Applications

Fan knowledge



The vibration of the bearing part is very small when the blower starts working, but with the length of the operation time, the dust in the blower will not be attached to the impeller evenly, gradually destroy the dynamic balance of the fan, so that the bearing vibration gradually increased, once the vibration reaches the maximum allowable value of the fan 11mm/s (with the amplitude of the maximum allowable value is as follows), the blower must be shut down repair (clearing dust accumulation, redo dynamic balance). Because this is already very dangerous, the user must not be forcibly used. When the vibration of the blower is approaching the hazard value, the alarm can be detected by the vibration meter.

The maximum allowable value of the vibration of the fan bearing is:

(1) When the bearing vibration velocity is effectively displayed: 11mm/s.

(2) The following values are displayed with the bearing amplitude:

A. Motor synchronous speed of 3000 rpm/time-sharing: Maximum allowable value: 0.1mm (double amplitude)

B. Motor synchronous speed of 1500 rpm/time-sharing: Maximum allowable value: 0.2mm (double amplitude)

C. Motor synchronous speed of 1000 rpm/time-sharing: Maximum allowable value: 0.31mm (double amplitude)

D. Motor synchronous speed of 750 rpm/time-sharing: Maximum allowable value: 0.4mm (double amplitude)

E. Motor synchronous speed of 600 rpm/time-sharing: Maximum allowable value: 0.5mm (double amplitude)

F. Motor synchronous speed of 500 rpm/time-sharing: Maximum allowable value: 0.6mm (double amplitude)