U-628
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PILine® Rotation Stage Miniature Stage with Ultrasonic Piezo Motor and Central Opening U-628  Compact: Edge length 50 mm, height 19 mm  Positions loads quickly and with precision: Velocity to 720 °/s, minimum incremental motion to 51 µrad  Unlimited rotation range >360°  Drive torque 25 mNm  Self-locking when switched off: Saves energy and reduces generation of heat  Central aperture for more fields of application Precision-class rotation stage PILine® stages are particularly suitable for applications that require fast precision positioning. When switched off, the selflocking drive holds the position of the stage mechanically stable. Energy consumption and heat generation are therefore considerably reduced. Applications with a low duty cycle that are battery-powered or heat-sensitive benefit from these characteristics. The position of the axis is measured by an encoder and an optical reference switch allows reliable repeatable motion. The piezomotor drive principle and its electrical operation are inexpensive and can be customized. PILine® ultrasonic piezomotor An integral part of a PILine® ultrasonic piezomotor is a piezo actuator that is preloaded against a movable, guided runner via a coupling element. The piezoceramic actuator is excited to ultrasonic oscillation by a high-frequency AC voltage between 100 and 200 kHz. Deformation of the actuator leads to periodic diagonal motion of the coupling element relative to the runner. The feed created is a few nanometers per cycle; the high frequencies lead to the high velocities. Preloading the piezoceramic actuator against the runner ensures self-locking of the drive when at rest and switched off. Highly accurate position measuring with incremental encoder Noncontact optical encoders measure the position directly at the platform with the greatest accuracy. Nonlinearity, mechanical play, or elastic deformation have no influence on the measurement. Fields of application Micromanipulation, Automation, Biotechnology, Sample manipulation, Sample positioning, Applications with limited space, -6 optical metrology, Vacuum applications to 10 hPa (optio

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All specifications based on room temperature (22 °C ±3 °C). Vacuum versions to 10 hPa available on request. Specifications for vacuum versions can differ. Ask about customized versions.

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Drawings / Images Ordering Information U-628.03 PILine® rotation stage, >360° rotation range, velocity 720°/s, incremental encoder, 17 µrad resolution, 49 mm diameter, piezoelectric ultrasonic motor Accessories U-600.A01 Extension cable for PILine®, Sub-D 15-pin, 1 m U-600.A03 Extension cable for PILine®, Sub-D 15-pin, 3 m U-600.A05 Extension cable for PILine®, Sub-D 15-pin, 5 m

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U-628
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