Fan Impeller: Airflow Capacity 500-50000 m³/h

Component Specifications

Definition

The fan impeller is a critical rotating element within exhaust fan assemblies, designed to convert rotational mechanical energy into kinetic energy of air or gas flow. It consists of blades or vanes mounted on a central hub, engineered to create pressure differentials that drive ventilation, cooling, or exhaust processes in industrial systems. Impellers are precision-balanced to minimize vibration and optimize aerodynamic efficiency.

Working Principle

Operates on aerodynamic principles: as the impeller rotates, blades accelerate air outward (centrifugal) or along the axis (axial), creating airflow. The blade geometry (angle, curvature, number) determines pressure generation, flow rate, and efficiency, following Bernoulli's principle and conservation of momentum.

Materials

Typically made from aluminum alloys (e.g., 6061-T6 for lightweight corrosion resistance), stainless steel (e.g., 304/316 for harsh environments), engineered plastics (e.g., polypropylene for chemical resistance), or composite materials. Coatings like powder coating or anodizing may be applied for durability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	200-1500 mm
Hub Type	Keyed, threaded, or taper-lock
Blade Count	5-12 blades
Balance Grade	G6.3 per ISO 1940
Rotation Speed	500-3000 RPM
Static Pressure	100-2000 Pa
Airflow Capacity	500-50000 m³/h

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

Standards

ISO 5801, ISO 13349, DIN 24163, AMCA 210

Parent Products

This component is used in the following industrial products

Exhaust Fan Assembly

A mechanical assembly designed to extract contaminated air from dust containment systems.

View Product Details

Blower/Fan Unit

A blower/fan unit that provides controlled airflow within a clean room assembly station to maintain air quality and particle control.

View Product Details

Engineering Analysis

Risks & Mitigation

Imbalance causing vibration and bearing wear
Corrosion in humid/chemical environments
Fatigue failure from cyclic loading
Material degradation at high temperatures

FMEA Triads

Trigger: Imbalance due to dirt accumulation or blade damage
Failure: Excessive vibration leading to bearing failure or structural damage
Mitigation: Regular cleaning, dynamic balancing during maintenance, and using wear-resistant coatings

Trigger: Corrosion from exposure to moisture or chemicals
Failure: Reduced aerodynamic efficiency and eventual blade fracture
Mitigation: Select corrosion-resistant materials (e.g., stainless steel), apply protective coatings, and control environmental exposure

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm on critical dimensions, balance tolerance per ISO 1940 G6.3

Test Method

Performance testing per ISO 5801 for airflow and pressure, NDT for material integrity, and dynamic balancing 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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Fan Impeller

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

Ningbo Longwell Electric Technology Co., Ltd.

Ningbo, Zhejiang, CN

Also makes: Temperature Controller, Battery System, Air Handling Unit and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Fan Impeller”
View source page ↗ longwellfans.com · checked 2026-09-07

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between centrifugal and axial fan impellers?

Centrifugal impellers move air radially outward, generating higher pressure for ducted systems, while axial impellers move air parallel to the shaft, ideal for high-volume, low-pressure applications like cooling.

How often should fan impellers be inspected?

Inspect every 6-12 months for wear, corrosion, or imbalance, with more frequent checks in high-dust or corrosive environments to prevent failures.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Fan Impeller