Hydraulic dampers

HYDAC hydraulic dampers are specialised components for reducing pressure ripples and mechanical oscillations in hydraulic systems. By targetedly damping the pressure peaks that occur as a result of valves switching or pump piston strokes, they prevent material fatigue in pipelines and protect sensitive sensors from destructive pressure surges.

Damping solutions at a glance

Damper type	Functional advantage	Main application area
Pulsation damper	Compensation of flow rate fluctuations via the gas volume, in particular higher-frequency pressure vibrations	Displacement pumps (e.g. metering pumps), cleaning systems
Suction flow stabiliser	Avoids cavitation of the pump, pipe vibrations and improves NPSH values	Supply systems (piston and diaphragm pumps)
Shock absorber	Absorbs extreme pressure spikes during fast switching operations	Loading stations, emergency locking systems
Silencer (fluid silencer)	Maximum noise reduction thanks to flow optimisation	Mobile machines (e.g. gear pumps in construction machines), hybrid drives to reduce hydraulic noise

Acoustic optimisation and extended service life

In addition to mechanical protection, noise reduction (NVH – noise, vibration, harshness) is a key advantage. HYDAC hydraulic dampers significantly reduce the noise caused by pulsations, which improves work ergonomics and meets legal noise protection requirements. The smoothing of flow also reduces the risk of cavitation in the suction line and stabilises the efficiency of control pumps. This leads to a measurable increase in the maintenance intervals of seals and valve seats and improves pump performance in the long term.

Integration into smart hydraulic systems

HYDAC offers solutions that go beyond pure damping. Our hydraulic dampers can be equipped with integrated sensors to monitor the damping level as part of condition monitoring. The compact design allows placement directly at the source of the vibration – ideally directly behind the pump or in front of fast-switching valves. Thanks to the wide range of materials for accumulator shell and elastomer qualities, our dampers can be used reliably even in adverse environments or with extreme temperature fluctuations. HYDAC also offers a special feature for applications with material-attacking substances: fully plastic shock absorbers designed specifically for use in extremely aggressive media.