Project Scope and OEM Tooling Requirement
On July 25, 2026, LONGWELL opened a project to address an inquiry for axial fan impeller model LWA-φ406×96-04. The customer requested both product specifications and injection mold tooling evaluation for producing the impeller at their own facility.
Technical Drawing and Impeller Specifications
LONGWELL engineering prepared the standard technical drawing and specifications for model LWA-φ406×96-04 on July 25, 2026. The drawing outlines key physical dimensions and material guidelines for fit and performance evaluation.
| Parameter | Specification Value |
|---|---|
| Model Designation | LWA-φ406×96-04 |
| Material Standard | AS+GF |
| Outer Blade Diameter | 406 mm |
| Total Impeller Depth | 96 ±1.3 mm |
| Shaft Bore Diameter | 12 (+0.05 / +0) mm |
| Dimensional Standard | GB/T 14486-93 |
The technical drawing specifies that the axial fan surface must remain clean, smooth, free of voids, consistent in luster, and without deformation, stains, or burrs.
Engineering Deliverables
LONGWELL completed the technical drawing (LWA-φ406×96-04.pdf) and established the standard specification for customer evaluation. The output provides the precise mechanical dimensions required to review housing compatibility and tooling requirements.
Discuss a Similar Requirement
If you are evaluating axial fan impellers or require dedicated tooling for custom HVAC fan production, contact our engineering team to review design specifications, shaft dimensions, and material selections.
Contact LONGWELL Engineering or explore options on the LONGWELL Fan Selection Platform.
Choose the right fan impeller
Longwell manufactures 10 fan impellers in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.
