Direct Drive Vs Belt Drive Fan

The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable.

Direct drive vs belt drive fan. The second pulley is connected to a shaft that drives the fan propeller. Because of the fewer parts involved they can often be more compact in design. Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft. On both direct drive and belt drive fans the motor has two bearings.

The environmental conditions in which the fan is installed may dictate a preference toward a belt or direct drive fan. There s also no belt residue and these fans cost less to maintain generally speaking because belts don t wear down and break. In the later there is a belt sometimes more than one connecting the motor to move the fan. Belt drive fans have two additional bearings.

Direct drive or belt drive. Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley. Direct drive advantages direct drive fans are typically lower maintenance since there are no bearings belts or sheaves to maintain. It s a motor connected to your fan in one of only two ways.

In the former the motor connects to the fan wheel with nothing in between. Direct drive fans should be designed for acceptable bearing life. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. Greater efficiency is the biggest pro of direct drive fan configurations.

On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor. Unlike belt driven fans there s less energy loss because there s a reduced amount of friction as the fan operates. Coming to the advantage of this kind of an industrial fan the biggest advantage is greater efficiency.