Axial vibration in centrifugal fans may be stimulated by a variety of underlying factors, details of which encompass but are not restricted to the following:

1. Imbalance: Imbalance within fan impellers or other rotating components may serve as one of the key precipitators of axial vibration. This imbalance can induce vibrations for rotating components during operation and consequently triggers axial vibration.

2. Bearing concern: Malfunctioning bearings or excessive wear may impartaxial vibration. When internal damage or insufficient lubrication occurs within bearings, the axial vibration of the fan may intensify.

3. Tractive imbalances: If the axial force is unbalanced within the fan’s rotor or bearing assembly, it might instigate an axial vibration issue.

4. Axial clearance: Inappropriate axial clearance or installation issues with axial parts could engender axial vibration, potentially linked to poor axial sealing or loose assembly.

5. Deposits accumulation: Dust, dirt, or other deposits that accumulate on the fan impeller or bearing may also incite axial vibration.

In addressing the issue of axial vibration, methods such as balancing correction, scrutinizing bearing conditions, adjusting axial traction, and removing deposits can be contemplated. Moreover, regular maintenance and inspection of the fan can aid in mitigating the occurrence of axial vibration.