PI News / Press Releases Overview
Latest Products
Date: 01/2009
PI News: N-380, N-381 NEXACT® Linear Actuator, Manipulator, Piezo-Stepper; N380, N381, Piezo Worm

N-380, N-381 NEXACT® Linear Actuator, Nano-Manipulator, Piezo Stepper Drive

  • Replaces Classical Lead Screw Actuators
  • Travel Range 30 mm
  • Zero-Wear Piezo Stepping Drive Principle, Ideal for Micro- and Nano-Manipulation
  • Optional Linear Encoder for Highest Repeatability & Accuracy
  • Very High Acceleration, e.g. for Cell Penetration
  • Two Operating Modes: Continuous Stepping Mode and Continuously Variable, High-Dynamics Analog Mode for up to 30 Picometer Resolution
  • Up to 10 N Force Generation
  • Self Locking at Rest, no Heat Generation,
  • No Closed-Loop Servo Jitter
  • Vacuum-Compatible and Non-Magnetic Versions

The compact N-380/N-381 piezo walk linear actuators have a number of advantages over classical lead-screw actuators. The novel drive principle allows long travel ranges and rapid accelerations, for high-dynamics / high-throughput applications.

An “analog mode” can be used for fast oscillations with amplitudes of several microns and frequencies to several 100 Hz. Open-loop and closed-loop models are available: the N-381 model is equipped with a high-resolution position sensor, allowing sub-micron repeatability. The N-380 open-loop version is intended for high precision applications where the absolute position is not important or is controlled by an external loop (video, laser, etc.).

Datasheets & Additional Information

>> N-380, N-381 Online Datasheet
>> N-380, N-381 PDF Datasheet

>> Piezo Walk Background Information

N-381 piezo stepper linear actuator for sample positioning and manipulation provides long travel, high speed and very high resolution


>> Free 500 p. Hardbound Catalog

Return to News Overview


PI is a leading manufacturer of nanopositioning, linear actuatorsand precision motion-control equipment for photonics, nanotechnology, semiconductor and life science applications .
PI has been developing and manufacturing standard & custom precision products with piezoelectric and electromagnetic drives for 40 years.
The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research.
PI is present worldwide with eight subsidiaries and total staff of 500+.