LM.SV Vibration-damping levelling feet

Technical data

The maximum static permanent load value reported in the table represents the limit that the damping element can withstand permanently. It equals a thrust on the area by 0.4 N/mm², at which the damping material reaches its optimum dynamic damping ability.

The table shows also the values (l₂) of elastic deformation with a load of max 0.6 N/mm² in case of a dynamic load.

When using LM.SV levelling elements properly, the following differentiation in vibration absorption must be considered:

• active vibrations: vibrations transmitted to surroundings or associated equipment (table, basement, ...) by working machinery.

• passive vibrations: vibrations transmitted to equipment or parts by vibrating surroundings or bases.

The efficiency of vibration absorption depends on the interference frequency of the vibration to be absorbed as well as on the resonant frequency of the damping element itself.

A vibration absorbing effect is only achieved when the interference frequency is greater than √2 fold the resonant frequency of the damping element.

The greater difference ( Δ ) between the two, the better is the damping effect. The resonant frequency of the damping element depends on the type (composition) of the material, on its geometry and on the static load.

The graphs show all data of PUR elastomer (SV12) of the damping element. Damping materials with other absorption properties are available on request.