Axial drive of centrifugal fans
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There is a centrifugal fan for a boiler; its horizontal and vertical vibrations are within normal limits, but the axial vibration is relatively high, reaching up to 20 mm/s. I checked whether the bearings are damaged – what could be the cause, and how should it be addressed?
Factors such as unbalanced impellers, resonance transmission, and loose bases can all cause vibration in fans