Centrifugal Air Circulation Fan Motor

The Centrifugal Air Circulation Fan Motor drives air distribution equipment in agricultural greenhouses, livestock ventilation systems, and commercial air handling units. Featuring die-cast aluminum or heavy cast iron frames, this motor delivers continuous rotational torque while resisting environmental moisture and solid particulate contamination.

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IP55 Industrial Centrifugal Air Circulation Fan Motor

High-efficiency AC centrifugal air circulation fan motor engineered for continuous-duty ventilation equipment operating against static pressure in high-humidity environments.

Product Overview

Key Features of Centrifugal Air Circulation Fan Motor

TEFC Enclosure (IP55): Completely enclosed surface cooling prevents dirt, moisture, and fine dust from entering the internal stator.

Class H Winding System: Thermal tolerance up to 180°C protects motor longevity during prolonged peak-load cycles.

Precision Dynamically Balanced Rotor: Operational vibration below 1.5 mm/s prevents shaft fatigue and minimizes noise transfer.

Double-Shielded Ball Bearings: Factory pre-greased bearings maintain smooth radial motion under direct-drive impeller loads.

E-Coated Corrosion Defense: Electrophoretic external coating protects housing surfaces from corrosive gases and ambient moisture.

Technical Specifications

Parameter	Standard Specification
Output Power	0.18 kW - 7.5 kW
Poles / Speed	2P (2800-3450 RPM) / 4P (1400-1750 RPM)
Voltage Range	220V / 380V / 415V / 460V
Frequency	50Hz / 60Hz
Phase Count	Single-Phase / Three-Phase
Protection Class	IP55 / IP56
Insulation Class	Class F / Class H
Duty Rating	Continuous Duty (S1)
Mounting Types	B3, B5, B14
Frame Material	Die-Cast Aluminum / Cast Iron

Applications of Centrifugal Air Circulation Fan Motor

Greenhouse Climate Control: Drives circulation blowers to uniform temperature profiles and manage internal ambient condensation.

Livestock Air Removal: Operates exhaust fan units exposed to moist, ammonia-laden air inside livestock containment buildings.

Commercial Air Handling: Supplies direct rotational torque to forward-curved and backward-curved centrifugal impellers in HVAC ducts.

Industrial Drying Chambers: Powers internal air circulation blowers operating inside elevated temperature processing rooms.

Motor Configuration Options

Shaft Modifications: Customized keyway cuts, flattened ends, or extended lengths machined to precise hub tolerances.

Winding Adaptations: Custom wire turns matching non-standard supply voltages and multi-speed operation modes.

Mounting Interfaces: Adjustable bolt circle diameters and altered junction box positions for tight spaces.

Thermal Sensors: Factory integration of internal thermal protectors or thermistors placed directly on stator windings.

Custom Production Process

Interface Verification: Dimensional checking of mechanical shaft and mounting flange tolerances prior to casting.

Precision Machining: Automated CNC turning of shafts and frames to ensure exact bearing alignment.

Impregnation & Assembly: Vacuum pressure impregnation of windings followed by automated dynamic rotor balancing.

Final Electrical Inspection: Full-load verification of voltage draw, vibration amplitude, and insulation resistance before packaging.

Production Capability Advantages

Vacuum Pressure Impregnation: Resin penetrates deep into winding gaps, eliminating interior void spaces and preventing moisture breakdown.

Bearing Life Expectancy: Precision concentricity machining limits axial runout, supporting bearing service life up to 40000 operating hours.

Automated Factory Testing: Automated bench testing logs electrical draw, thermal rise, and mechanical vibration for every unit before shipment.

Standardized Housing Geometry: Consistent frame dimensions allow direct mechanical replacement across standard ventilation housings.

FAQ

Q: What insulation class supports high ambient operating temperatures?

A: Class H insulation protects internal windings up to 180°C, preventing early breakdown during prolonged duty in high ambient heat.

Q: Can these motors run with variable frequency drives?

A: Three-phase units accommodate frequency drives. Inverter-grade winding wire prevents insulation degradation from spike voltages.

Q: Which enclosure rating protects against spray water?

A: An IP55 enclosure seals the interior from low-pressure water spray, condensation, and non-conductive dust accumulation.

Q: How does frame material choice affect motor function?

A: Aluminum housings reduce overall weight and increase heat dissipation in small frames, whereas cast iron provides structural stiffness and vibration absorption in larger sizes.

Q: What measures protect internal components from atmospheric moisture?

A: Vacuum pressure impregnation seals the copper windings, while double-sealed bearings and anti-corrosion surface treatments prevent moisture penetration.

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