Maryland Metrics: Belt length Calculator
This calculator will calculate
the approximate belt length required for a belt and pulley drive system.
It is based upon the center distance between the "driving" and the "driven"
shafts, and the "active" or "pitch" diameters of the pulleys/sheaves.
The pitch diameter is the specified diameter of a pulley/sheave for a given
belt type, it is not the outside diameter of the pulley/sheave.
To get the gear ratio of a drive simply divide the pitch diameters of the
pulleys/sheaves. The belt length is only an approximate figure but the
specified length should be within the final adjustment range of the idler
pulleys or the adjustable centers of the shafts.
Enter the data in the following
fields and press the "Calculate" button. The answers will appear below.