Linear Drive with PILine® Ultrasonic Piezomotors

For Large Quantities: Fast and Cost-Efficient Linear Drive with PILine® Ultrasonic Piezomotors

The U-264KSPA linear actuator from PI (Physik Instrumente) is a self-locking drive that has been optimized for being produced in large quantities from engineering thermoplastics.

It features a 200 mm travel range and a minimum incremental motion of 6 µm. A linear encoder with 0.6 µm resolution assures reliable position control and repeatable accuracy.

With the drive technology of PILine® ultrasonic piezo motors, velocities of up to 150 mm/s and a maximum holding force of 6 N can be achieved.

As piezomotors are self-locking at rest, no heat is generated and mechanical components such as brakes or gearhead can be dispensed with. As a result, the U-264KSPA ensures high positional stability.

The stiff design, direct coupling and fast response times of the piezo ceramics allow for a highly dynamic start/stop behavior.

What is the Driving Force of Positioning Systems with PILine® Technology?

PILine® linear drives dispense with the mechanical complexity of classical rotary motor/gear/leadscrew combinations in favor of costs and reliability. An integral part of the ultrasonic piezomotor is the piezo ceramics that is pretensioned against a movably guided runner via a coupling element. The piezo element is excited to high-frequency oscillations that cause the runner to move.

Preloading the piezoceramic actuators against the runner ensures self-locking of the drive when at rest and powered down. As a result, it does not consume any power, does not heat up, and keeps the position mechanically stable. Especially applications with a low duty cycle that are battery-operated or heat-sensitive benefit from these characteristics.

About PI
Well-known for the high quality of their products, PI is one of the leading players in the global market for precision positioning technology. PI has been developing and manufacturing standard and OEM products with piezo or motor drives for 40 years now. With four German factories and ten subsidiaries and sales offices abroad, the PI Group is represented internationally.