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> Ceramic Linear Motors: PILine Ultrasonic Motors, Nexline PiezoWalk Nano-Drivers > Item # U-723.25
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Item # U-723.25, U-723 PILine® XY Stages

Compact XY Stage with Ultrasonic Piezo Motors

Fast positioning in 2 axes

Space-saving and light

High guiding accuracy

Self-locking, no heat generation at rest

Low-noise operation


Travel Range

22 x 22 mm

Bidirectional Repeatability

±0.2 µm

Active Axes


Closed Loop Velocity (max.)

200 mm/s

Pitch (max.)

±60 µrad

Yaw (max.)

±300 µrad

Load Capacity in Z (max.)

5 N

Mass without Cable

110 g

Linear Guide

Crossed roller bearing with anti-creep system

Drive Type

PILine® ultrasonic piezo motor, performance class 1

Nominal Force (typ.)

2 N

Holding Force (typ.)

2 N

Integrated Sensor

Incremental Sensor

Sin/Cos Signal

Sensor Resolution

10 nm

Minimum Incremental Motion (typ.)

0.1 µm

Reference Point Switch

Direction-sensing optical reference point switch

Operating Temperature Range

0 to 40 ºC

Relative Humidity (Not Condensing)

20 to 90 %


Anodized Aluminum

Motor / Sensor Connection

2 × Sub-D 15 (m)

Cable Length

2 × 1.5 m

Recommended Electronics


Additional Information

Precision-class XY 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 piezomotors
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, applications with limited space, vacuum applications to 10-6 hPa (optional)


Technical data specified at room temperature (22±3 ºC) with C-867.2U2.

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