Daikin-McQuay 258981901 Fan Blade

The Daikin-McQuay 258981901 Fan Blade is a heavy-duty condenser fan blade engineered for high-static efficiency in large-tonnage HVAC systems. This 26-inch, 4-blade assembly features a 5/8" bore and is designed for clockwise (CW) rotation. When performing field service on McQuay chillers or Daikin air-cooled units, maintaining precise static pressure and CFM delivery is critical; this OEM replacement ensures the motor maintains the correct amp draw and thermodynamic heat exchange. The axial flow design and rigid blade pitch minimize vibration, protecting the motor bearings and increasing the longevity of the condenser assembly. Technicians can rely on this heavy-duty aluminum fan blade for a direct-fit install, eliminating the balance issues often found with universal aftermarket alternatives. Whether you are addressing HVAC repair needs or conducting preventative maintenance on industrial chillers, this component meets strict OEM specs for airflow performance.

• Optimized Airflow: The 4-blade configuration is pitched specifically for Daikin-McQuay condenser units to ensure maximum BTU rejection.
• Direct Fitment: Features a precision-machined 5/8-inch bore for seamless attachment to standard NEMA motor shafts.
• Industrial Durability: Constructed from high-grade materials to resist corrosion and withstand high-velocity outdoor environments.
• Vibration Reduction: Factory-balanced design prevents premature motor failure and reduces mechanical noise.

What is the rotation direction for the 258981901?
This specific model is a Clockwise (CW) rotation blade, determined by looking at the discharge side of the fan.

Will this work on non-McQuay units?
While it fits a 5/8" shaft, it is optimized for the specific CFM requirements and shroud clearances of Daikin-McQuay equipment. Always verify pitch and diameter before use in other applications.

Why is OEM balance important for condenser fans?
Generic blades often have slight weight variances that lead to harmonic vibration, which can fatigue the motor bracket and lead to refrigerant leaks in the coil.

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.