Machine House (India) Pvt Ltd

The BiAir® membrane air spring insulator is made of turned 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 insulation against vibration. In order to simultaneously achieve a high degree of damping, the air space within the insulator is divided into two chambers connected with an air tube (load/damping volume). An adjustable throttle valve is used to set the flow cross section to the desired damping effect from the outside. The friction in the air flow generated by the throttle valve can create a damping effect of up to 15%. Damage to the rolling membrane due to overpressure is virtually excluded through the use of additional safety valves or a mechanical piston stroke limit.

• Highly effective vibration insulation of

sensitive measurement and testing equipment,
precise finishing machines,
laser equipment as well as optical and electronic instruments.

• Vibration insulated bearings for vehicle, engine and gearbox test beds
• Foundation insulation

Advantages compared to conventional steel springs
The use of Bilz BiAir® air spring insulators with active level control constantly maintains the correct level of machines or foundations. The level control and adjustment is completely automatic! The pressure in the air springs is appropriately adjusted by in-or deflating in response to load changes. This keeps the insulating effect constant in every case. Unlike steel springs air springs do not transmit structure-borne sound