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 All Categories    U-622 PILine® Rotation Stages
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Item # U-622.03, U-622 PILine® Rotation Stages

Miniature stage with ultrasonic piezo motor

Extremely space-saving

Positions small loads quickly and with precision

Self-locking when switched off: Saves energy and reduces generation of heat

Light and low noise

Precision-class rotation stage
PILine® stages are particularly suitable for applications that require fast precision positioning. When switched off, the self-locking 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.

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.

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.

Fields of application
Micromanipulation, Automation, Biotechnology, Sample manipulation, Sample positioning, optical metrology


Active Axes


Rotation Range

>360 º

Velocity, Closed Loop (max.)

720 º/s

Min. Incremental Motion (typ.)

525 µrad

Bidirectional Repeatability

±1050 µrad

Sensor Type

Incremental Encoder

Sensor Resolution

175 µrad

Load Capacity / Axial Force (max.)

0.3 N

Holding Force (max.)

0.005 Nm

Motor Type

PILine® ultrasonic piezo motor, performance class 1

Drive Torque Clockwise / Counterclockwise (θz) (max.)

0.005 Nm

Motor / Sensor

1 x Sub-D 15 (m)

Reference Point Switch


Operating Temperature

0 to 40 ºC


Anodized Aluminum


120 g

Mass Tolerance

±5 %

Cable Length (typ.)

1.5 m

Recommended Electronics


Edge Length

20 mm

Edge Height

10 mm


All specifications based on room temperature (22 ºC ±3 ºC).

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