Causes of Vibration in Centrifugal Fans4.0

Causes of Vibration in Centrifugal Fans4.0

There are many causes of vibration in rotating machinery. Let’s take a look at the causes of vibration in centrifugal fans. 4. Motor Foundation Bolts If the motor foundation fasteners are loose, it will cause the motor unit to vibrate, which in turn will loosen other foundation bolts. If the centrifugal fan continues to operate with loose motor foundation bolts, it will cause misalignment between the motor pulley and the drive unit. Pulleys. If the centrifugal fan continues to operate while misaligned, and if the shaft material hardness is below 35 HRC, this can also cause the driven shaft to bend. If the driven shaft bends, significant vibration will be observed if the driven shaft rotates eccentrically due to the bend. The driven shaft will rotate eccentrically only when it has some deflection—or, in other words, when the shaft is slightly bent.