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Modal Shaker


Modal shakers are used in the study of vibration behavior of structures. No test specimen is mounted on such shakers. These shakers are mounted to the structure with a stinger and force is transferred from the shaker to the structure via this stinger. The structure under test and / or the modal shaker can be hung with components such as an elastic rope or spring during the test to simulate free-free boundary conditions. In this way it is possible to excite the test sample at different frequencies. As a result, the natural frequencies and mode shapes of the structure can be calculated with the vibration values ​​measured over the structure.

The latest version of our permanent magnet shakers PM-20, PM-100 and modal shaker MS-20, MS-100 have an integrated amplifier and a internal signal generator. By having integrated amplifiers, these shakers will help test engineers to setup their test easily. All these 4 shakers will also have an improved signal generator with a wider range than the previous one. New signal generator can generate Sinus signals from 1 Hz to 15,000 Hz. Also, all 4 models will have a screen which shows the internally generated sinus signal frequency.


  • Modal stinger can be easily adjusted by the through-hole armature
  • Lightweight and portable
  • Forced air cooling is used to meet full shaker performance (440N pk) specifications.
  • Adjustable trunnion base provides high flexibility
  • 25mm stroke and broad frequency range

Technical Specifications

Model MS-20 MS-100 MS-250 MS-440
Output Force (Sinus) 20 N 100 N 250 N 440 N
Frequency range 0 – 15 kHz 0 – 10 kHz 0 – 5 kHz 0 – 5 kHz
Displacement (Peak to Peak) 5 mm 10 mm 25 mm 25 mm
Max Acceleration 40 g 60 g 100 g 100 g
Total mass 4.1 kg 9 kg 15 kg 15 kg
AMPLIFIER Integrated Integrated External External
Cooling system Air convection Air convection Forced Air Forced Air
Suspension Spring Spring Spring Spring
Max. Input Current 4A 6A 10A 10A
Input Voltage 1 VAC 1 VAC 10 VAC 10 VAC

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