Guide to Use
Fixing Method:
⃝ Carefully prevent the piezo actuators from being bent, being twisted, or being applied tensile force.
Reference: Guide for tolerance of twisting and tension
Reference value
3×10－1N・m or less
50 N or less
Remarks
Twisting force
Tension
For an actuator which generates a force of 800 N
（compression resistance）
⃝
Install the actuator so that the center axis of generated displacement is aligned with the center axis of the load.
a. Resin-coated type
• Epoxy-based adhesives are recommended for bonding. Select adhesives that have high rigidity and
allow minimum thickness so that the generation force and displacement cannot be deteriorated. Also do
not form adhesives at the side of actuator.
• When thermosetting resin is used, perform polarizing treatment（see the caution section）again after the
adhesive is settled.
• The resin-coated type is weak to tensile force because of its structure and may be broken when tensile
force is applied onto the device. Using the device in the state that constantly applies compression is
effective against any mechanical damage. The pressure applied to this element should be kept at 20 to
50% of the force generated by this element（compression resistance）.
• Install the element so that the axis of generated displacement is vertical to the mounting surface.
b. Metal sealed type
• Select the mounting bracket（female thread type or flange type）according to the mounting method, and
install the element utilizing the bracket.
• Fix the element securely so that the generated force and displacement cannot be deteriorated.
• Connect the driven item at the displacement generating end after securing the mounting portion so that
it avoids unnecessary stress applied at the time of installation.
• Though this product is designed to apply a compressive force to the internal element by the metal case, avoid
any usages that cause bending, twisting, or tension force when the device is in use
Example of Actuator mounting：
Moving part or load
Moving part or load
Spherical surface
Hinge
Only one side is touching the actuator.
(Stress is concentrated on one edge
and generates share mode stress)
Piezo Actuator
Piezo Actuator
Piezo Actuator
The actuator may break.
a) Example of wrong mounting
b) Example of correct mounting
Imperfect alignment between actuator and load
<Actuator will be broken>
Mount the device so that the load is uniformly
applied by the spherical surface or the hinge
Driving Method:
⃝
Connect the red lead wire to the positive（＋）terminal of the power supply. Also prevent reverse voltage application.
⃝ Basically the voltage controls the aimed displacement and generated force. In driving, however, it is also necessary
to take ringing due to the resonance or hysteresis of the element itself into consideration. In pulse driving, it is further
necessary to pay sufficient attention to heat generation due to dielectric loss, charge/discharge current due to the
capacitive component and the power output impedance as well. Please refer to the separately printed
literature, “NEC TOKIN Multilayer Piezoelectric Actuators Userʼs Manual”
Multilayer Piezoelectric Actuators Vol.06 21
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2011.06.22 9307MPAVOL06E1106H2
NEC [ NEC ]
