KSB Centrifugal Pump Lexicon –

From A to Z

Hub-to-tip ratio

The hub-to-tip ratio (ν) represents a characteristic geometric dimension of centrifugal pumps' impellers and is usually defined as follows:

The choice of hub-to-tip ratio should ensure optimal suction characteristics. The efficiency at various specific speeds and design aspects such as adjustable blades for waste water handling are some of the significant factors determining the best possible choice of hub-to-tip ratio.

  

  

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