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.

Enter the pitch diameter of the 1st pulley in millimeters:. or inches: 
Enter the pitch diameter of the 2nd pulley in millimeters: or inches: 
Enter the shaft center distance in millimeters: ............... or inches: 

or .


Results computed from input data:
 

Belt length (mm) (inches)
Gear Ratio   : 1

 

Center 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.

Enter the diameter of the 1st pulley in millimeter:. or inches: 
Enter the diameter of the 2nd pulley in millimeter: or inches: 
Enter the belt length in millimeter:........................ or inches: 

or .


Results computed from input data:
 

Center Distance (mm) (inches)
Gear Ratio   : 1

Credit is given to Juergen Schoepf for developing this calculator.  Go visit his website at http://kjs.hovercruiser.net.


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