ELESA vibration-damping elements have been designed to damp vibrations, shocks and noises produced by moving bodies or vibrating masses which can cause:

- malfunctioning and reduction of the machine lifespan
– noise
– damage to operator’s health.

They are supplied in a number of different mounting configurations in steel and stainless steel and are produced in natural rubber NR with hardness 55 shore A with options of 40 shore A and 70 shore A on request.

When selecting the correct vibration damping element certain basic data is required:

- disturbing frequency: In general, it coincides with the number of rotations of the engine [rpm]
– the static load applied to every single vibration-damping element [N]
– the isolation degree required [%]
– assembly style required

For every type of vibration-damping element and for every size, maximum static load [N], maximum static deflection [mm] and load/deflection are given in relevant dimension tables within product or internet catalogues. For DVA.6 and DVA.7 styles there is a non linear relationship which is shown in graphic 2 below.

How to choose the vibration-damping element:

Refer to graphic 1, intersect the disturbing frequency value with the isolation degree required (each isolation degree corresponds to a line on the graph) and define the deflection (static deflection mm)

Then refer to dimension tables (for DVA.6 and DVA.7 see graph 2) for the assembly style required and select the item that under the given static load [N], gives the static deflection [mm] calculated above.

Example:

Application with the following features:

- 3000 rpm disturbing frequency
– static load applied on each vibration-damping element 60N
– 90% isolation required
– assembly required type DVA.1

Graphic 1 shows that with a 3000 rpm disturbing frequency and an isolation degree of 90%, the deflection obtained is 1.0mm.

Then the required assembly style can be selected that has 1.0mm deflection with a static load of 60N.