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Fan Blade Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A precision-engineered rotating component designed to convert rotational energy into airflow through aerodynamic principles. In industrial ventilation fans, blades are carefully shaped and balanced to maximize air displacement efficiency while minimizing turbulence, noise, and energy consumption. The blade's geometry, including pitch, chord length, and airfoil profile, determines the fan's performance characteristics including flow rate, pressure generation, and operating efficiency.

Working Principle

Operates on aerodynamic lift and drag principles. As the blade rotates, its airfoil-shaped cross-section creates a pressure differential between the concave (pressure) side and convex (suction) side. This pressure difference generates lift force perpendicular to the airflow direction, propelling air axially or centrifugally depending on fan design. The blade's angle of attack and rotational speed determine the volume and pressure of air moved.

Materials

Typically aluminum alloys (6061-T6, 7075-T6) for balance of strength and weight, stainless steel (304, 316) for corrosive environments, engineered plastics (glass-filled nylon, polycarbonate) for lightweight applications, or composite materials (carbon fiber reinforced polymer) for high-performance requirements. Material selection depends on operating environment, rotational speeds, and durability requirements.

Technical Parameters

Diameter 300-2000 mm
Pitch Angle 15-45 degrees
Balance Grade G6.3 per ISO 1940
Surface Finish Ra 3.2 μm or better
Static Pressure 100-2500 Pa
Airflow Capacity 1000-50000 m³/h
Number of Blades 3-12
Rotational Speed 500-3000 RPM

Standards

ISO 5801, ISO 13347, AMCA 210, DIN 24163

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fan Blade.

Parent Products

This component is used in the following industrial products

Ventilation Fan

A fan component designed to circulate air and dissipate heat within a control system cabinet.

View Product Details

Engineering Analysis

Risks & Mitigation

Imbalance causing vibration and bearing failure
Fatigue cracking from cyclic loading
Corrosion in harsh environments
Foreign object damage
Resonance at critical speeds

FMEA Triads

Trigger: Material fatigue from cyclic stress
Failure: Crack propagation leading to blade fracture
Mitigation: Regular non-destructive testing, proper material selection, stress analysis during design

Trigger: Imbalance due to material buildup or damage
Failure: Excessive vibration damaging bearings and structure
Mitigation: Regular cleaning, dynamic balancing, vibration monitoring systems

Trigger: Corrosion in humid or chemical environments
Failure: Material degradation reducing strength and changing aerodynamic properties
Mitigation: Corrosion-resistant materials, protective coatings, environmental controls

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

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

Test Method

Dynamic balancing per ISO 1940, airflow performance testing per ISO 5801, material certification per ASTM standards, non-destructive testing for defects

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What factors affect fan blade efficiency?

Blade efficiency is determined by airfoil design, surface finish, material stiffness, balance precision, and installation alignment. Proper maintenance including regular cleaning and balancing is crucial for maintaining efficiency.

How often should fan blades be inspected?

Industrial fan blades should be visually inspected monthly for damage or buildup, with detailed inspection including balance checks every 6-12 months depending on operating hours and environment.

Can damaged fan blades be repaired?

Minor damage to blade edges can sometimes be repaired by grinding and rebalancing, but significant damage, cracks, or deformation typically requires replacement to maintain safety and performance.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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 Blade