Nidec-US Motors 1864 Motor

The Nidec-US Motors 1864 is a professional-grade 1/3 HP blower motor designed for high-performance service in residential and commercial direct-drive fan and blower applications. Operating at 115V and 1075 RPM, this PSC motor (Permanent Split Capacitor) features 3-speed taps, allowing for precise airflow adjustment based on system static pressure requirements. Built on a 48Y NEMA frame, it offers a 5.6-inch diameter chassis with a versatile 1/2" diameter by 5" long shaft, supporting stud, band, or hub mounting configurations. Engineered for reliability, the Open Air Over (OAO) enclosure ensures maximum heat dissipation during continuous duty, while the self-aligning ball bearings provide multi-angle mounting flexibility. This motor is the direct technical replacement for US Motors D727 and 100131, making it a critical stock item for furnace and air handler repairs.

• Universal Compatibility: Direct drop-in replacement for D727 and 100131 models with a reversible rotation feature to match any blower wheel direction.
• Enhanced Thermal Protection: Equipped with an automatic reset thermal overload protector to prevent winding failure during high-ambient conditions or restricted airflow.
• Precision Speed Control: 3-speed 1075 RPM design provides flexibility to optimize CFM for heating and cooling cycles.
• Rugged Componentry: Features high-grade self-aligning ball bearings and Class B insulation rated for 40°C ambient environments.
• Flexible Installation: The 48-frame housing includes extended mounting studs and is compatible with belly band or hub-ring mounts.

Common Questions & Troubleshooting

What capacitor is required for the Nidec 1864?
This motor typically requires a 7.5 MFD / 370V capacitor. Always verify the microfarad rating on the motor nameplate before installation to ensure the direct drive motor starts efficiently and runs within the rated 5.0 Amps.

How do I change the rotation of the motor?
The 1864 motor is reversibly rotatable. Simply swap the two lead connectors as indicated on the wiring diagram located on the motor housing to switch between CW and CCW rotation.

Can this motor be used in a condenser fan application?
No, this is an Open Air Over (OAO) motor designed for indoor use within a furnace or air handler. For outdoor HVAC replacement motors, you must use a Totally Enclosed (TEAO) motor to prevent moisture from damaging the internal windings.

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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.