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YWF-300 External Rotor Fan | Industrial External Rotor Axial Fan
The Hongbo YWF-300 external rotor fan is a heavy-duty industrial ventilation fan featuring a capacitor-run external rotor motor integrated into the impeller hub. This external rotor fan delivers 1,440–2,242 m³/hr (847–1,320 CFM) with an all-metal iron-leaf impeller and aluminum frame, rated for continuous operation from -10°C to +105°C. It is available in 220V and 380V configurations for industrial power supply compatibility.
Key Features
- External Rotor Motor Design: The motor rotor is integrated into the fan impeller hub, resulting in a compact, efficient design with direct drive and no separate motor housing required.
- All-Metal Construction: Iron-leaf impeller and aluminum alloy frame provide superior durability in high-temperature, high-vibration industrial environments where plastic components would degrade.
- High Airflow 1,440–2,242 m³/hr: Suitable for large industrial enclosures, process equipment rooms, and warehouse ventilation requiring substantial continuous air movement.
- Capacitor-Run Motor: Provides stable torque and consistent RPM under varying load conditions; well-suited for continuous-duty industrial applications.
- Rated to +105°C Operating Temperature: Handles high-ambient installations near furnaces, foundries, transformers, and heavy manufacturing equipment.
- 220V and 380V Availability: Compatible with both single-phase and three-phase industrial power supplies.
- Ball Bearing Construction: Rated for extended service life under sustained high-speed operation in demanding thermal conditions.
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Customization Options
Hongbo Motor supports OEM and ODM orders for this YWF-300 external rotor fan:
- Voltage: 220V, 380V, or dual-voltage configurations
- Speed grade: Multiple RPM configurations available for specific airflow requirements
- Capacitor specification: Matched to voltage and motor type
- Mounting: Flange and bracket configurations for wall, panel, or duct mounting
- Lead wire: Length and connector type to specification
- Packaging and labeling: Custom branding for volume OEM programs
Specifications
| Parameter | Value |
|---|---|
| Model | YWF-300 (300FZL series) |
| Size | 300 mm impeller diameter |
| Voltage | 220V / 380V AC (50/60Hz) |
| Airflow | 1,440–2,242 m³/hr (847–1,320 CFM) |
| Speed | 1,300–2,700 RPM (model dependent) |
| Noise Level | 65–73 dBA |
| Weight | 3,100 g |
| Frame Material | Aluminum alloy (all-metal) |
| Impeller Material | Iron leaf (all-metal) |
| Motor Type | Capacitor-run external rotor induction motor |
| Bearing Type | Ball bearing |
| Operating Temperature | -10°C to +105°C |
Applications
This external rotor fan is widely used in:
- Industrial factory and warehouse ventilation: Provides high-volume exhaust or supply air in large production and storage facilities.
- Power generation and substation cooling: Ventilates transformer rooms, generator housings, and high-power electrical distribution equipment.
- Process equipment cooling: Maintains thermal limits on industrial ovens, furnaces, and heat-treating equipment peripherals.
- Data center and server room ventilation: Supplies exhaust airflow in high-density computing environments with elevated ambient temperatures.
- Commercial kitchen exhaust: Provides grease-resistant ventilation in commercial cooking and food preparation facilities.
- Agricultural and greenhouse ventilation: Maintains climate control in large growing environments and livestock facilities.
Why Choose Hongbo Motor
- Over 10 years of focused experience in industrial cooling fan manufacturing
- Products exported to 40+ countries across North America, South America, Europe, and Asia
- Stable production capacity with consistent lead times
- Strong OEM/ODM capability for volume and custom orders
- Reliable quality backed by international certifications
FAQs
What is an external rotor fan and why use one?
An external rotor fan integrates the motor rotor into the impeller assembly, eliminating the need for a separate motor housing. This design is more compact, reduces mechanical losses, and allows better heat dissipation from the motor windings.
What makes this suitable for high-temperature environments?
The all-metal iron-leaf impeller and aluminum frame, combined with ball bearings rated for high-temperature operation and a motor rated to +105°C ambient, make this fan suitable for installations near heat-generating industrial processes.
What voltage options are available?
Standard models are available in 220V and 380V AC (50/60Hz). Dual-voltage configurations are available on request.
Do you support OEM orders?
Yes. We support customization of voltage, speed, mounting, lead wire, and packaging. Contact our sales team with your specifications.
What is the minimum order quantity?
MOQ varies by model and configuration. Please contact us directly for details.
Certifications and Quality Assurance
- UL Certification
- CE Certification
- RoHS Compliance
- 3C Certification (China Compulsory Certification)
Manufactured and tested at Hongbo Motor’s 6,000 m² facility in Ningbo, China.
