In the former the motor connects to the fan wheel with nothing in between.
Belt drive vs direct drive fan.
The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable.
It s a motor connected to your fan in one of only two ways.
Direct drive fans should be designed for acceptable bearing life.
Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft.
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.
Direct drive or belt drive.
On both direct drive and belt drive fans the motor has two bearings.
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.
In the later there is a belt sometimes more than one connecting the motor to move the fan.
Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss.
Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley.
On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor.
This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating.
Direct drive fans www airdistributor net official blog.
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.
The second pulley is connected to a shaft that drives the fan propeller.
Greater efficiency is the biggest pro of direct drive fan configurations.
May 3 2019 fanmann33 8 comments.
Coming to the advantage of this kind of an industrial fan the biggest advantage is greater efficiency.
This week s podcast is an overview of direct drive vs belt drive fans.
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 are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other.
