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  • Users: FRANKOK
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  1. FRANKOK

    Pinion Gear Second Critical at 2X

    Pinion is in a VFD motor driven double helical gear with upmesh speed increaser driving a compressor. As for many similar designs the first lateral critical speed is above operating speed. However there is a large 2X amplitude peak mainly on the coupling end when speed is at 1/2 the calculated...

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