Belt Driven Fans Vs Direct Drive

Belt drive fans have two additional bearings.

Belt driven fans vs direct drive.

Direct drive or belt drive. Belt driven fans offer greater flexibility in terms of rpm speed. On both direct drive and belt drive fans the motor has two bearings. They re also typically more silent than the alternative.

There are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other. Direct drive fans www airdistributor net official blog. The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable. On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor.

More often than not the maintenance cost of this kind of fan is also comparatively lower. More friction between moving parts which can lead to more maintenance and higher energy costs. It s a motor connected to your fan in one of only two ways. 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 have no power transmission loss since the propeller is directly connected to the motor shaft. 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. Generally such fans are cheaper than direct drive fans of comparable size. In the former the motor connects to the fan wheel with nothing in between.

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. 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. Direct drive fans should be designed for acceptable bearing life.