Air bearing with vacuum-generated preload
For maximum precision, smooth operation and optimum synchronization

With a vacuum air bearing, you can store without contact and therefore without friction. This is achieved with a thin layer of compressed gas. The air serves as a lubricant that flows out of porous material. This allows you to move your load with high precision, dynamically and smoothly.

Air bearings preloaded with vacuum glide on flat, non-porous surfaces such as granite, aluminum, glass and ceramic. The combination of air pressure and vacuum presses the load onto the surface and lifts it at the same time.

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Your advantages of an air bearing

Infinite service life, as maintenance-free.
Fast and smooth movements that do not jerk even at the highest resolution.
Much more precise positioning is possible with air bearings.
There is no loss of energy and no source of heat due to friction.
Free of lubricants or other lubricants.

Features

Housing material made of 7075 Al/anodized
Air-permeable graphite material

Models of vacuum air bearings

Characteristics	Unit	OAVR050RV	OAVR080RV	OAVR100RV
OD Ø	mm	50	80	100
Bearing height	mm	22	22	22
Air gap	µm	5	5	5
Flatness	mm	0,001	0,001	0,001
Inlet pressure	MPa	0.28 - 0.68
Air connection		M5 x 0.8
Vacuum inlet	MPa	0.0508
Vacuum connection		M5 x 0.8
Nominal load	N	46	113	173
Stiffness	N/µm	13	30	48
Weight	g	98	253	382
Air consumption*	m³/h	0,068	0,079	0,139

*Applies at temperature 0° C and air pressure 101.325 Pa (1.01325 bar)

Standards and guidelines

REACH
RoHS2

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FAQ

Can another gas also be used? Compressed air is commonly used in industrial applications. Compressed nitrogen is also possible, but this also changes the air bearing values. All specifications must be considered when using compressed air.
How clean must the supply air be? Cleanliness class between 3 and 4 of ISO 8573.1
How are air bearings maintained? The air bearings are maintenance-free.
Can I clean the surface? Use a soft cloth with isopropyl alcohol and let it dry.
How do I install an air bearing? Please read the instructions before starting. Each type of air bearing must be installed differently and this should be taken into account during the design phase.
How does an air bearing maintain stability and damping effect? Air bearings are coated with a special epoxy resin that seals the pores on the surface where no airflow is desired. The design thus forces the airflow in the direction of the friction-free surface. This results in greater rigidity, more stability and better damping properties.

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