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Fan Blade RPM

Fan Blade RPM

Fan Blade RPM

(OP)
I have an Aluminium ventilation fan blade that is 1mtr in diameter & has 12 blades on it.
Could someone suggest a maximum rpm rating for this & also the power required to drive it to that rpm.
Thanks

RE: Fan Blade RPM

Your best bet would be to look for similar fans in the Grainger catalog or the McMaster catalog for that information. Otherwise, you would have to know the permissible radial stress based on an RPM value which in turn can lead to estimate air flow from the design of the blades and motor horsepower.

RE: Fan Blade RPM

If possible, check with the manufacturer on the speed limit. They should know.

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