Ducted Centrifugal Fan Motor

The Imperative: Generating Sustained High Static Pressure to Drive Airflow Through Long, Complex Duct Runs

The Ducted Centrifugal Fan Motor is the definitive drive solution for inline ventilation and exhaust systems that must generate high airflow volumes while successfully overcoming the substantial resistance (static pressure) inherent in long or circuitous ductwork. This motor type is essential for commercial kitchens, bathrooms in high-rise buildings, and industrial process ventilation where air must be moved over significant distances or through restrictive filters. Our portfolio includes rugged AC Induction motors and highly efficient BLDC/EC Inverter motors, all specifically engineered to maintain their performance integrity under pressure load, guaranteeing effective air exchange.

Centrifugal fans are ideally suited for high-pressure environments, and our motors are designed to exploit this characteristic fully. They deliver superior torque across the operational range, preventing the fan from stalling or dramatically reducing its flow rate when faced with sudden increases in duct resistance (e.g., when a fire damper closes partially or filters clog). For systems requiring precise and variable airflow, our EC (Electronically Commutated) motors provide stepless speed control, enabling the system to precisely modulate fan output. This capability ensures the maintenance of target pressure setpoints or variable flow rates, a key requirement for controlled environments like laboratories and cleanrooms where precise airflow is non-negotiable.

Installation flexibility is critical for ducted systems. Our motors are designed for compact, inline integration, often housed within the fan scroll itself. They are engineered for low vibration, utilizing precision-machined shaft and bearing systems to minimize noise transmission through the ductwork, a common challenge in residential or commercial ventilation. The high-durability construction, often featuring IP44 or higher protection, ensures the motor's longevity and reliability, even when exposed to moisture or temperature fluctuations typical of ceiling plenums or external duct runs.

We offer extensive support for both the motor and the integrated control system. For EC models, we provide intelligent control boards that can interface directly with external sensors or pressure transducers, allowing the fan to operate in constant pressure mode—a highly desirable feature that automatically adjusts speed to maintain a fixed static pressure. Whether your application is a simple, heavy-duty exhaust fan powered by an AC motor or a complex, electronically controlled cleanroom air supply system, our Ducted Centrifugal Fan Motors provide the reliable, high-pressure power and control needed to ensure effective, standards-compliant ducted ventilation.

Key Product Strengths:

• High Pressure Capability: Engineered to maintain high airflow volume against the static pressure of long or restrictive duct runs.
• Constant Pressure Mode: EC controllers enable automatic speed adjustment to maintain a user-defined pressure setpoint.
• Inline Compactness: Motors are designed for minimal axial length to facilitate easy installation within ductwork runs.
• Vibration Damping: Optimized mounting and precision balancing minimize vibration transmission into the building structure.
• Robust Construction: High IP ratings and durable bearing systems ensure longevity in concealed, inaccessible installations.

To discuss the constant pressure and duct resistance requirements for your next inline ventilation project, please contact our centrifugal motor engineering team for tailored power and control solutions.