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Piezo ceramic ring stack、low power consumption、blocking force to 8000N

Type：HPSt150/20-15/x

Material Properties

Material: PZT(PZT5H)

Rel. dielectric constant εref: 5400

Loss factor: 200×10-4 

Coupling factor: KP=0.62, K31=0.34, K33=0.68

Piezo coefficient: d31=-290pm/V, d33=+635pm/V

Elast.compliance: S33E =18.1×10-12m²/N, S11E =14.8×10-12m²/N

Frequency constant: Radial=2040m/sec, Thickness=1800m/sec,

Transverse=1410m/sec,

Longitudinal=1370m/sec

Quality factor(resonance): 70

Density: 8g/cm³

Curie temperature: 150°C

Specific heat: 380Ws/°K kg

Thermal conductivity: ca.1.5 Ws/m·K(axial direction)

Above-mentioned parameters can vary significantly with the

operating electrical field strength.

Temperature

Operating temperature: -50~+100°C(according to resin). If >100°C, PZT performance will be reduced reversibly Above Curie temperature, piezo actuators will be permanently depolarized.

Technical data 

Eg：HPSt150/20-15/25

Max./Stroke[μm]±15%：32/25

El. capacitance [μF]±20%：10

Stiffness [N/μm]±20%：230

Resonant frequency [kHz]±20%：22

Blocking Force [N]：8000