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XRT-A

Ultra-precise piezo rotation stage with the smallest error motion on the market.

Size: 40 x 31 x 15 mm (or custom)
Load capacity: 100 gr
Radial error motion*: < 0.5 µm (AC), < 1 µm (NC)
Axial error motion: < 0.5 µm (PB)
Tilt (wobble): < 50 µrad
Vacuum: 10-6 mbar
Non-magnetic: Available

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Compact & precise rotation stage with active error motion compensation


The XRT-A is driven by a stick-slip piezo motor. With our patented bearing technology in the XRT-A, one can actively compensate the radial error motion to a nanometre-level, even during rotation. This makes the XRT-A unique and the most precise piezo rotation stage on the market.

With a radial error motion smaller than 500 nm, the XRT-A achieves the precision of an air bearing without the need of pressurized air and a large volume and this at an advantageous price. As a result, the XRT-A is the ideal solution for vacuum and magnetic applications where a presice rotation is needed.

Key features


Mechanical properties

Size: 40 x 31 x 15 mm (or custom)
Load capacity: 100 gr
Radial error motion*: < 0.5 µm (AC), < 1 µm (NC)
Axial error motion: < 0.5 µm (PB)
Tilt (wobble): < 50 µrad
Mass: 55 gr

* Measured 7 mm above the top surface of the rotor.

Positioning

Velocity: 2 rev/min
Travel range: ∞
Angular resolution: 6.25 m° or better
Encoder type: Absolute or incremental


Driver

We recommend to use our plug and play XD-S driver to control the XRT-A.

Learn more about the axes of rotation standard and error motion measurements on our technology page.

Dimensions


xrt-a rotation stage dimensions
Dimensions in mm

Error motion measurements


XRT-A Error motion

Synchronous radial error motion with active compensation: 120 nm
Synchronous radial error motion without active compensation: 360 nm