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YWF-400 External Rotor Axial Fan | 400mm Industrial Ventilation Fan
The Hongbo YWF-400 external rotor axial fan is a large-diameter, high-capacity industrial ventilation fan designed for maximum airflow in demanding commercial and industrial environments. This external rotor axial fan delivers 1,440–2,242 m³/hr (847–1,320 CFM) through an all-metal iron-leaf impeller and aluminum frame, driven by a capacitor-run external rotor induction motor rated for operation up to +105°C. The 400mm blade diameter provides the highest volumetric airflow in the YWF series for large-scale ventilation requirements.
Key Features
- Large 400mm Blade Diameter: The largest format in the YWF external rotor series; delivers maximum volumetric airflow for expansive industrial spaces and high-heat applications.
- External Rotor Motor Integration: Motor rotor forms part of the impeller hub, creating a compact, direct-drive assembly with efficient power transfer and minimal mechanical losses.
- All-Metal Iron-Leaf Impeller: Provides structural strength and heat resistance for continuous operation in high-temperature industrial environments.
- High-Capacity Airflow 1,440–2,242 m³/hr: Suitable for large warehouses, manufacturing facilities, and power equipment rooms requiring substantial continuous ventilation.
- Rated to +105°C Operating Temperature: Operates reliably in high-ambient conditions including furnace rooms, foundries, and transformer stations.
- 220V and 380V Configurations: Compatible with single-phase and three-phase industrial power supplies for global deployment.
- Ball Bearing Construction: Supports extended service life under continuous high-speed operation in thermally challenging environments.
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Customization Options
Hongbo Motor supports OEM and ODM orders for this YWF-400 external rotor axial fan:
- Voltage: 220V, 380V, or dual-voltage; single-phase or three-phase
- Speed grade: Multiple RPM configurations for targeted airflow and noise levels
- Capacitor specification: Matched to voltage and motor configuration
- Mounting: Flange, bracket, or wall-mount configurations for OEM integration
- Lead wire: Length and connector type to specification
- Packaging and labeling: Custom branding for volume OEM programs
Specifications
| Parameter | Value |
|---|---|
| Model | YWF-400 |
| Size | 400 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 axial fan is widely used in:
- Large industrial warehouses and distribution centers: Provides high-volume air movement for temperature control and air quality management in expansive storage facilities.
- Manufacturing and processing plants: Ventilates production areas with high ambient heat from machinery, welding, and process equipment.
- Power generation and electrical substations: Cools large transformer installations, switchgear rooms, and power conversion equipment.
- Agricultural and livestock facilities: Maintains climate control in large barns, greenhouses, and animal housing requiring substantial ventilation.
- Commercial kitchens and food processing: Provides grease-resistant, high-volume exhaust ventilation in large-scale food preparation facilities.
- Data centers and telecom facilities: Supplies high-capacity exhaust airflow in high-density computing environments.
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 the difference between the YWF-400 and smaller YWF models?
The YWF-400 uses a larger 400mm impeller diameter, providing the highest volumetric airflow in the YWF series. It is suited for the largest ventilation applications where maximum air movement is required.
Is this fan suitable for outdoor installation?
The standard YWF-400 is designed for indoor industrial environments. For outdoor installations, additional weather protection or a specialized outdoor-rated version may be required. Contact us for outdoor-rated options.
What voltage configurations are available?
Standard models are available in 220V and 380V AC. 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.
