Condensing Unit Fan Motor

The Condensing Unit Fan Motor provides forced convection heat transfer across outdoor condenser coils. Constructed with cast aluminum or heavy-gauge steel enclosures, precision silicon steel stators, and dual-shielded ball bearings, each motor operates continuously in ambient temperatures from -30°C to +60°C.

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Condensing Unit Fan Motor for Outdoor HVAC and Refrigeration Systems

Electric fan motors with IP55 totally enclosed housings, Class F thermal protection, and custom shaft options for outdoor heat rejection equipment.

Product Overview

Key Features of Condensing Unit Fan Motor

IP55 Waterproof Enclosure
Sealed motor housing prevents rainwater, airborne dust, and particulate infiltration during storm conditions.

Class F Winding Insulation
Copper windings insulated for continuous thermal thresholds up to 155°C with built-in automatic reset thermal protection.

Precision Ball Bearings
Double-shielded steel bearings filled with high-temperature synthetic lubricant deliver over 40,000 hours of operating life.

Dynamic Rotor Balance
Rotors balanced according to ISO 1940 standards below 1.5 mm/s to limit operational noise and shaft fatigue.

Anti-Corrosive Surface Coating
Electrophoretic paint treatment on the housing withstands 500 hours of neutral salt spray testing.

Technical Specifications

Parameter	Specification	Custom Option
Power Rating	1/6 HP to 1.5 HP (125W - 1100W)	Custom Winding
Voltage Range	115V / 208-230V / 460V (50/60Hz)	380V-415V 3-Phase
Motor Type	Permanent Split Capacitor (PSC) / ECM	3-Phase Induction
Frame Size	NEMA 48 / IEC 80	Extended Mounting Studs
Base Speed	825 / 1075 / 1625 RPM	Dual Speed / Variable
IP Rating	IP55	IP65
Duty Cycle	Continuous S1	S1 Duty
Thermal Protection	Auto-Reset Cutout (130°C - 150°C)	Manual Reset Option

Applications of Condensing Unit Fan Motor

Rooftop Air Conditioners
Drives axial fans on packaged commercial rooftop units for high-volume condenser heat dissipation.

Cold Room Condensing Racks
Supplies continuous airflow across outdoor refrigeration coils in commercial freezer and cooler installations.

Split System Air Conditioning
Provides quiet air displacement in residential and light commercial outdoor condensing units.

Industrial Fluid Coolers
Powers ventilation blades in closed-circuit cooling towers and process fluid chillers.

Motor Configuration & Customization

Mounting Structures: Stud mounting, belly band groove, or rigid base welded to the motor frame.

Shaft Extensions: Carbon steel or 304 stainless steel shafts engineered with single flat, double flat, keyway, or threaded ends.

Lead Wires: Waterproof cable glands, silicone insulated leads, standard 1/4 inch quick-connect terminals, or custom harness connectors.

Enclosure Types: Totally Enclosed Air Over (TEAO) and Totally Enclosed Fan Cooled (TEFC).

OEM Manufacturing Process

Custom Shaft Machining
Precision CNC lathe turning produces custom shaft lengths and keyway dimensions based on engineering drawings.

Stator Winding Tuning
Winding pattern adjustment matches target torque curves, fan blade diameter, and system static pressure drop.

Prototype Production
Engineering samples, CAD dimensional drawings, and motor test performance curves delivered within 15 working days.

Automated Line Testing
Production lines feature 100% automated inspection for insulation resistance, surge testing, no-load current, and vibration levels.

Manufacturing & Quality Verification

Thermal Cutout Protection
Internal thermal protectors disconnect power automatically during fan lockup to protect winding integrity.

Acoustic Noise Control
Low-noise bearing fit tolerances and rotor balancing maintain acoustic levels below 52 dB(A).

Corrosion Protection
E-coated rotor stators and stainless steel hardware prevent oxidation in coastal environments.

Compliance Standards
Production processes certified under ISO9001 quality management, with products meeting UL, CE, and RoHS standards.

FAQ

Q: What is the delivery timeframe for OEM sample development?

A: Custom motor samples manufactured with specialized shaft configurations or electrical ratings are completed within 15 to 20 working days.

Q: How is moisture prevented from entering the motor interior?

A: Motors utilize totally enclosed housings with IP55 gaskets, rubber oil seals along the shaft, potted wire exits, and anti-rust varnish on all stator laminations.

Q: Are these motors direct dimension replacements for standard NEMA 48 frame units?

A: Yes. Mounting bolt circles, frame diameters, shaft centerlines, and capacitor ratings conform to standard NEMA 48 dimensions.

Q: What ambient temperatures can the motor withstand?

A: Standard motors with Class F insulation operate continuously in ambient conditions ranging from -30°C to +60°C.

Q: What certifications are provided for North American and European markets?

A: Product lines carry UL recognition for electrical safety, CE compliance for European directives, and full RoHS material compliance.

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