Power Transmission Products 10.0 Formulas & Conversions
14
Force Conversion Constants
newtons x 0.2248 = pounds
ƒ
pounds
ƒ
x 4.4482 = newtons
kilograms x 9.8067 = newtons
Length Conversion Constants
inches x 0.0254 = meters
meters x 39.3701 = inches
mm x 0.001 = meters
Span Length Calculation
Where:
S = Span Length (mm)
CD = Center Distance (mm)
D = Large Pulley Diameter (mm)
d = Small Pulley diameter (mm)
Weight (for mass calculation use)
ounces x 0.02835 = kilograms
pounds x 0.45359 = kilograms
Reminder: Belt span and belt mass inputs to the meter must be in
SI units, meters for the belt span and kg/m for the belt mass.
10.0 Formulas & Conversions
S = CD
2
–
(D-d)
2
4
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