Operational viscosity


 Temperature and viscosity T1, n1 ºC mPa·s
 Temperaturee and viscosity T2, n2 ºC mPa·s
 Temperaturee and viscosity T, n ºC  
     
 Interpolation by Reynolds equation   mPa·s
 Interpolation by Vogel equation   mPa·s

High viscosity lubricants result in high shear stresses. As a rule of thumb, the viscosity of a machine oil fall about 25% with every 10ºC temperature increase.

The Reynolds interpolation function is accurate in the vicinity of the reference points. The Vogel equation is most accurate over the whole range.

Normally the viscosities at 40 °C y 100 °C are taken from the data sheet as reference points, but any two temperatures and viscosities can be inserted.

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