Structure Type: Cantilever design with a belt drive mechanism. The pulley is mounted on the outer sides of two supporting bearings, and the impeller is cantilever-mounted on the opposite end of the shaft.
Advantages: Wide range of selectable fan speeds.
Flow rate closely matches application needs.
Flexible motor installation position.
Easy removal of the pulley.
Compact footprint.
Disadvantages: Relatively low mechanical efficiency.
Belt drive requires tension, adding extra lateral force to the fan's shaft end. More components prone to damage.
Higher frequency of maintenance and replacement.
Main Applications: Suitable for medium to large fans with significant performance variation.
