Reznor 45946 Fan Blade

The Reznor 45946 is an industrial-grade 16-inch fan blade engineered for precision performance in commercial HVACR units. This heavy-duty component features a 36-degree pitch and a 4-blade configuration designed to optimize air displacement while maintaining system efficiency. Built for rigorous duty cycles, it operates with a clockwise (CW) rotation and fits a standard 1/2-inch bore motor shaft. As an OEM-spec Brookside SN4-1636 XL170 replacement, this HVAC replacement fan blade ensures exact balance and alignment, reducing vibration and mechanical wear on the motor bearings. Contractors often source this part for Reznor unit heaters where maintaining specific CFM ratings is critical for heat exchanger longevity. Whether you are performing a seasonal overhaul or an emergency repair, utilizing a genuine Reznor fan blade ensures that the equipment operates within its original airflow parameters. The robust metal construction is designed to withstand the high-velocity demands of industrial heating and ventilation environments without pitching or warping.

• Precision Airflow: The 36-degree pitch is specifically calibrated for high-static pressure environments, ensuring consistent CFM output.
• OEM Compatibility: Designed as a direct drop-in replacement for Brookside SN4-1636 XL170, eliminating the need for shaft modifications.
• Vibration Reduction: Factory-balanced 4-blade design minimizes rotational stress, protecting the motor and housing from premature fatigue.
• Durable Construction: Built with industrial-grade metal to maintain structural integrity under continuous thermal cycling.

What is the correct rotation for the Reznor 45946?
This fan blade is designed for clockwise (CW) rotation when viewing the motor from the shaft end. Always verify your motor’s rotation before installation to ensure proper airflow direction across the heat exchanger.

Will this fit any 1/2-inch motor shaft?
While it fits a 1/2-inch bore, it is optimized for Reznor units requiring a 16-inch diameter and a 36-degree pitch. Using an incorrect pitch can overload the motor or under-cool the unit.

How do I identify if I need this specific model?
Check the stamping on your existing blade or consult the unit’s parts list for part number 45946 or the Brookside SN4-1636 XL170 designation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.