Belt Driven Fans Vs Direct Drive

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 vs direct drive.

May 3 2019 fanmann33 8 comments. In the former the motor connects to the fan wheel with nothing in between. On both direct drive and belt drive fans the motor has two bearings. Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft.

In the later there is a belt sometimes more than one connecting the motor to move the fan. The second pulley is connected to a shaft that drives the fan propeller. This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating. Generally such fans are cheaper than direct drive fans of comparable size.

They re also typically more silent than the alternative. Belt drive fans have two additional bearings. The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable. Direct drive or belt drive.

More often than not the maintenance cost of this kind of fan is also comparatively lower. Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley. 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. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss.

Direct drive fans should be designed for acceptable bearing life. Deciding between a direct drive fan and a belt drive fan is fairly straightforward once you know all of your other variables like fan size application space fan speed needs and likely wear and tear in your application. Direct drive fans www airdistributor net official blog. There are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other.