• This chart illustrates the logarithmic nature of
the rotation speeds measured at different
pressure levels.
• The formula displayed within the chart can be
used to calculate the rotation speed at any
pressure level.
• The curve and equation relate to average
values. The actual results lie within a small
variance from the curve.
• The labeled “Water Pressure” may refer to any
liquids with similar viscosity as water (i.e. all
types of emulsion/cooling liquid).
• The rotation speed levels shown here are the
no-load speeds (i.e. no torque acting upon the
shaft).