Rubber Pad for vibration isolation of industrial systems

Theoretically vibration is defined as a periodic motion of particles of an elastic body or medium in alternately opposite directions from the position of equilibrium when that equilibrium has been disturbed. However, it can be better explained when bifurcated in three basic elements as below;

  • Source: A mechanical or fluid disturbance, generated internally by the machine, such as unbalance, torque pulsations, gear tooth meshing, shaft movements, cylinders, pistons, fan blade passing, etc. These typically occur in all industrial machineries operated under normal or optimum speed
  • Path: The structural or airborne path by which the disturbance is transmitted to the receiver. It is the medium which can be made of any composites which transmits vibrational energy from source directly to the receiver. Usually path is a connecting member either attached to the source and receiver or it can be air medium. It is the capability of path which defines the frequency at which vibrational energy is prevailing in system.
  • Receiver:  It is the responding system, generally having many natural frequencies which can potentially be excited by vibration frequencies generated from the source. It is the element which is severely affected by the vibrational energy generated from source. In case of industrial machineries, it is the tool which acts as a receiver which is most affected and leads to reduced life of machineries.

Anti-vibrational Rubber pads act as a path that dampens and absorbs all the vibrational energy from source thus isolating receiver. The role of the rubber pad is to isolate the source and receiver ensuring there is zero transfer of vibrational energy.  This in turn limits the efficiency loss and wear tear of components due to heavy vibrational force. The molecular structure of Rubber pads enables it to absorbs high frequency vibrational energy, thus isolating the system from vibration impacting the life of the system. Construction and geometry of Rubber pads are specifically designed as per the application and type of industry in which it needs to be installed.

These rubber pads or vibration absorbers are widely used across several industries in various machines and equipment’s. They are typically used in refrigerators where it absorbs the vibration generated from compressors, washing machines where it isolates the vibrational energy from rotating high-speed motor, ensuring no damage or wear and tear of functional components. They are also used in heavy industrial machineries where it separates the vibrations generated from source to ground on which it is mounted. Rubber pads are very simple in construction yet very effective in functionality.

The Functionality and application governs the mounting mechanism in between source and receiver. In some cases, it is mounted through clamping systems like bolts and heavy-duty fasteners, whereas in some cases it is simply stuck by means of adhesive. In addition to it, cross section and polymer construction is solely dependent upon the application of anti-vibration rubber pads. Higher the vibrational energy, the more complex is the structure and molecular construction. Whereas lower the vibrations frequency, the more simpler structure of rubber pad is used for the system. Rubber pads are best as it ensures very easy placement / fixing and also an equipment that helps improve life of machineries at an extremely low cost.


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