttings discharge hose.

The drive is designed to provide drilling speed and torque characteristics required for tri-cone rotary bits or down-the-hole hammers. Low speed, high torque hydraulic motors provide a wide torque and speed range at high overall mechanical efficiency levels while large, tapered roller bearings mounted in heavy fabricated steel housing handle spindle thrust forces.

The tracked carrier system’s features an accessible tramming station, an adjustable height seat, a radio remote tramming control and a back-up manual hydraulic tramming system. A Caterpillar 330C carrier is hydraulically driven with two-speed, axial piston-type motors, spring applied parking brakes, 29.5-inch triple-cleated grousers and full-length rock guards.


A variety of automated pipe-handling systems are available to provide hands-free loading and unloading of drill rods directly to the top head. A hands-free, full breakout and make-up system eliminates the need for conventional wrenches or tongs. A hydraulic sliding holding wrench supports the drill rods in the table while a lightweight hinge-mounted guard prevents contact with the rotating drill string. The package also includes an exploration jib boom and auxiliary and sandline winches.

The T685EX is factory-equipped with side-inlet and discharge swivels, abrasion resistant discharge hose and plumbing, a swing-arm mounted cyclone and a wet splitter. Assorted water and foam injection packages are available and can be combined with on-board water tanks and mist-type dust suppression systems.