10 Technical Data
52
Version: 1.0.0
PZ265E
PL0xx/PDxxx Piezo Actuator
Piezo actuator* Maximum
operating voltage
range
Maximum operating frequency
without load
Maximum power
consumption
A:
B:
Without
considering
thermal aspects
Considering
thermal aspects
Considering
thermal aspects
PD160.3x
–20 V to 100 V
83.3 kHz
40 Hz
1.3 W
PD161.3x
–20 V to 100 V
83.3 kHz
30 Hz
1.4 W
* The letter x in the product number of the piezo actuator stands for the model:
1: Models with stranded wires
0: Models without stranded wires
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.
The tensile stress capacity of piezo actuators is just 5 to 10 % of the compressive load capacity.
It is therefore recommended to mechanically preload the actuators. The preload should be
chosen only as high as necessary.
Compressive/tensile stress capacity and preload of the PL0xx/PDxxx
Type of mechanical stress
PL0xx/PDxxx*
Maximum compressive load capacity
30 MPa
Maximum tensile stress capacity without preload
2 MPa**
Recommended preload for dynamic operation
15 MPa
Maximum preload for constant force
30 MPa
* 1 MPa corresponds to a pressure of 1 N per square millimeter of the base area of the piezo
actuator. Dimensions see data table (p. 49).
** Depends on the strength of the glued connections (p. 26)