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Summary of Inputs and Outputs
Inputs
TensionTension of the web (N/m or lb/in)
RoughnessCombined roughness of roller and web (µm or mil)
DiameterDiameter of the roller (mm or in)
ThicknessThickness of the web(µm or mil)
Frict.Coef.Friction coefficient at low speed
WrapAngle of wrap of web around roller(°)
SpeedWeb Speed (m/min or ft/min)
Outputs
Air gapFlying height if no grooved roller) (µm or mil)
º CalcCalculated coeff.frict. due to air gap
TFracFraction of tension available to resist slip
GPitchPitch of grooves to remove air (mm or in)
GWidthWidth of grooves to remove air (mm or in)
GDepthDepth of grooves to remove air (mm or in)