BASE LS.VA
BASE LS.VA
Bases for vibration-damping levelling feet
Technopolymer, PUR damping element
Technopolymer, PUR damping element

78711-R,20
78710-R,10
78712-R,50
orGN 300-30-B5-SW;60
GN 612-5-M12x1,5-A;40
DIN 172-B10,5-20-A;50
ISO 8675-M8x1-04-BT;10
Glass-fibre reinforced polyamide based (PA) technopolymer, black colour, matte finish.
Polyurethane-based rubber (PUR), natural colour, hardness 50 Shore A.
Have been designed to damp vibrations, shocks and noises produced by moving bodies or non-balanced vibrating masses of equipment and machines which can cause:
The maximum static load value shown in the table indicates the static load for a specific load of 0.4 N/mm2 to which the damping element can be subjected in order to have optimal vibration absorption.
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.
The effectiveness of the damping depends on the ratio between the disturbance frequency of the machine and the natural frequency of the damping foot.
The natural frequency of the base depends on the material, the geometry, and the specific load [N/mm2] to which it is subjected.
The specific load is obtained by dividing the applied load by the support area of the damping element.
Once the specific load is known, the natural frequency of the foot can be obtained from the graph in figure 1.
The damping starts when the ratio between the disturbance frequency of the machine and the natural frequency of the damping foot is greater than √2. The greater the difference between the interference frequency of the machine and the natural frequency of the foot, the greater the damping (see figure 2).
Example:
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