Fan Impeller (Blades): Pressure Range 0.5-10 kPa

Component Specifications

Definition

Fan impeller blades are precision-engineered rotating elements within fan assemblies, designed with specific airfoil profiles to generate pressure differentials and move air or gases efficiently. They consist of curved surfaces that accelerate fluid through centrifugal or axial motion, with geometry optimized for flow rate, pressure rise, and energy efficiency in industrial applications.

Working Principle

Operates on aerodynamic principles: as the impeller rotates, blades impart kinetic energy to air molecules, creating a pressure gradient. Centrifugal blades use radial flow to increase pressure, while axial blades move air parallel to the shaft. The blade angle, curvature, and rotational speed determine airflow characteristics according to fan laws.

Materials

Typically aluminum alloys (e.g., 6061-T6), stainless steel (AISI 304/316), engineered plastics (polycarbonate, ABS), or composite materials. Selection depends on corrosion resistance, weight, strength, and operating temperature.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	200-2000 mm
Efficiency	65-85%
Blade Count	3-12 blades
Balance Grade	G6.3 per ISO 1940
Pressure Range	0.5-10 kPa
Rotation Speed	500-3600 RPM

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

Fan Assembly

A mechanical assembly within an Air Handling Unit (AHU) responsible for moving air through the system.

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Engineering Analysis

Risks & Mitigation

Imbalance causing vibration and bearing wear
Fatigue failure from cyclic stresses
Corrosion in humid/chemical environments
Erosion from abrasive particles
Resonance at critical speeds

FMEA Triads

Trigger: Material fatigue from continuous operation
Failure: Crack propagation leading to blade fracture
Mitigation: Implement regular NDT inspections, use fatigue-resistant materials, maintain proper balancing

Trigger: Corrosive environment exposure
Failure: Material degradation and reduced structural integrity
Mitigation: Apply protective coatings, select corrosion-resistant alloys, implement environmental controls

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm dimensional tolerance, ±2° blade angle tolerance

Test Method

Performance testing per ISO 5801, balance testing per ISO 1940, material certification per ASTM standards

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.

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Manufacturers of Fan Impeller (Blades)

Manufacturer profiles associated with Fan Impeller (Blades).

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Frequently Asked Questions

What causes fan impeller blade failure?

Common causes include material fatigue from cyclic loading, corrosion in harsh environments, imbalance leading to vibration, erosion from particulate matter, and mechanical damage from foreign objects.

How do I select the right impeller blade material?

Consider operating environment (corrosive, high-temperature), required strength-to-weight ratio, regulatory compliance (e.g., food-grade stainless steel), and cost. Aluminum suits general applications, stainless steel for corrosive environments, and plastics for lightweight needs.

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 (Blades)