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Pilot operated hydraulic system


Deeper and larger exploration holes with new Sandvik rigs

Sandvik is expanding its range of exploration drill rigs with its new DE 150 underground core drill. It has also announced a new modular Drill Shack which will ease drilling operator comfort in extreme conditions.

Author: John Chadwick
Posted:  Thursday , 02 Apr 2009 


The Sandvik DE100 range of exploration drill rigs is being expanded and the company says its new DE150 is its “most powerful exploration drill rig for underground exploration yet”. A surface version is under development and will be ready for market fourth quarter 2009.  The DE100-series drills are made to handle all types of drilling conditions within the scope of modern core drilling. The series include drills with capacities for deep hole drilling, as well as short-hole drilling, for production control. Drills for special applications can be customized, based on customer’s needs. Additional equipment like water pumps, wireline equipment, and a range of power pack alternatives are available for different applications.

The DE150 is powered by a hydraulic motor producing torque of 2,000 Nm at 485 rpm.” A hydraulic feed cylinder design gives a push and pull capacity of 15 t (147 kN) and depth capacity is up to 2,000 m (NQ rods). In underground applications the DE150 is powered by a 110 kW electric power unit giving a maximum working pressure of 250 bar and oil flow of 300 litres/min For surface application the DE150 can be powered by a diesel engine.

The DE150 shares many of the components used by other drill rigs in Sandvik’s DE100-series. The drill unit features a stiff and torsion resistant steel profile feed boom and a direct coupled feed cylinder with a feed length of 1,700 mm and feed speed of max 0.63 m/s. The feed boom is mounted on a frame with tilt cylinder and mechanical supports. The mounting frame has been specifically designed for quick and easy set-up when fan drilling with a full range of adjustment from vertical down to vertical up. The DE150 offers exceptional push and pull capacity relative to its weight and size and is also available in steel for environments requiring explosion proof drill units.

Sandvik’s DE150 Torque control is said to enable optimal balance for torque and rotation speed. The control panel is a pilot operated hydraulic system which gives the operator central control of all drilling operations including flush pumps, wireline hoist and boom tilt. The system also controls hydraulic system pressure, feeding force, hold back pressure, water pressure and water flow.



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