
Nidec-US Motors 6311 Motor
The Nidec-US Motors 6311 Motor is a heavy-duty, 2-speed industrial workhorse designed for high-performance applications such as air compressors, conveyors, and belt-driven blowers. Engineered with a NEMA 56 frame and a 5/8" diameter shaft, this capacitor start-capacitor run motor delivers high starting torque while maintaining operational efficiency across both 1725 RPM and 1140 RPM speeds. The open drip proof (ODP) enclosure is optimized for clean, dry indoor environments, ensuring maximum airflow to the internal windings. This model is constructed with ball bearings and a resilient mount (cradle base), which significantly reduces vibration and noise transmission in HVAC blower motor assemblies. With reversible rotation capabilities and a robust 8.9/6.1 amp rating at 115V, the 6311 provides the versatility required for demanding commercial and industrial motor replacements where reliable single phase power is essential.
Key Benefits- Dual-Speed Versatility: Operates at 3/4 HP (1725 RPM) or 1/4 HP (1140 RPM) to match variable load requirements in airflow and pumping systems.
- Quiet Operation: The resilient base mount isolates motor vibration, making it ideal for noise-sensitive belt drive blower applications.
- High Torque Performance: Capacitor start design provides the necessary torque to start high-inertia loads without overheating.
- Industrial Durability: Features Class B insulation and durable ball bearings for continuous duty cycles in 40°C ambient temperatures.
Is the 6311 motor thermally protected?
No, this specific model (US Motors 6311) does not have internal thermal overload protection. It is recommended to use an external starter or controller with appropriate heater elements for motor protection.
Can I use this motor to replace a 56H or 56Y frame motor?
The 6311 uses a standard 56 frame resilient base. You should verify the "C" dimension (overall length) and shaft height against your current NEMA motor specs to ensure physical clearance in the mounting bracket.
How do I change the rotation direction?
Rotation is reversible by interchanging the internal leads according to the wiring diagram located on the motor nameplate or inside the conduit box.
This item is not eligible for free shipping.
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.
Nidec-US Motors 6311 Motor
The Nidec-US Motors 6311 Motor is a heavy-duty, 2-speed industrial workhorse designed for high-performance applications such as air compressors, conveyors, and belt-driven blowers. Engineered with a NEMA 56 frame and a 5/8" diameter shaft, this capacitor start-capacitor run motor delivers high starting torque while maintaining operational efficiency across both 1725 RPM and 1140 RPM speeds. The open drip proof (ODP) enclosure is optimized for clean, dry indoor environments, ensuring maximum airflow to the internal windings. This model is constructed with ball bearings and a resilient mount (cradle base), which significantly reduces vibration and noise transmission in HVAC blower motor assemblies. With reversible rotation capabilities and a robust 8.9/6.1 amp rating at 115V, the 6311 provides the versatility required for demanding commercial and industrial motor replacements where reliable single phase power is essential.
Key Benefits- Dual-Speed Versatility: Operates at 3/4 HP (1725 RPM) or 1/4 HP (1140 RPM) to match variable load requirements in airflow and pumping systems.
- Quiet Operation: The resilient base mount isolates motor vibration, making it ideal for noise-sensitive belt drive blower applications.
- High Torque Performance: Capacitor start design provides the necessary torque to start high-inertia loads without overheating.
- Industrial Durability: Features Class B insulation and durable ball bearings for continuous duty cycles in 40°C ambient temperatures.
Is the 6311 motor thermally protected?
No, this specific model (US Motors 6311) does not have internal thermal overload protection. It is recommended to use an external starter or controller with appropriate heater elements for motor protection.
Can I use this motor to replace a 56H or 56Y frame motor?
The 6311 uses a standard 56 frame resilient base. You should verify the "C" dimension (overall length) and shaft height against your current NEMA motor specs to ensure physical clearance in the mounting bracket.
How do I change the rotation direction?
Rotation is reversible by interchanging the internal leads according to the wiring diagram located on the motor nameplate or inside the conduit box.
This item is not eligible for free shipping.
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.
Product Information
Product Information
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Shipping & Returns
Description
The Nidec-US Motors 6311 Motor is a heavy-duty, 2-speed industrial workhorse designed for high-performance applications such as air compressors, conveyors, and belt-driven blowers. Engineered with a NEMA 56 frame and a 5/8" diameter shaft, this capacitor start-capacitor run motor delivers high starting torque while maintaining operational efficiency across both 1725 RPM and 1140 RPM speeds. The open drip proof (ODP) enclosure is optimized for clean, dry indoor environments, ensuring maximum airflow to the internal windings. This model is constructed with ball bearings and a resilient mount (cradle base), which significantly reduces vibration and noise transmission in HVAC blower motor assemblies. With reversible rotation capabilities and a robust 8.9/6.1 amp rating at 115V, the 6311 provides the versatility required for demanding commercial and industrial motor replacements where reliable single phase power is essential.
Key Benefits- Dual-Speed Versatility: Operates at 3/4 HP (1725 RPM) or 1/4 HP (1140 RPM) to match variable load requirements in airflow and pumping systems.
- Quiet Operation: The resilient base mount isolates motor vibration, making it ideal for noise-sensitive belt drive blower applications.
- High Torque Performance: Capacitor start design provides the necessary torque to start high-inertia loads without overheating.
- Industrial Durability: Features Class B insulation and durable ball bearings for continuous duty cycles in 40°C ambient temperatures.
Is the 6311 motor thermally protected?
No, this specific model (US Motors 6311) does not have internal thermal overload protection. It is recommended to use an external starter or controller with appropriate heater elements for motor protection.
Can I use this motor to replace a 56H or 56Y frame motor?
The 6311 uses a standard 56 frame resilient base. You should verify the "C" dimension (overall length) and shaft height against your current NEMA motor specs to ensure physical clearance in the mounting bracket.
How do I change the rotation direction?
Rotation is reversible by interchanging the internal leads according to the wiring diagram located on the motor nameplate or inside the conduit box.
This item is not eligible for free shipping.
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.











