Direct Drive Vs Belt Drive Fan Motor

The key difference is how the motor drives the record platter.

Direct drive vs belt drive fan motor.

Coming to the advantage of this kind of an industrial fan the biggest advantage is greater efficiency. A direct drive turntable features quick start up times slightly more consistent speed and stronger torque. As the motor operates and turns the shaft the fan moves accordingly. A heating ventilation and air conditioning system with a direct drive blower is when the blower motor is connected directly to the fan.

Direct drive fans should be designed for acceptable bearing life. The direct drive turntable. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. The direct drive turntable meanwhile features a platter which is directly attached to the player s motor.

This type of fan arrangement is more compact so it can often fit into a smaller space with the wheel either mounted on the motor shaft or directly coupled to the motor shaft. A belt driven turntable uses a belt to move the platter. It s more expensive but lasts longer quieter and offers better control. On both direct drive and belt drive fans the motor has two bearings.

Belt drive elastic can wear down and it can eventually break. Greater efficiency is the biggest pro of direct drive fan configurations. An hvac system with a belt drive fan is slightly different. Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft.

In the case of direct drive designs the platter sits directly on the motor. A well balanced direct drive is far quieter than belt. However a belt drive fan has power transmission loss due to the friction between. On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor.

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. The second pulley is connected to a shaft that drives the fan propeller. This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating.

The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable. Thus the fan blades will rotate at the same speed as the motor rotates. In a direct drive configuration the fan motor that controls the movement of the fan blades is connected either to a shaft or fan axle. Belt drive fans have two additional bearings.

When compared to belt drive fans which require belts sheaves and bushings direct drive is just plain simpler and maintenance folks tend to lean toward direct drive for daily maintenance.