Belt Driven Fan Vibration

Vibration analysis is a condition monitoring test which is widely applied for determining the operating condition of any rotating machine for example centrifugal fan.

Belt driven fan vibration.

Both axial readings were in phase at running speed as determined by cross channel phase readings. Loosening of hardware on the fan or deterioration of the structure and hardware supporting the fan. It can be confirmed by measuring phase in the axial direction at fan speed. It is important to realize that some of the belt drive vibration problems listed above do not cause vibration at belt related frequencies.

While belts require very little maintenance improper belt tension misalignment of pulleys mishandling of belts and environmental factors are common problems that can shorten the life of your belts and bring your system to a halt. Fatigue type failure in fan components due to continued exposure to abnormal loads or vibration. This vibration pattern is not typical for a belt drive. Most vibration was at the fan shaft rotational frequency.

Sheave misalignment is a very common problem with belt driven fans. In this report we will have to discuss problem of vibration for one centrifugal fan with the help of the vibration analysis technique. Belt drive problems and drive misalignment. Fan wheels may not be perfectly symmetric and may become out of balance due to a change in.

When it is present the vibration at fan speed is typically the highest vibration peak in spectra taken on the motor. Problems due to the shafts or pulleys misalignment eccentricity etc cause vibration at 1x rpm of the component with the problem i e.