

Spherical Air Bearings
Standard sizes shown in chart below are now offered with shortened lead times.
Multiaxis rotational degree of freedom is often achieved using a spherical air bearing. Our standard SRA series spherical bearings provide frictionless motion in a very compact envelope with convenient mounting features. With standard tilt models, the unique design provides higher side load capacity than competing designs. An important consideration for satellite simulators. Whether withstanding the rigors of testing multi-ton spacecraft or providing highly accurate frictionless wafer-plane alignment in semiconductor tools, this versatile design offers a wide performance range and application use. See our demonstration video1. Video2. Video3. Video4. Video5.
The standard series offers a unique galling-resistant bearing surface which allows for occasional contact between the two rotating components. This property is essential in research applications where frequent assembly and disassembly of the payload occurs. These bearings also include a proprietary vibration dampening feature which greatly lessens the onset of air film instability or pneumatic hammer due to possible dynamic changes in the payload assembly.
The gimbal-type support can support side and vertical load capacities ranging from 1 kg to 10000 kg. Housing materials may include: stainless steel, aluminum, brass, glass, nickel, super invar, Macor, PEEK, ceramic, graphite, porous carbon & others.
Optional accessories include: pedestal, stage platform, angular encoder, filtration system, air compressor and more.
Please inquire about our Additional Hardware and Mounting Components
Specifications
Model |
Tilt +/- ( degrees ) |
Spherical Radius |
Vertical Load Capacity (30 deg model) |
Side Load Capacity (30 deg model) (lbf) |
Downloads |
---|---|---|---|---|---|
SRA100 |
30 or 45 |
1.00 |
69 |
20 |
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SRA150 |
30 or 45 |
1.50 |
171 |
50 |
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SRA200 |
30 or 45 |
2.00 |
318 |
101 |
30° or 45° |
SRA250 |
30 or 45 |
2.50 |
510 |
160 |
30° or 45° |
SRA300 |
30 or 45 |
3.00 |
748 |
230 |
30° or 45° |
SRA350 |
30 or 45 |
3.50 |
1031 |
268 |
30° or 45° |
SRA400 |
30 or 45 |
4.00 |
1359 |
355 |
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SRA850 |
30 or 45 |
8.50 |
12,180 |
1927 |
30° or 45° |
Air quality requirements... |
