Nidec-US Motors 8431 Condenser Motor

When you're spec-ing out a high-demand commercial unit, the Nidec-US Motors 8431 Condenser Motor is a workhorse designed for HVACR professionals who need reliable 1075 RPM performance. This 1HP motor features a 56YZ NEMA Frame Size and is engineered as a Permanent Split Capacitor Motor, providing the high-torque reliability required for condenser fan motor replacement in heavy-duty environments. Built with a 6.5-inch diameter and an Open Air Over (OAO) enclosure, this motor ensures maximum heat dissipation during continuous duty. The 208-230/460Vac dual-voltage rating and single phase operation make it a versatile choice for a wide range of rooftop and ground-level commercial condensers. With 5.8-5.4/2.7 Amps draw and Class B insulation, this motor is built for long-term service in ambient temperatures up to 60°C. Mounting is straightforward with hub or stud mount options, and the double sealed ball bearings allow for all-angle installation, which is critical when dealing with diverse HVAC maintenance requirements and motor cross-reference matching.

• Universal Voltage Compatibility: Operates on both 208-230V and 460V systems, reducing the need for multiple truck stock items.
• Durable Bearing System: Double sealed ball bearings support all-angle mounting and provide smooth performance under high radial loads.
• Thermal Protection: Features an automatic reset thermal overload protector to prevent winding failure during extreme ambient conditions.
• Flexible Installation: The 6-inch flat shaft and stud mount design ensure compatibility with a broad range of OEM fan blades and shrouds.
• Reversible Rotation: Simplifies field installation by allowing CW/CCW rotation adjustments via simple lead reversal.

What capacitor is required for the US Motors 8431?
This 1HP motor typically requires a 12.5 MFD / 370V capacitor for proper PSC motor operation. Always verify the rating on the motor nameplate before installation.

Can this motor be used in vertical shaft-up applications?
Yes, the all-angle ball bearings allow for shaft-up or shaft-down mounting. For wet applications, ensure the drain plugs are removed from the bottom end shield to prevent moisture buildup.

What are the physical dimensions of the shaft?
The shaft has a 5/8-inch diameter and the length is 6 inches with a flat, which is the industry standard for most commercial condenser fan hubs.

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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.