Precision Centrifugal Fan Impeller

We provide 2D/3D drawings detailing blade curvature, hub bore diameter, and dynamic balance grades to facilitate the evaluation of machining solutions for these multi-backward centrifugal impellers. The component consists of a central mounting flange and densely distributed curved blades. Its specific aerodynamic profile ensures efficient airflow delivery, making it a core power module widely used in industrial dust collection systems, HVAC units, drying equipment, and various fluid machinery.

The manufacturing core lies in ensuring the angular consistency of the blade array and the overall dynamic balance performance. Strict control is maintained over the coaxiality of the hub center hole relative to the outer circle, as well as the connection strength at the base of each blade. This prevents deformation or fatigue fracture caused by centrifugal forces during high-speed rotation. For the thin-walled blade features shown, specialized fixtures are employed during machining to suppress cutting stress deformation, ensuring the surface finish of the impeller flow channels meets fluid dynamics requirements.

Leveraging our precision machining and sheet metal fabrication capabilities at our Shenzhen and Dongguan facilities, we undertake custom production of impellers in materials such as aluminum alloy and stainless steel. Equipped with vertical machining centers and Coordinate Measuring Machines (CMM), we perform high-precision milling of complex surface contours and conduct full inspection of critical dimensions. For scenarios with strict noise control or corrosion resistance requirements, we combine surface treatments such as anodizing, sandblasting, or electroless nickel plating to meet diverse needs from single-piece prototyping to batch delivery.