9566-2-4013 – EBM PAPST

The EBM Papst 9566-2-4013 is an inlet ring component designed for use with a 133mm diameter impeller, typically found in compact axial fan assemblies. Constructed from injection-molded polypropylene (PP), the ring features a profiled aerodynamic inlet designed to optimize airflow into the impeller, reducing turbulence and improving overall fan efficiency. Dimensional tolerances are maintained to +/- 0.15mm to ensure proper impeller clearance and prevent mechanical interference. The mounting interface incorporates four equally spaced, 3.5mm diameter through-holes on a 145mm bolt circle diameter for secure attachment to the fan housing. The inlet ring’s geometry is specifically engineered to minimize inlet losses, contributing to a measurable increase in static pressure performance and a reduction in overall noise generation compared to operation without the inlet ring. The material selection provides resistance to common environmental factors such as humidity and moderate temperature variations.