External rotor centrifugal fans for refrigeration, HVAC & air curtains. High static pressure, low noise, compact design. 220V/380V, 50/60Hz. OEM & ODM. Free samples.
External rotor centrifugal fan with forward-curved multi-blade impeller and scroll housing. High static pressure, low noise, compact structure. Suitable for refrigeration units, air conditioners, air curtains and ventilation systems. 220V/380V, 50/60Hz. Custom sizes and voltages available. OEM support.
| Parameter | Details |
|---|---|
| Product Type | External Rotor Centrifugal Fan (Scroll Fan) |
| Impeller Type | Forward-curved multi-blade |
| Motor Type | External rotor motor |
| Voltage | 110V / 220V / 230V / 380V AC |
| Frequency | 50/60 Hz |
| Power | 20W – 500W |
| Speed Range | 800 – 2500 RPM |
| Airflow | 100 – 3,000 m³/h |
| Static Pressure | 100 – 800 Pa |
| Noise Level | ≤ 55 dB |
| Protection Class | IP44 / IP54 |
| Insulation Class | Class F (155°C) |
| Bearing Type | Ball bearing, greased for life |
| Housing Material | Galvanized steel / Black powder-coated |
| Thermal Protection | Built-in thermal overload protector |
| Operating Temperature | -30°C to +60°C |
| Application | Refrigeration, HVAC, air curtain, ventilation |
High Static Pressure – Scroll housing and multi-blade impeller generate strong static pressure. Overcomes duct resistance in compact refrigeration systems.
Low Noise Operation – Forward-curved impeller and balanced rotor reduce turbulence and vibration. Suitable for noise-sensitive commercial environments.
Compact Integrated Design – External rotor motor built into the impeller hub. Saves axial space and simplifies installation.
Efficient Motor Cooling – Motor positioned in the air stream for continuous cooling. Extends motor life and maintains stable performance.
Built-in Thermal Protection – Thermal overload protector cuts power when winding temperature exceeds safe limits. Prevents motor burnout.
Wide Voltage & Size Range – 110V to 380V, custom sizes available. Covers small display cases to large commercial refrigeration units.
Stable Bulk Supply – Standard models ship in 15–25 days. Supports rolling replenishment.
OEM & ODM Support – Custom size, voltage, speed, and mounting available. Produced per customer drawings.
Export Packaging – Seaworthy carton and pallet packaging. Suitable for long-distance ocean shipping.
For technical datasheets, samples, or bulk pricing, contact us directly.
Send your specifications (voltage, airflow, static pressure) for a free technical evaluation and quotation within 24 hours. OEM and ODM orders welcome.
