10 Technical Data
P-88x.x5 Piezo Actuator
PZ266E
Version: 1.1.0
41
10.1.3
Compressive/Tensile Stress Capacity and Preload
Piezo ceramic withstands a pressure of up to 250 MPa but starts to depolarize at significantly
lower compressive loads. Since stacked piezo actuators are also made of different materials
(piezo ceramic, metallic electrodes), the mechanical load capacity does not depend solely on
the strength of the ceramic material. Consideration must be given to additional parameters
such as slenderness ratio, bending, tilt and homogeneity of the force application.
Tensile stress can damage the piezo actuator and must be avoided. It is recommended to
preload the actuators mechanically to reduce tensile stress during operation. The preload
should be chosen only as high as necessary.
Compressive/tensile stress capacity and preload of the P-88x.x5
Type of mechanical stress
P-88x.x5*
Maximum compressive load capacity
10 MPa
Maximum tensile stress capacity without preload
None
Recommended preload for dynamic operation**
5 MPa
Maximum preload for constant force
10 MPa
* 1 MPa corresponds to a pressure of 1 N per square millimeter surface of the piezo actuator
(see "Dimensions" (p. 42)).
** If your application involves dynamic operation, contact our customer service department
(p. 37).
10.1.4
Ambient Conditions and Classifications
Pay attention to the following ambient conditions and classifications for the P-88x.x5:
Area of application
For indoor use only
Air pressure
10
-9
hPa to 1500 hPa
Relative humidity
0 to 100 %
Operating temperature
-40 °C to 150 °C
The operating temperature does
not
apply to dynamic
operation.
If your application involves dynamic operation,
contact our customer service department (p. 37).
Storage temperature
-40 °C to 80 °C
Transport temperature
-40 °C to 80 °C
Maximum bakeout temperature
(when using in a vacuum)
150 °C
Overvoltage category
II
Degree of pollution
1