18
9.0 Formulae and
conversions
Force conversion constants
newton x 0,2248 = lb
pound x 4,4482 = N
kilogram x 9,8067 = N
Length conversion constants
inch x 0,0254 = m
metre x 39,3701 = in
mm x 0,001 = m
Span length calculation
S =
where:
S = Span length (mm)
CD = Centre distance (mm)
D = Large pulley diameter (mm)
d = Small pulley diameter (mm)
Weight (for mass calculation use)
ounce x 0,02835 = kg
pound x 0,45359 = kg
Reminder: Belt span and mass inputs to the meter must be in SI units, m for the
belt span and kg/m for the belt mass.
(D - d)
2
4
-CD
2
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