Blower Motor for Aeration Units | Specifications & Standards

Product Specifications

Technical details and manufacturing context for Blower Motor

Definition

The blower motor is the electromechanical component within an aeration unit (blower/filter system) that converts electrical energy into rotational mechanical energy. Its primary function is to drive the attached blower fan or impeller, creating the necessary airflow or pressure for processes such as aeration, ventilation, or filtration. It is a critical part that determines the unit's airflow capacity and energy efficiency. The motor operates on electromagnetic principles: when electrical current passes through its windings within a magnetic field, it generates a force (torque) that rotates the motor shaft. This rotation is directly coupled to the blower's fan or impeller, moving air through the system. Typical specifications include a rated power range of 0.75–7.5 kW, a rated voltage of 380 V AC (three-phase, 50 Hz), and a speed range of 1450–2900 rpm. The efficiency class is IE3 (with IE4 available for premium efficiency), insulation class F (Class H available for high-temperature environments), and protection degree IP55 (IP65 available for dusty or washdown environments). The ambient temperature range is -20 to 40°C, with derating above 40°C. Sound pressure level at 1 m distance, no load, is 70–85 dB(A). Weight ranges from 15–120 kg, and frame size (shaft height) is 80–200 mm. Mounting type is B3, with B5, B14, and V1 also available. These values are directory reference ranges and must be confirmed for the actual model and application. Standards referenced include IEC 60034-1, IEC 60038, IEC 60034-30-1, IEC 60085, IEC 60529, ISO 1680, IEC 60072-1, and IEC 60034-7. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The blower motor operates on electromagnetic principles. When electrical current passes through its windings within a magnetic field, it generates a force (torque) that rotates the motor shaft. This rotation is directly coupled to the blower's fan or impeller, moving air through the system. The motor's speed is determined by the number of pole pairs and the supply frequency. The efficiency class and insulation class affect performance and durability. The motor's protection degree indicates its resistance to dust and water ingress. The ambient temperature range and derating above 40°C must be considered for proper operation. The motor's mounting type and frame size determine its mechanical interface with the blower unit.

Common Materials

Electrical steel (lamination core), Copper (windings), Aluminum alloy (housing/casing), Insulation materials, Bearings (steel/ceramic)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	0.75–7.5 kW	Select based on required airflow and pressure.IEC 60034-1
Rated Voltage	380 V AC	Three-phase, 50 Hz.IEC 60038
Frequency	50 Hz	Other frequencies available on request.IEC 60038
Speed	1450–2900 rpm	Pole pairs determine speed.IEC 60034-1
Efficiency Class	IE3	IE4 available for premium efficiency.IEC 60034-30-1
Insulation Class	F	Class H available for high-temperature environments.IEC 60085
Protection Degree	IP55	IP65 available for dusty or washdown environments.IEC 60529
Ambient Temperature	-20–40 °C	Derate above 40°C.IEC 60034-1
Sound Pressure Level	70–85 dB(A)	At 1 m distance, no load.ISO 1680
Weight	15–120 kg	Depends on power and frame size.
Frame Size	80–200 mm	Shaft height in mm.IEC 60072-1
Mounting Type	B3	B5, B14, V1 also available.IEC 60034-7

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Stator
Stationary part containing windings that create the rotating magnetic field.

Material: Electrical steel laminations, copper wire
Rotor
Rotating part (shaft and core) that turns within the stator's magnetic field.

Material: Electrical steel laminations, aluminum/copper bars
Bearings
Support the rotor shaft, allowing smooth rotation with minimal friction.

Material: Steel, ceramic
Housing/Casing Part
Protects internal components, provides mounting points, and aids in cooling.

Material: Cast iron, aluminum alloy
Cooling Fan
Attached to the shaft to circulate air for cooling the motor.

Material: Plastic, aluminum

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	Up to 1.5 bar
flow rate:	100-5000 m³/h
temperature:	-20°C to 80°C
slurry concentration:	Up to 5% solids by weight

Media Compatibility

✓ Ambient air ✓ Process air ✓ Dust-laden air

Unsuitable: Corrosive gases (e.g., chlorine, hydrogen sulfide)

Sizing Data Required

Required airflow (m³/h)
Static pressure (Pa)
Motor power supply (V/Hz)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Bearing failure

Cause: Lubrication breakdown due to contamination, overheating, or improper greasing intervals leading to metal fatigue and seizure

Winding insulation breakdown

Cause: Thermal degradation from overload conditions, voltage imbalance, or moisture ingress causing short circuits

Maintenance Indicators

Unusual high-pitched whining or grinding noises indicating bearing wear or misalignment
Excessive vibration or visible wobble in the motor housing suggesting imbalance or mounting issues

Engineering Tips

Implement precision laser alignment during installation and re-alignment after maintenance to minimize bearing stress
Establish infrared thermography monitoring program to detect abnormal heat patterns in windings and bearings before catastrophic failure

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

ISO 1940-1:2003 (Balance quality requirements for rotors) ANSI/AMCA 210-07 (Laboratory Methods of Testing Fans for Rating) DIN EN 60335-2-80 (Safety of household and similar electrical appliances - Particular requirements for fans)

Quoted from the published standard.

Manufacturing Precision

Shaft runout: +/-0.01mm
Housing bore concentricity: 0.05mm TIR

Quality Inspection

Vibration analysis (unbalance testing)
Insulation resistance test (dielectric strength verification)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Blower Motor

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Guangzhou first Jun Technology Co., Ltd.

Guangzhou, Guangdong, CN

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