Precision rotation stages | 'XRT-U'

Compact, fast, precise & durable

This is the XRT-U series. These miniature rotation stages are driven by an ultrasonic piezo motor, offering you the best of both worlds:

1) The precision and compactness of a piezo stage.
2) The lifetime and speed of an electromagnetic motor.

Enjoy!

Only 1 - 2 weeks lead time for most products.

Miniature rotation stages

Height:	21 ... 34 mm
Rotor diameter:	32 ... 65 mm
Mass:	82 ... 450 g
Resolution:	109 ... 3 µrad (6250 ... 170 µ°)
Max. speed:	720 °/s
Driving torque:	14 ... 90 mNm*
Load capacity:	0.5 ... 5 kg
Lifetime:	> 1000 km / typ. 10 mill. rev.
Vacuum compatibility?	Optional
Non-magnetic body?	Optional. No magnetic generation by default.

*Need more power? We offer special high-torque variants. Inquire to learn more.

Our rotation stages can easily be combined into multi-axis systems

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Encoder resolution

Rotor diameter

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Additional info

Dimensions: 50 x 46 x 21 mm
Load capacity: 1 g
Lifetime: > 10 million rev.

HV / UHV vacuum - optional ⓘ

Non magnetic - optional ⓘ

Product code:
XRT-U-30-109

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Prices depend on precision level, diameter and optional features.
Most rotation stages cost between $1400 and $1900 per axis.
Most controllers between $800 (single-axis) and $2600 (multi-axis benchtop model).
XYZ setup including controller starts at $6500.
Lead time just 1 - 2 weeks for most products.

Technical details

Vacuum compatibility

Xeryon's stages are available as high vacuum (HV, 10-6 mbar) and ultra-high vacuum (UHV, 10-9 mbar) variants. We offer several vacuum feedthrough flanges, including D-Sub 15-pin (standard), Fischer 12-pin and Lemo 12-pin. For more info, please contact us.

Non-magnetic

1. None of Xeryon's products generate a magnetic field, thanks to the absence of copper windings or magnets.
2. Xeryon stages can be made without any ferromagnetic materials, making them usable in magnetic fields up to 10T ('Full non-magnetic' option).

For fluctuating magnetic fields, we offer reinforced PEEK plates in order to minimize unwanted eddy current formation.

Large volumes or custom designs? Explore our OEM solutions

Compact, precise & fast

No loss of accuracy over time
Maintenance free
Non-magnetic & vacuum-compatible versions
Noiseless, direct-drive
Manually overridable without affecting lifetime
Low & safe voltage (<48V)
Capable of slow and constant scanning speeds
One-to-one interchangeability with other stage brands

Product videos

Trusted by numerous industry leaders

Compact & precise rotation stage | XRT-U

The XRT-U is a compact and very precise rotation stage driven by an ultrasonic piezo motor. With the XRT-U, you can achieve error motion values close to an air bearing rotary stage, but in a smaller volume and for a lower price.

Compared to other piezo motor technologies, an ultrasonic piezo motor ensures you a non-degrading and vibration-free precision without generating any undesired dither motion during standstill. This makes the XRT-U a state-of-the-art rotation stage for applications such as micro-CT scanners, metrology applications and vacuum and non-magnetic applications, such as electron microscopy.

Not familiar with ultrasonic piezo technology? Have a look at our evaluation kits, the perfect way to experiment with our products!

Frequently asked questions

Our Crossfixx™ ultrasonic piezo motor uses vibration to move a ceramic tip in an elliptical pattern at a very high frequency (80 kHz - 180 kHz). Spring-loaded against a ceramic strip inside the stage, it generates very small but rapid movements, resulting in high-speed motion and silent operation with a long lifetime.

This gives you the best of both worlds:

1) The lifetime and speed of an electromagnetic motor.
2) The precision and compactness of a piezo stage.

Xeryon’s ultrasonic piezo stages offer the precision and size of traditional piezo stages, without their typical drawbacks.

Our rotation stages are much faster, have a much (much!) longer lifetime, operate noiselessly, consume less power, and operate at a much lower voltage at the piezo element.

Traditional stick-slip piezo stages operate at much lower frequencies, typically within the frequency range of small mechanical components. Apart from being in the human audible spectrum, this introduces the risk of the stick-slip piezo motor making the entire system vibrate, rather than only the motor itself.

Xeryon's ultrasonic rotation stages operate at much higher frequencies (80 - 180 kHz), ensuring silent operation and no unwanted vibrations.

An in-depth comparison of the different types of piezo motors can be found here.

Xeryon’s piezo rotary stages offer a unique combination of high rotational speed, precision and durability in an ultra-compact design, overcoming the limitations of traditional rotary stages where trade-offs have to be made (e.g. size factor or speed). Xeryon’s stages are gearless, self-locking, energy-efficient and operate at low voltages. They don’t produce a magnetic field, are back-driveable, and free from drift or play.