Pneumatic Air Spring | Membrane Air Spring | Vibration Isolation of CMM is Manufacturers, Suppliers, Dealers, Distributors, Stockist, Traders, Exporters, Wholesalers, Retailers, Producers in India - Machine House India Pvt. Ltd.Welcome to 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

Type	A	B	C	Working height H	+/- travel	max. load Kg** at an air pressure of
	mm	mm	mm	mm		4 bar	6 bar
0.125*	76	72	72	77	+/-2.0	39	58
0.15*	76	72	72	77	+/-2.0	67	100
0.25*	120	182	110	87	+/-2.5	113	170
0.5	130	198	129	100	+/-2.5	267	400
1	200	275	200	100	+/-2.5	633	950
1.5	230	305	230	100	+/-3.5	1,017	1,526
2	260	350	260	100	+/-2.5	1,420	2,130
2.5	300	390	300	100	+/-3.0	1,967	2,950

* Natural frequency vertical approximately 3.0 Hz, horizontal approximately 3.5 Hz
** When selecting the size of air spring please select an air pressure of 4 bar.

	Working height H in mm			ØA	B	ØC	+/- travel	max. load Kg* *at an air pressure of
Type	BiAir®-ED	ED/HE	ED/ HE-MAX	mm	mm	mm	mm	4 bar	6 bar
0.5	157	307	-	120	216	129	+/-2.5	267	400
1	157	307	509	172*	288	200	+/-2.5	633	950
1.5	157	307	509	212*	305	230	+/-3.5	1,017	1,526
2	157	307	509	226*	335	260	+/-2.5	1,420	2,130
2.5	157	307	509	271*	378	300	+/-3.0	1,967	2,950
3	157	307	509	348*	467	382	+/-2.5	3,413	5,120
4	157	307	509	490	605	530	+/-2.75	6,573	9,860
5	157	-	509	747	875	798	+/-3.5	15,573	23,360

* For the sizes 1 to 3 of series ED/HE-MAX the ØA is the same as ØC (piston diameter)
** When selecting the size of air spring please select an air pressure of 4 bar.

Bilz level control systems are significant components in the ®optimum function of vibration insulation using FAEBI® and FAEBI®-HD rubber or BiAir® membrane air springs. They prevent impermissible and undesired deflection of the insulators or an out-of-level condition of the machine that can be caused by load changes on an air spring mounted machine or system.Rapidly adding or venting air enables the air pressure within the air spring to be matched to the respective load, automatically controlling the height of the individual air springs. This enables the highest degree of stability and effective insulation even with changes in the centre of gravity.

Valve functions
The level is continuously sensed using the plunger. The position of the plunger is directly applied to the slide valveand the air spring is either pressurized or vented. The target levelis adjusted by turning the knurled adjustment ring. The heightand level of the machine is adjusted using three valves.

Design
At least three air springs are controlled (Fig. 1). If more insulators are required due to reasons of design or load, the systemmust still be worked in three controlled groups, as otherwisethe system is statically overdetermined. This is achieved byusing multiple insulators in parallel as a group (Fig.2). An additional air maintenance unit is installed upstream of the control valves to prepare the compressed air.

Note

Supplied as a complete set which includes the 3 control valves and all necessary hose lines and connectors. All components are also individually available as spare parts.
In addition to the standard solutions listed here we also hold special versions with regard to material, flow, accuracy and restoring force.
On the LCV variant the air flow can be reduced using the throttle valve should the control system tend to overshoot.The PVM
variant can also be fitted with a throttle valve as an option.
If you have any questions please contact us, we would be happy to advise you.

Machine House (India) Pvt Ltd

TYPE SERIES BiAir-ED-AL IN ANODISED ALUMINIUM

TYPE SERIES BiAir®-ED/-HE/-HE-MAX IN CAST ALUMINIUM

MPN - LCV

MPN - PVM

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