Designed to endure
demanding environments


Doofor DF550G hydraulic impact hammer
Doofor DF560G hydraulic impact hammer


Hydraulic impact hammers

Doofor DF540G, DF550G and DF560G are high frequency hydraulic impact hammers designed for the use of geothermal and other rotation drilling rigs.

The impact hammers have a rapid function control valve with a large surface for a high percussion frequency and optimal shock wave control. The valve optimizes the power distributed by the piston so, that the impact hammer is capable of delivering a full blow force in all hitting points.

The Doofor impact hammers utilize the Doofor – developed trapezoid impact piston, which increases the movement of the impact pulse in the drill tool string. The two high pressure accumulators and low number of serviceable parts makes the impact hammers’ up time a long one.