dm1 is specially designed for the demands of high frequency vibration calibration and testing. Due to its unique electrodynamic drive technology dm1 archieves high force and thus acceleration rating. A special designed membrane bearing system combines the perfomance needed for high class calibration and the robustness for testing without the need of compressed air. The technical ceramic used to make the armature of the shaker is responsible for the broad frequency range up to 50 kHz and the robustness against wear.