Calculating Proper Belt Length

We are often contacted to calculate the belt length of a specific drive given the center distance, and pulleys sizes are known.  Of course, we are glad to help in any way possible but if this calculation is needed after hours, or a phone is not readily available to you, it can be made through the equation below.

Where:

Lp = Belt pitch length (inches)

C = Center distance (inches)

D = Large pulley diameter (inches)

d = Small pulley diameter (inches)

For additional information on this or any other topic please contact Gates Product Application Engineering by phone at 303-744-5800 or by email at ptpasupport@gates.com.