Bi-Axial Seismic Exciter


Custom Solutions, Tire, Other


Test Equipment

Test Type

Performance, Durability, Noise, Vibration, & Harshness, Structural Fatigue

Bi-Axial Seismic Exciter


The LINK Bi-Axial Seismic Exciter is designed to accurately reproduce seismic events. Horizontal and vertical tests can be run independently by rotating the actuator.  This provides a cost effective solution for performing statistically independent motions in the X,Y,Z directions without off-axis motion concerns.


  • Seismic
  • Packaging
  • Electrical component


  • Table sizes include:
    • 600mm x 600mm  (24” x 24”)
    • 800mm x 800mm (31.5” X 31.5”)
    • 1M X 1M  (39.5” X 39.5”)
    • 1.5M x 1.5M (59” x 59”)
    • Other table sizes upon request
  • Frequency range: 0.1 to 100 Hz, or greater upon request
  • Hydrostatic Bearing Actuator
  • Seismic Accelerometer

Key Benefits

  • Special low noise linear bearings provide a rigid bearing structure without the expense and maintenance of hydrostatic bearings
  • Sine sweep: operator defined frequency range and linear or logarithmic rate, with defined acceleration level
  • Linear Bearing  design provides high resistance to over-turning moments, preventing off-axis motion
  • Designed for attachment to customer seismic mass.  Varying sizes available with seismic mass
  • Low friction linear bearings and hydrostatic bearing actuator provide reduced harmonic distortion
  • Shipped as an integrated system reducing installation time

Test Procedures

  • IEEE-344 IEEE Recommended Practice for Seismic Qualification of Class 1E Equipment for Nuclear Power Generating Stations
  • IEEE-682
  • GR-63 Tests

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