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.
Direct drive vs belt drive fan motor.
The second pulley is connected to a shaft that drives the fan propeller.
The motor that drives the belt is positioned off to the side.
It s incredibly hard to balance a belt and pulley system personally i would skip psc motors and look into direct drive ecm.
Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft.
As the motor operates and turns the shaft the fan moves accordingly.
A direct drive turntable features quick start up times slightly more consistent speed and stronger torque.
This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating.
On a direct drive fan as implied by the name the fan propeller is connected directly to the shaft of the motor.
In the case of direct drive designs the platter sits directly on the motor.
However a belt drive fan has power transmission loss due to the friction between.
On both direct drive and belt drive fans the motor has two bearings.
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.
The two bearings on direct drive fan motors which are 7 horsepower and larger are typically regreaseable.
The direct drive turntable meanwhile features a platter which is directly attached to the player s motor.
The key difference is how the motor drives the record platter.
Direct drive fans should be designed for acceptable bearing life.
An hvac system with a belt drive fan is slightly different.
It s balance or lack of balance actually which causes most of the noise.
A heating ventilation and air conditioning system with a direct drive blower is when the blower motor is connected directly to the fan.
It s more expensive but lasts longer quieter and offers better control.
Where on a belt drive fan the fan motor shaft has a pulley connected by a belt to a second pulley.
Belt drive elastic can wear down and it can eventually break.
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.
Coming to the advantage of this kind of an industrial fan the biggest advantage is greater efficiency.
The direct drive turntable.
Greater efficiency is the biggest pro of direct drive fan configurations.
Belt drive fans have two additional bearings.
A well balanced direct drive is far quieter than belt.
A belt driven turntable uses a belt to move the platter.
