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  1. RRUUEE

    high vibrations synchronous motor under reciprocating loads

    During operation we experienced high vibration on the pedestal at nde side on new installed 6MW Motor, single bearing type, running speed 450RPM. Harmonic spectrum showed peeks at 7.5 and 22.5Hz that can be explained by bending exciatation 1st and 3rd Order. The calculated bending frequency of...

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