Belt Drive Vs Direct Drive Fan

It s a motor connected to your fan in one of only two ways.

Belt drive vs direct drive fan.

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. In the former the motor connects to the fan wheel with nothing in between. Direct drive or belt drive.

Coming to the advantage of this kind of an industrial fan the biggest advantage is greater efficiency. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. Extreme hot cold dirty or humid conditions may favor a direct drive fan as it reduces the environmental impact on the drive belts and fan bearings. There s also no belt residue and these fans cost less to maintain generally speaking because belts don t wear down and break.

Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley. Unlike belt driven fans there s less energy loss because there s a reduced amount of friction as the fan operates. Belt drive fans have two additional bearings. Greater efficiency is the biggest pro of direct drive fan configurations.

There are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other. The second pulley is connected to a shaft that drives the fan propeller. This week s podcast is an overview of direct drive vs belt drive fans. The environmental conditions in which the fan is installed may dictate a preference toward a belt or direct drive fan.

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. 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 should be designed for acceptable bearing life. The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable.

Belt drive vs direct drive largest fan blower factory in china direct drive is more typical on smaller blowers and generally offers lower cost fewer components to assemble greater efficiency no drive losses reduced maintenance no separate bearings or belts and greater reliability. On both direct drive and belt drive fans the motor has two bearings. In the later there is a belt sometimes more than one connecting the motor to move the fan.