Steel springs are a thing of the past. Air spring isolators are the new and improved solution for isolating vibration, shock, or structure borne noise. They offer a variety of benefits over a traditional steel spring to help you achieve a greater isolation effect and keep your equipment running properly. Bilz offers two air spring options that each have unique advantages and applications: FAEBI® Rubber Air Springs and BiAir® Low Frequency Membrane Air Springs. Keep reading to discover how each air spring works and identify the solution best suited for your equipment!
FAEBI® rubber air springs consist of a bell-shaped rubber form made from high-grade elastomer with a reinforced side wall. This constructive design not only achieves excellent isolation properties, but also creates very high mechanical stability. This means that it is virtually impossible for damage to occur due to overload with these air springs. Anti-slip pads are placed on the base plate of the air spring so they typically do not need to be anchored to the floor.
In comparison to steel springs, FAEBI® air springs offer many advantages when used for vibration isolation. First, they have a more flexible isolation system design. They can compensate for changes in either static or dynamic loads by adjusting the air pressure. This can be performed either manually or pneumatically using Bilz level control. FAEBI® air springs also have integrated damping, therefore separate damping is not necessary. Last, these airsprings will not transmit structure borne noise unlike a traditional steel spring.
FAEBI® air springs are an ideal solution for source isolation of fast running presses, forging hammers and other machines and assemblies with highly dynamic disturbance forces. In addition, they can achieve passive isolation of measuring and test equipment as well as highly accurate machine tools. You can combine these air springs with mechanical level control on request.
The BiAir® membrane air spring isolator is made of machined or cast aluminium. The air space is enclosed by a thin-walled flexible and pressure-resistant rolling membrane. A piston sits on top of the membrane and is pressed into the air space.This design allows a highly-effective isolation against vibration. In order to simultaneously achieve a high degree of damping, the air space within the isolator is divided into two chambers connected with an air tube. An adjustable throttle valve is used to set the flow cross section to the desired damping effect from the outside. Additional safety valves or a mechanical piston stroke limit can eliminate damage to the rolling membrane due to overpressure.
Unlike steel springs, BiAir® air spring isolators with active level control constantly maintain the correct level of machines or foundations. Maintaining level control and making adjustments is a completely automatic process in these air springs. The pressure in the air springs is appropriately adjusted by inflating or deflating in response to load changes. This keeps the isolating effect constant in every case. BiAir® air springs also do not transmit structure-borne sound like a traditional steel spring.
BiAir® air spring isolators are perfectly suited for vibration isolation of sensitive measurement and testing equipment, precise finishing machines, laser equipment as well as optical and electronic instruments. They can also be used for vibration isolated mountings of vehicles, engines and gearbox test stands and machine foundation isolation.
