Piezoceramics – diversity in shape
The production and forming processes used in the manufacture of piezoceramic parts are as diverse as their applications and the associated suitability criteria.
Typical shapes include disks, rectangular plates, rods, rings, cylinders, tubes, spheres and semi-spheres.
Piezoceramic components
Actuators
Piezoceramic tapes
| Shape | Typical dimensions 1) |
|---|---|
| Rings and disks | Diameter: 5 mm – 120 mm Thickness: 0.2 mm – 30 mm |
| Cylinders | Diameter: 5 mm – 120 mm Height: < 30 mm |
| Rectangular plates | Length: 3 mm – 120 mm Width: 2 mm – 120 mm Height: 0,2 mm – 30 mm |
| Monolithic multilayer actuators (special brochure available) |
Length: 5 mm – 10 mm Width: 2 mm – 10 mm Height: 10 mm – 40 mm Number of ceramic layers: 100 – 400 |
| Semispherical bodies | Radius: up to about 25 mm |
| Standard tolerances | ± 1 % of the respective dimension ± 0,05 mm thickness tolerance on ground products ± 0,1 mm on unmachined products not exceeding 10 mm in thickness ± 10 % in case of specified resonance frequency 2) |
1) Reference values which may be higher or lower on actual product, depending on agreement with
the customer.
2) In some resonant applications it has become standard practice to specify the resonance frequency
(defined via the frequency constant) instead of a mechanical dimension.
Example: Disk made of SONOX® P4 ∅ 20 mm ± 0.2 mm x 1 MHz ± 10%.
1 MHz is the resonance frequency of the thickness-mode oscillation of the disk, corresponding to a disk
thickness of approximately 1 mm (refer also to the data charts and glossary section for explanations).