Anti-vibration mountings

Anti-vibration mounts come in a number of different forms.

These most commonly used to reduce the vibration of a fan unit

To its foundations are:

• Rubber or neoprene in shear

• High deflection steel springs

Anti-vibration mountings

Figure 16.10 Rubber in shear anti-vibration mountings

Rubber in shear mounts are generally used for deflections up to about 12.5 mm. This means that their natural frequency is higher then spring mounts, which are to be preferred for units operating at relatively low rotational speeds. The latter also have the advantage of maintaining their linear stiffness over a wide range of operating conditions and are impervious to humid or oily environments.

Examples of the two types are shown in Figures 16.10 and 16.11.

Posted in Fans Ventilation A Practical Guide

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