Compact Precision Rotation Stage with High-Speed Ultrasonic Motor Introduced by PI

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The new U-628 rotary stage is ideal for precision opto-mechanical set-ups due to its small size, high resolution and fast response.

U-628, high speed rotary positioner for opto mechanics

U-628, high speed rotary positioner for opto mechanics

On a very small footprint of only 2x2 inches it provides high rotational velocity up to 1800 RPM (1080 deg/sec).

PI (Physik Instrumente) L.P. – a leading manufacturer of opto-mechanical and nanopositioning equipment introduces the U-628, a rotary positioner driven by an ultrasonic ceramic motor.

On a very small footprint of only 2x2 inches, it provides high rotational velocity up to 1800 RPM (1080 deg/sec). An optical encoder is integrated for position feedback and direct position measurement with 35 µrad resolution.

The stage also provides a small central aperture of 7mm and comes complete with an optical reference switch. A vacuum compatible version is also available.

Ultrasonic Ceramic Direct-Drive Motor
The rotary stage is driven by a high-frequency oscillating piezoelectric ceramic that also acts as a break for the stage when at rest or when the power is shut off, improving long term stability significantly.

Application examples
Opto-mecahnics, positioning of optics, polarization rotation, sample handling and positioning where space is at a premium.

Specifications of the U628 Rotary Stage

About PI
The PI group provides the broadest and deepest portfolio of ultra-precision motion technologies, for markets as diverse as semiconductor manufacturing, bio-technology, photonics, aerospace and medical engineering. PI has 4 decades of experience with the design and manufacture of precision positioning systems based on piezoceramic and electromagnetic drives. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with 10 subsidiaries, R&D / engineering on 3 continents and total staff of 750+.

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