Variable displacement open circuit pump w/ gear motor (reversing HIC)

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A wide range of fan drive systems

Danfoss offers a wide range of efficient fan drive systems. Below are the benefits and critical considerations you need to take into account as you determine the right system for your specific needs.

Benefits

Increased efficiency due to variable flow 

Low mass and small dimensions of gear motor

Fan speed independent of engine speed

Fails to full fan speed

Critical considerations

Additional cost, pressure drop and designed space for directional control valve 

Back pressure required for axial piston motors

No ZERO speed capability

Larger reservoir capacity for high flows depending on duty cycle

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