Micromechatronics, Inc. (MMech)

www.mmech.com - Ph: 814-861-5688

 

CEDRAT Parallel Pre-stressed Actuators Specifications

CEDRAT Piezoelectric Actuators 

The parallel pre-stressed actuator is a preloaded stack of low voltage piezoelectric ceramics (MLA). The preload (or pre-stress) is obtained from an external spring frame made of stainless steel which protects the MLA against tensile force and provides mechanical interfaces for the user allowing an easier integration. This prestressing frame applies an optimal preloading force to the MLA which ensures a longer lifetime and better performance with dynamic applications than traditional preloaded actuators.

Designed by CEDRAT TECHNOLOGIES, this new direct piezo actuator results from contracts carried out for CNES, the French Space Agency. The PPA model is lighter than the compacting Direct Piezo Actuator, with the same electromechanical properties. Its compact size also makes integration easier in mechanical assembly.

Three series of PPAs are available (M, L, XL) in order to meet the different needs in terms of stroke, force and dimensions:

PPA10M_image_small

PPA10M

Smallest size version of the Parallel Pre-stressed Actuator M series

Stroke: 9µm
Blocked Force: 800N
Resonance Freq: 60800Hz (unloaded)
Dimensions (mm): 18x10x9

Options: Strain Gauge; Non magnetic; Vacuum; High Temperature; Specific Interface

Status: Standard Product

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PPA20M_image-small

PPA20M

Middle size version of the Parallel Pre-stressed Actuator M series

Stroke: 20µm
Blocked Force: 800N
Resonance Freq: 38500Hz (unloaded)
Dimensions (mm): 28x10x9

Options: Strain Gauge; Non magnetic; Vacuum; High Temperature; Specific Interface

Status: Standard Product

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PPA40M_image_small

PPA40M

Biggest size version of the Parallel Pre-stressed Actuator M series

Stroke: 36µm
Blocked Force: 800N
Resonance Freq: 23400Hz (unloaded)
Dimensions (mm): 48x10x9

Options: Strain Gauge; Non magnetic; Vacuum; High Temperature; Specific Interface

Status: Standard Product

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PPA40L-imag-small

PPA40L

Smallest size version of the Parallel Pre-stressed Actuator L series

Stroke: 45µm
Blocked Force: 3500N
Resonance Freq: 14300Hz (unloaded)
Dimensions (mm): 57x23.5x18

Options: Strain Gauge; Vacuum; High Temperature; Specific Interface

Status: Standard Product

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PPA60L-img-small

PPA60L

Middle size version of the Parallel Pre-stressed Actuator L series

Stroke: 70µm
Blocked Force: 3500N
Resonance Freq: 10900Hz (unloaded)
Dimensions (mm): 77x23.5x18

Options: Strain Gauge; Vacuum; High Temperature; Specific Interface

Status: Standard Product

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PPA80L-imag-small

PPA80L

Biggest size version of the Parallel Pre-stressed Actuator L series

Stroke: 94µm
Blocked Force: 3500N
Resonance Freq: 8840Hz (unloaded)
Dimensions (mm): 97x23.5x18

Options: Strain Gauge; Vacuum; High Temperature; Specific Interface

Status: Standard Product

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PPA120L_med

PPA120L

Biggest size version of the Parallel Pre-stressed Actuator L series

Stroke: 130µm
Blocked Force: 2957N
Resonance Freq: 13191Hz (unloaded)
Dimensions (mm): 137x23.5x18

Options: Strain Gauge; Vacuum; Specific Interface

Status: Standard Product

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PPA40XL_med

PPA40XL

Smallest size version of the Parallel Pre-stressed Actuator XL series

Stroke: 44µm
Blocked Force: 7000N
Resonance Freq: 13600Hz (unloaded)
Dimensions (mm): 60x30x30

Options: Strain Gauge; Vacuum; Specific Interface

Status: Standard Product

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PPA80XL-imag-small

PPA80XL

Middle size version of the Parallel Pre-stressed Actuator XL series

Stroke: 91µm
Blocked Force: 7000N
Resonance Freq: 8500Hz (unloaded)
Dimensions (mm): 100x30x30

Options: Strain Gauge; Vacuum; Specific Interface

Status: Standard Product

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PPA120XL_Image_small

PPA120XL

Biggest size version of the Parallel Pre-stressed Actuator XL series

Stroke: 128µm
Blocked Force: 7000N
Resonance Freq: 6180Hz (unloaded)
Dimensions (mm): 140x30x30

Options: Strain Gauge; Vacuum; Specific Interface

Status: Standard Product

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