Blades/Vanes are aerodynamic components in impellers that transfer energy between fluid and rotating machinery.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Efficiency | 75-92% | |
| Blade Count | 5-12 (typical range) | |
| Aspect Ratio | 1.5-4.0 | |
| Chord Length | 50-300 mm | |
| Tip Clearance | 0.1-0.5 mm | |
| Pressure Ratio | 1.1-4.0 | |
| Operating Speed | 500-20,000 RPM | |
| Surface Roughness | Ra 0.8-3.2 μm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A rotating component that transfers energy from a motor to fluid within an agitator assembly
A rotating assembly that propels abrasive media at high velocity for surface preparation.
A rotating mechanical component within a neutralization reactor that mixes reactants to ensure uniform chemical reactions.
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Blade erosion results from cavitation (vapor bubble collapse), abrasive particle impact (in slurry applications), or chemical corrosion. Mitigation includes material hardening (stellite coatings), surface treatments (nitriding), or design modifications (increased leading edge thickness).
Increasing blade curvature (camber) raises pressure generation but may reduce efficiency; more blades improve flow guidance but increase friction losses; backward-curved blades offer better efficiency while forward-curved blades provide higher pressure at lower speeds.
Regular inspection for cracks/erosion, dynamic balancing (ISO 1940 G2.5 standard), cleaning to prevent fouling, monitoring vibration signatures, and timely replacement based on wear patterns. Non-destructive testing (dye penetrant, ultrasonic) helps detect subsurface defects.
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