Mounting The P-88X/P-08X; Applying A Preload - PI P-88 Series User Manual

5 Installatio
5.3

Mounting the P-88x/P-08x

P-88x/P-08x piezo actuators are glued to metal or ceramic surfaces.
Requirements
 You have read and understood the general notes on installation (p. 17).
 The P-88x/P-08x is discharged (p. 39) and short-circuited (p. 40).
 You have read and understood the user information of the manufacturer of the
adhesive.
Tools and accessories
Level surface that is dry, dust-free, and grease-free

Suitable adhesive (e.g., cold-hardening epoxy resin adhesive)


Mounting the P-88x/P-08x

1. Glue the piezo actuator to the surface:
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−
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2. Press the piezo actuator until the adhesive has hardened.
5.4

Applying a Preload

The tensile stress capacity of piezo actuators is relatively low. It is therefore recommended to
mechanically preload the piezo actuators in the application, either externally in the mechanical
structure or internally in a housing.
Requirements
 You have read and understood the general notes on installation (p. 17).
 The P-88x/P-08x is discharged (p. 39) and short-circuited (p. 40).
Tools and accessories
When installing in a housing: Suitable housing

Suitable guide elements

When creating the preload with a spring:

Suitable preload spring with the following characteristics:
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26 Version: 1.1.0
Apply the thinnest possible layer of adhesive.
During the hardening process, maintain the operating temperature range (p. 52)
specified for the piezo actuator.
Pay attention to the temperature expansion coefficients of the materials involved.
The stiffness of the preload spring does not exceed 10 % of the stiffness (p. 47) of
the piezo actuator. This is to minimize the displacement loss. If the stiffness of the
preload spring is equal to that of the actuator, the free displacement drops by half.
PZ259E P-88x/P-08x Piezo Actuator