Hermetically Sealed Piezo Stacks are Robust in Action

High performance piezo stacks in a hermetically sealed metal case. These products were developed for applications  which are characterized by harsh environment like high humidity or  harmful influences of aggressive media. These designs assure high level of reliability and efficiacy. Easy assembly in customer application is fostered by integrated pre-stress mechanism and different flange versions for easy mounting.

High tightness and inert gas result in a long-endurance product with long life

piezo stack protected for usage in humid environment
Hermetically sealed piezo stack

Inert Gas

The filling with inert gas keeps the piezo stack inside in dry condition. Long life and reliability are assured as water is excluded from the inner atmosphere. 

 

 

Hermetic Sealing

The steel container surrounds the ceramic body to prevent the penetration of gases especially humidity effectively.The steel cover establish an efficient barrier against gas penetration. Water is kept away from the ceramics stack which results in long life.

 

Metal Case

The elastic design of the steel casing ensure free elongation of the piezo stack. As the assembly of corrugated bellows is prestressed,compressive forces act on the ceramics piezo stack and provide compressive stress for long life and high performance. 

 

Flanges

Different flange designs are available for easy assembly.

 

The Range of Hermetically Sealed Stacks and Interface Variants Simplify Design

encased piezo actuator
Hermetically sealed piezo stack

Forces from 200 N to 20.000 N (cross area will change accordingly)

Displacement from 17 um to 200um (length of stack will change accordingly)

At the bottom different flanges are available.

 

Hermetically encased piezo actuatirs
Hermetically encased actuators left - no flange; bottom terminal in axial direction, top - bottom flanged with side terminal, right: female thread terminal on side

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