Belt Driven Fans Vs Direct Drive

More friction between moving parts which can lead to more maintenance and higher energy costs.

Belt driven fans vs direct drive.

The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable. Either of these motor mount options can typically be found in wall mount exhaust and supply fans roof mount exhaust and supply fans inline duct fans and air circulation products. The second pulley is connected to a shaft that drives the fan propeller. Generally such fans are cheaper than direct drive fans of comparable size.

It s a motor connected to your fan in one of only two ways. On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor. Belt driven fans offer greater flexibility in terms of rpm speed. Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft.

There are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. May 3 2019 fanmann33 8 comments. Belt drive fans have two additional bearings.

In the former the motor connects to the fan wheel with nothing in between. Direct drive fans should be designed for acceptable bearing life. They re also typically more silent than the alternative. Direct drive or belt drive.

This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating. More often than not the maintenance cost of this kind of fan is also comparatively lower. In the later there is a belt sometimes more than one connecting the motor to move the fan. On both direct drive and belt drive fans the motor has two bearings.