These fans utilize a cross-frame to support American Coolair’s unique bearing and shaft assembly. Power is applied directly to the fan/hub assembly in the same plane as the bearings. This reduces bearing load and dramatically increases fan bearing life. Bearings are permanently lubricated and sealed and have an L10 life exceeding 300,000 hours.
The die-formed steel propeller blades are securely attached to the hub to form a strong, rigid propeller assembly. The motor pulley can be opened to reduce fan speed and decrease air flow on most models. If an increase in fan speed is desired, contact your American Coolair representative for information on fan performance and motor load before making any adjustments.
