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Vibration & Shock Control Solution

Viscous Fluid-Filled Damper

Watch The HBD System Damping Performance Test Video

Download Flash Payer Here.



  • High attenuation performance by enclosed viscose fluid:
      High damping performance in wide damping rage which cannot be achieved by no viscose   fluid filled dampers.
  • Performance retention in vibration condition and temperature shift environment and resistance to fracture :
      Proven results in high environmental burden such as automotive application.
  • Extensive customizability by taking advantage of hard resin made lid :
      Lid design can be customized to fit your assembly design.

Basic Structure

Design Variation

Bellows thermoplastic elastomer
(FES series)
thermoplastic elastomer
(FES series)
Butyl Rubber
(G -Polstar)
Shaft Pocket
thermoplastic elastomer
(FES series)
thermoplastic elastomer
+ Hard Resin or only Hard Resin
Butyl Rubber
(G -Polystar)
Hard Resin Lid
Hard Resin
(FPP Series)
Hard Resin
(FPP Series)
Hard Resin
(FPP Series)
* Click below for more detailed features of each variations.

How It Works

Viscous fluid-filled damper , typically called oil filled damper, has high damping characteristics.
A damper works as a dashpot.
In order to support load of antivibration part, spring to be used in parallel.
Input vibration energy to be decayed by transforming to thermal energy trough agitating the viscous fluid material.
As a result, the input vibration gets reduced on the antivibration part supported by the oil filled dampers .

Vibration Transmission

Typical Vibration Transmission Comparison

The above data shows that the viscous fluid-filled damper has very low resonance magnification.
f0 and Q value can be customized by damper design and material.

Basic Usage

  1. Fixing dampers
    Dampers to be fixed onto your vibration source unit. (housing or external parts)
  2. Inserting shaft
    Insert the shaft pin which comes from the antivibration part into the shaft retention pocket.
    (the shaft pins are required to assemble)

*It is also possible to set dampers on the antivibration part side and the shafts go on the vibration source side.

Development Flow

Upon receipt of your design information, we suggest the most optimized damper design by following the development flow. Contact Polymatech today for your complete application solutions.

Using finite element method (FEM), we simulate
・design limitation due to fixing space
・stress concentration at strokes
・spring constant
・shaft retaining force

Loading vibration transmission data into our own modified analysis software, the mode behavior can be evaluated by animation. It also enables us to evaluate different spec damper combination.

We welcome your any comments to our products and design engineering.
If you have any comments on our products, requests on product customization and design inquiries, please contact