Difference Between Belt Drive And Direct Drive Fans

Belt driven fans offer greater flexibility in terms of rpm speed.

Difference between belt drive and direct drive fans.

In the former the motor connects to the fan wheel with nothing in between. The second pulley is connected to a shaft that drives the fan propeller. Belt drive turntables also have a slightly less accurate playback speed than direct drive turntables. Direct drive or belt drive.

This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating. Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley. 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 our goal with this post is to cover some of the main differences advantages and dis. In a belt driven configuration the motor exists independently of the fan blades and at least one belt sometimes more connects the motor to the fan s moving parts.

It s a motor connected to your fan in one of only two ways. More often than not the maintenance cost of this kind of fan is also comparatively lower. While belt drive turntables are incredibly popular they have a lower torque than direct drive turntables. Belt drive fans have two additional bearings.

On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor. In the later there is a belt sometimes more than one connecting the motor to move the fan. While torque isn t necessarily a critical quality it can be a deal breaker for some. Belt drive turntables by contrast usually take several seconds to get up to speed.

On both direct drive and belt drive fans the motor has two bearings. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. 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. The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable.

There are some advantages and dis advantages direct drive and belt drive exhaust fans and supply fans have over each other. Generally such fans are cheaper than direct drive fans of comparable size. Direct drive fans should be designed for acceptable bearing life.