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
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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.