MB Modal Exciters

MB Modal Exciters – Ideally suited for experimental modal analysis

Modal shakers are used for local excitation of different structures to identify a structure´s modal properties such as natural frequencies, mode shapes, stiffness and damping. In contrast to classical shaker systems, modal shakers do not have a mounting table for fixing the test specimens. The connection to the structure is made via a pre-loaded piano wire or a stinger. Properly-featured modal exciters and amplifiers are critical to acquiring good experimental modal data and valid frequency response functions. In order to minimize the influence of the modal shaker on the structural resonances, these shaker systems are equipped with extremely lightweight moving elements. The axial stiffness of the suspension guiduing the moving element is also reduced to a minimum.

Extensive system accessories such as stingers in various diameters and lengths, chucks, additional weights and suitable sensors facilitate the connection of the vibration exciters to the structure to be investigated. Contact us to learn more about our Modal Exciters…

Modal 50Modal 110Modal 250Modal 500
Max. dynamic Force


220N peak500N peak1000N peak2000N peak


110N rms250N rms500N rms1000N rms
Max. Displacement25mm pk-pk38mm pk-pk50mm pk-pk50mm pk-pk
Frequency RangeDC-5000Hz, nutzbar bis 1000HzDC-5000Hz, nutzbar bis 1000HzDC-3000Hz, nutzbar bis 1000HzDC-3000Hz, nutzbar bis 1000Hz
Weight Moving Element0,15kg0,6kg1,4kg3kg
Connection to StructureWire or StingerWire or StingerStingerStinger
AttachmentClamping ChuckClamping ChuckThreadThread
Integrierte Kühlungoptional, external bloweroptional, external bloweroptional, external bloweroptional, external blower
Overtravel Protection-optionalYesYes
Overtemp Protection-optionalYesYes
Weight, includuing Trunnion Base25kg22kg115kg205kg
Recommended AmplifierMB 500VIMB 500VIMB 1000VIPVL-Serie
  • Stinger clearance holes through the exciter armature for easy set-up.
  • Collet chuck to quickly grip a smooth stinger without cutting one to a precise length.
  • Lightweight armature that doesn’t mass load the test item.
  • Weak armature suspension that doesn’t apply additional forces to the test item.
  • Long strokes up to 50mm for flexible structures and low frequency “suspended shaker” tests.
  • Thin stingers (including piano wire) decouples force inputs in all directions except the driven axis – avoids “cross axis” error in force measurement.
  • Broad usable frequency range (DC-3000+ Hz) handles almost every modal survey.
  • Uses permantent magnets to create a static magnetic field.
  • No DC Field Coils -> Lower electrical poer dissipation and less heating
  • Amplfiers with voltage and current feedback
  • Amplifiers can be remotely operated over Ethernet network
  • Modal analysis / modal testing

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