Patented by the CEDRAT Group, the amplified piezo actuator is a mechanical
magnified preloaded stack of low voltage piezoelectric ceramics (MLA). The mechanical
amplification is obtained thanks to an external elliptical shell made of stainless
steel which magnify along the short axis the MLA deformation occurring along
the main axis. This elliptical frame also protects the MLA against tensile force.
It provides the user with mechanical interfaces for easy integration. This prestressing
and magnifying flextensionnal frame applies an optimal preloading force to the
MLA which ensures a longer life time and better performance than traditional
mechanical amplifier based on lever arm and flexure pivot, when applied dynamically.
The Amplified Piezo Actuators, APAs, developed by the CEDRAT Group have force
and displacement performance ranges which are beyond that of direct or bimorph
The APA25XS is the smallest stroke and the highest force version of the Amplified
Piezo Actuator XS series.
- Stroke (µm): 27,8
- Blocked force (N): 19,3
- Resonance frequency (Hz): 4600
- Dimensions (mm): 6 x 12,9 x 9
- Strain Gages
- Non Magnetic
- Specific Interface