Engineering Tools

Thermal Derating Calculator

Select from real motor presets (Nanomotion HR/Edge/LS, PI PILine/NEXACT, SmarAct SLC) and PZT materials (PZT-4, 5A, 5H, 8, PICMA). Models power dissipation, temperature rise, frequency shift, force derating, and lifetime using published datasheet specs.

Motor Selection

Motor Preset

Based on Nanomotion HR1 datasheet: 5W max at 280Vrms, 39.6kHz.

Rated Power (W)

Rated Voltage (Vrms)

Drive Frequency (kHz)

Stall Force (N)

Max Velocity (mm/s)

Max Operating Temp (C)

Operating Conditions

Drive Voltage (Vrms)224 V (80% of rated)

0 V336 V

Duty Cycle30%

1%100%

Applied Force (N)1.20 N (30% of stall)

0 N4.0 N (stall)

Velocity (mm/s)125.0 mm/s

Optional. Contributes a small velocity-dependent friction loss term.

Ambient Temperature (C)

Thermal Environment

Cooling Method

h = 5-25 W/(m2 K). No active cooling.

Enclosure

Thermal Resistance Override (C/W) (optional, overrides calculated value)

If you have a measured or datasheet thermal resistance value, enter it here to override the model estimate. This replaces the case-to-ambient resistance only; internal (stator-to-case) resistance is always included.

PZT Material

Curie Temp325 C

Qm400

tan(delta)0.004

Safe Operating160 C

Hard PZT. Low loss, high Qm. Preferred for high-power ultrasonic applications.