gas spring

Dampers or “shocks” are devices that can restrict motion through viscous friction, usually paired with an external spring or moving masses such as doors and panels. Dampers generate an opposing force to motion which is directly proportional to velocity.

Dampers are specified by their stroke (distance travelled) and their constant of proportionality (c) between the forces generated the velocity travelled, expressed as Force/ velocity (N/m/s or Lbs/in/s). For example, to control the closing time of a door of mass “M” at the damper pivot point, using a damper stroke “S” at time “T”, a damper with c = M/S/T should be specified.

The constant of proportionality for a damper is controlled by its size (defining the fluid flow rate through the piston), the piston orifice size and oil viscosity, both defining the resistance levels to oil flow. For example, a damper with a small orifice will provide more resistance to oil flow through the piston, dissipating or absorbing kinetic energy of the system attached to it. Similarly, using more viscous (thicker) oil will have the same result.

IGS dampers utilize valved pistons that enable different damping settings for extension and compression strokes.

For customers unfamiliar with the use of dampers, our technical sales team can provide support in specifying the appropriate damper as well as optimum mounting points to address their needs.