Radiax Air Bearing For Axial And Radial Bearings
For sophisticated and smooth storage
With a radiax air bearing, your bearings are contactless and therefore friction-free. 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. Radiax air bearings enable axial and radial air bearings, which is a groundbreaking innovation in air bearing technology.
The rotary movement is supported with the highest precision and without friction, which corresponds to a radial bearing. The axial bearing preloads both the horizontal and vertical surfaces with opposing thin-film pressure. This maintains the optimum gap tolerance.
The surface design of these air bearings distributes the air and preload evenly over the entire surface. The result is excellent rigidity and maximum performance in the form of a radiax air bearing.
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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 radiax air bearings (long design)
| Characteristics | Unit | OAVTB16i04 | OAVTB24i06 | OAVTB32i13 | OAVTB60i20 | OAVTB60i25 | OAVTB100i50 | OAVTB150i75 |
|---|---|---|---|---|---|---|---|---|
| ID Ø | mm | 4 | 6 | 13 | 20 | 25 | 50 | 75 |
| Bore ID Ø | mm | 4.018 +0.005/-0.000 | 6.018 +0.005/-0.000 | 13.018 +0.005/-0.000 | 20.018 +0.018/-0.000 | 25.018 +0.005/-0.000 | 50.018 +0.005/-0.000 | 75.018 +0.005/-0.000 |
| OD Ø | mm | 16.1 | 23.67 +0.13/-0.00 | 32 | 60 | 100 | 150 | |
| Length | mm | 33 | 53.4 | 52,8 | 79,2 | 79,2 | 91,4 | 91,4 |
| Shaft Ø | mm | 4.00 -0.02 | 6 -0.02 | 13 +0.00/-0.02 | 20 +0.00/-0.02 | 25 +0.00/-0.02 | 50 +0.00/-0.02 | 75 +0.00/-0.02 |
| Inlet pressure | MPa | 0.28 - 0.68 | ||||||
| Air connection | M3 x 0.5 | M3 x 0.5 | M3 x 0.5 | M5 x 0.8 | M5 x 0.8 | M5 x 0.8 | M5 x 0.8 | |
| Radial load max. | N | 9.34 | 20.9 | 43.1 | 240.2 | 305.1 | 871.4 | 1306.9 |
| Radial Stiffness | N/µm | 5 | 5.1 | 11 | 23 | 34 | 110 | 159 |
| Thrust Load Capacity | N | 16.01 | 28.4 | 81.4 | 373.7 | 302.9 | 862.1 | 2215.2 |
| Pitch Moment Max | Nm | 0.013 | 0.4 | 0.8 | 1.1 | 1.9 | 5.2 | 7.1 |
| Weight | g | 13.8 | 30.8 | 86 | 465 | 416.9 | 1237.9 | 2899.9 |
Models of radiax air bearings (short design)
| Characteristics | Unit | OAVTR32i13 | OAVTR60i20 | OAVTR60i25 | OAVTR100i50 | OAVTR150i75 |
|---|---|---|---|---|---|---|
| ID Ø | mm | 13 | 20 | 25 | 50 | 75 |
| Bore-ID Ø | mm +0.005/-0.000 | 13.018 | 20.018 | 25.018 | 50.018 | 75.018 |
| OD Ø | mm | 31.8 | 60 | 100 | 150 | |
| Length | mm | 12.7 | 16.5 | 16.5 | 19.6 | 19.6 |
| Shaft Ø | mm 0.00/-0.02 | 13 | 20 | 25 | 50 | 75 |
| Inlet pressure | MPa | 0.28 - 0.68 | ||||
| Air connection | M3 x 0.5 | M5 x 0.8 | M5 x 0.8 | M5 x 0.8 | M5 x 0.8 | |
| Radial load max. | N | 10.7 | 52.2 | 65.2 | 191.1 | 286.5 |
| Stiffness radial | N/µm | 2.6 | 5 | 7.3 | 24 | 34.8 |
| Thrust Load Capacity | N | 81.4 | 373.7 | 302.9 | 862.1 | 2215.2 |
| Bending moment | Nm | 0.8 | 1.1 | 1.9 | 5.2 | 7.1 |
| Weight | g | 12.8 | 95.7 | 86.7 | 266.3 | 476.4 |
| Air consumption* | m³/h | 0.229 | 0.442 | 0.419 | 0.807 | 1.192 |
*Applies at temperature 0° C and air pressure 101.325 Pa (1.01325 bar)
Standards and guidelines
REACH- RoHS2
We are guaranteed to find the right air bearing for you - free of charge & without obligation
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.