Aaon P81880 Blower Shaft

The Aaon P81880 Blower Shaft is a critical precision-engineered component designed for high-static pressure configurations in commercial HVAC systems. Measuring 1.19" in diameter by 23.25" in length, this heavy-duty shaft is built to withstand the rigorous torsional stress associated with large-diameter blower wheels and high-RPM sequences. It is a direct OEM replacement part for specific Aaon air handling units and rooftop systems, ensuring perfect alignment within the bearing assemblies to prevent premature wear or vibration-induced failure. During installation, verify your current blower wheel hub diameter and bearing inner races to ensure a seamless fit. Constructed from high-tensile steel, the P81880 shaft maintains structural integrity across a wide temperature range, making it a reliable solution for technicians performing mechanical overhauls or reactive maintenance on Aaon fan assemblies.

Key Performance Specifications

• OEM Precision: Guaranteed compatibility with Aaon HVAC units requiring a 1-3/16" nominal diameter.
• Durable Construction: High-grade steel prevents shaft bowing and reduces harmonic vibration at high speeds.
• Corrosion Resistance: Finished to resist oxidation, extending the service life of the fan drive assembly.
• Standardized Fit: 1.19" x 23.25" dimensions provide a drop-in replacement for the original Aaon blower shaft.

Common Installation Questions

Is the P81880 compatible with non-Aaon air handlers?
While the dimensions are 1.19" x 23.25", this part is specifically engineered for Aaon blower housings. Cross-referencing the part number against your unit's data plate is essential for proper clearance.

Should I replace the bearings when installing a new shaft?
Yes, veteran techs recommend replacing the pillow block bearings or sleeve bearings whenever a new shaft is installed to prevent scored surfaces from damaging the new component.

What is the torque spec for the set screws on this shaft?
Technicians should refer to the Aaon service manual for the specific blower wheel and bearing lock collar torque requirements to avoid stripping the shaft surface.

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.