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AIR SPRINGS
(RUBBER/MEMBRANE AIR SPRINGS)

Highly effective isolation of vibrations and structure-borne noise for a wide variety of machine models, optical and electronic devices, laser systems as well as vehicle, engine and transmission test benches.

The use of Bilz air spring isolators with active level control constantly maintains the correct level of machines or foundations. The level control and adjustment is entirely automatic.

The pressure in the air springs is appropriately adjusted by pressurising or venting in response to load changes. This keeps the isolating effect constant in all events.

Unlike steel springs air springs do not transmit structure-borne sound.

RUBBER AIR SPRING ISOLATORS

for highly effective shock and vibration isolation

  • FAEBI® rubber air springs are used for the highly effective isolation of machines, apparatus and aggregates from shocks, vibrations and structure-borne noise.
  • The element comprises of a bellshaped rubber form made from high-grade elastomer.
  • The constructive design enables highly effective vibration isolation without the disadvantage of high horizontal deflection.
  • Overloading of the element due to a sudden pressure drop is virtually impossible.
  • On request, the system is also available with mechanical or electronic level control (see under "Accessories", page 46).
  • The base pad is equipped with an anti-slip pad to eliminate the need for floor anchoring.
  • The FAEBI® rubber air spring is also available in a stainless steel version for use in outdoor areas (e.g. air-conditioning technology).

APPLICATIONS FOR RUBBER SPRINGS

Perfectly suited for source isolation of fast running presses, forging hammers and other machines and aggregates with highly dynamic disturbance forces. Passive isolation of measuring and test equipment as well as highly accurate machine tools.

 SHOCK AND VIBRATION ISOLATION WITH RUBBER AIR SPRINGS

The natural frequency of the rubber air spring in the vertical direction is between 3 and 14 Hz depending on the static load.
The maximum spring deflection in response to a pulse load is up to 15mm depending on the model and size of the air spring.

AIR PRESSURE CONTROL

FAEBI® elements can be equipped with an air pressure control on request. The air pressure monitor will indicate if the air pressure falls below the required set point.

BILZ LEVEL CONTROL SYSTEM

The level control is a significant component to ensure the optimal function of an air spring system. The level control can correct load changes that cause undesired deflection of the air elements or inclination of the machine in a machine or system equipped with air springs.

Notes

Selection and notes on the FAEBI® variants

Please select a suitable rubber air spring so that the maximum load (sum of static and dynamic load) is not exceeded.

In applications with high dynamics, harder FAEBI® variants reduce the deflection of the isolators, but the achievable isolating effect is better with softer isolators.

Please get in touch, we would be happy to assist you in selecting the most suitable elements.

  • If the bottom edge of the machine does not completely cover the diameter (Ø D – see p. 40) of the rubber air spring, we recommend the use of our special cover (see "Accessories" section on page 45–47).
  • The elements are attached to the holes provided on the machine using the bolts supplied. Anchoring to the floor is usually not necessary
  • Please bolt in by hand only, do not use a wrench! Please also fasten the corresponding nut with low torque only.
  • The machine is placed on the deflated element, which is then inflated in stages using the standard valve until dimension H (= working height) is reached. The maximum specified air pressure must also not be exceeded!
  • Ventilation and venting may only take place under load (please observe max. permissible pressure)!
  • Up to +/−5mm are available for leveling.
Your expert for vibration isolation
CONTACT
895 Highland Rd, Macedonia, Ohio

330.468.2459

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