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NA-25, NA-80 Preloaded Piezoelectric Actuators
 Description
DSM's NA-25 and NA-80 actuators are direct-drive piezoelectric actuators integrated into a protective metallic frame. The frame is a monolithic piece of stainless steel or titanium alloy with a flexure-based expansion component. The flexure minimizes the resistance that the frame might impart to the piezoelectric actuation. The frame also includes standard threaded receiver holes at the top and bottom and incorporates a preload mechanism. The mechanical preload maintains compression on the piezoelectric ceramic under high tensile forces and ensures bidirectional operation. The design thus provides increased resilience to mechanical loads when compared to non-preloaded actuators. The NA-25 and NA 80 are well-suited to many applications where high force and high frequency response are required.
Download PDF Brochure for the NA-25, NA-80 preloaded piezoelectric actuators
Models
The actuators are generally manufactured with low voltage (150V) piezo material, but other piezo materials and voltages are available by request. NA actuator models are available that can accommodate a 500-1500 N tensile force on the output of the actuator. Titanium and stainless steel materials are available. Higher forces and strokes can also be accommodated by increasing the size of the piezoelectric core material.
Specifications
| Property |
NA-25 |
NA-80 |
| Stroke (µm) ± 10%: |
25 |
80 |
| Stiffness (N/ µm) ± 10%: |
60 |
18 |
| Unloaded Fixed Free Resonant Frequency (kHz): |
> 8 |
> 4.5 |
| Blocked Force Estimate (N): |
1800 |
1400 |
| Tension Preload Options: |
500 to 1500 N |
| NA-25 Dimensions: |
0.43" x 0.50" x 1.06" |
| NA-80 Dimensions: |
0.5" x 0.5" x 2.9" |
Custom Actuators
The NA architecture can be readily adapted and scaled to other force and stroke ranges.
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