On August 7, 2026, LONGWELL opened a project to prepare technical specifications for cylindrical AC axial fan configurations based on requirements for models LWAA4D450S-5MEB-32 and LWAA2D400S-5MEB-28. Engineering assigned part numbers LWAA2D400S-5MYB-28-00 and LWAA4D450S-5MYB-32-00 for the 400 mm and 450 mm models.
Documented Engineering Specifications
The standard technical specifications detail the nominal operating parameters, electrical inputs, and physical housing dimensions for both cylindrical AC axial fan models:
| Parameter / Feature | LWAA2D400S-5MYB-28-00 | LWAA4D450S-5MYB-32-00 |
|---|---|---|
| Nominal Voltage | 380 VAC (342~418 VAC) | 380 VAC (342~418 VAC) |
| Frequency | 50 Hz | 50 Hz |
| Speed | 2350 rpm | 1390 rpm |
| Power Input / Current | 450 W / 2.2 A | 260 W / 0.55 A |
| Maximum Air Flow | 5253 m³/h (3090 CFM) | 5583 m³/h (3284 CFM) |
| Noise Level (LpA) | 85 dB(A) | 69 dB(A) |
| Impeller Material | Cold-rolled sheet | Cold-rolled sheet |
| Protection / Insulation Class | IP54 / Class F | IP54 / Class F |
| Operating Temperature Range | -30 to 60 °C | -30 to 60 °C |
Technical Drawings & Reference Documentation
Technical specifications and dimensional drawings are available for download:
- Download LWAA2D400S-5MYB-28-00 Technical Specification (PDF)
- Download LWAA4D450S-5MYB-32-00 Technical Specification (PDF)
Engineering Scope
The scope encompasses the completed specification drawings and technical documentation for fit and performance evaluation.
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To evaluate a cylindrical AC axial fan design for your equipment, submit your specific application details including required airflow, operating voltage, mounting dimensions, and operating conditions at our contact page or explore models on the LONGWELL Fan Selector Tool.
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