Centre Distance Calculator
This calculator computes the shaft center distance of a drive based on the length of a belt and the 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.
