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Damping Gas Springs

Partially Damped Springs

Gas spring damping is achieved by regulating the flow of gas and/or fluid through the valved design of the gas damper piston.  Commonly used compression gas springs, when mounted in a rod-down orientation, achieve maximum damping when the piston reaches the oil near the point of full extension.  This is shown in the animation to the right.  Referred to as the oil damping zone, it provides a cushioning affect to slow the mechanism as it reaches the fully deployed position.

Fully Damped Springs

If consistent damping is required over the entire stroke to achieve a controlled rate of extension or compression, Floating Piston gas spring are used.  Floating Piston gas springs are manufactured with separate fluid and gas chambers.  The piston always moves in the fluid chamber.  The two chambers are separated by a floating piston as shown in the animation below. 

The greater the tube diameter in relation to the rod diameter, the greater the volume of fluid passing through the piston orifice and consequently the greater the damping effect.

These principles apply to both compression and locking gas springs.  Varying levels of damping are also possible on tension springs, depending on the model used.

Damping can be provided in compression, extension or in both directions.

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