Designed to endure
demanding environments

Hydraulic impact hammers

DF550G AND DF560G

Doofor 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. The cast iron body is light and rigid. The four bolt connections in the front makes the impact hammer easy to install.

Doofor DF550G and DF560G hydraulic impact hammers
 Technical Data – DF550G
 Metric
 Percussion power  17 kW
 Percussion pressure  160 bar
 (oil flow)  (95-120 litres/min)
 Piston weight  5,0kg
 Weight  88 kg

 

 
17 / 20 kW
Power class
 Technical Data – DF560G
 Metric
 Percussion power  20 kW
 Percussion pressure  150 bar
 (oil flow)  (95-120 litres/min)
 Piston weight  5,0kg
 Weight  88 kg