- motion up to 25 µm
- free center hole up to 14mm
- sub nm-resolution
- maximum load 4000 N
- high dynamic properties (series RA)
- msec response time
- max. voltage 150 V (multilayer)
- option: positioning feed back sensor for closed loop control
- flexible Epoxy insulation
Piezoelectric ring actuators consist of a large number of contacted ceramic discs. Compared with the tube actuator, the ring actuator reaches a higher stiffness and the expansion is twice as high.
The ring actuator is available with (series RA) and without (series R) housing. The actuator without housing is only connected at the ceramic top and ground plate. The actuator with housing is fastened with screws at the drill hole. Ringactuators without housing can only be used in dynamic applications with additional pre-load.
Series RA ring actuators are available with strain gauge feed back sensor on request.
Please ask for a screwing top plate for easy mounting of mirrors.
applications:
- micro positioning
- mirror adjustment
- scanning systems for atomic force microscopes
- piezoelectrical pumps
