Belt Driven Fans Vs Direct Drive

On both direct drive and belt drive fans the motor has two bearings.

Belt driven fans vs direct drive.

In the former the motor connects to the fan wheel with nothing in between. Direct drive fans www airdistributor net official blog. Belt drive fans have two additional bearings. It s a motor connected to your fan in one of only two ways.

Direct drive or belt drive. More often than not the maintenance cost of this kind of fan is also comparatively lower. The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable. 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.

Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley. Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft. They re also typically more silent than the alternative. The second pulley is connected to a shaft that drives the fan propeller.

In the later there is a belt sometimes more than one connecting the motor to move the fan. 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 friction between moving parts which can lead to more maintenance and higher energy costs. Generally such fans are cheaper than direct drive fans of comparable size.

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. There are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other. On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor. May 3 2019 fanmann33 8 comments.