Pulley and Belt Size Selection Calculator

The Pulley and Belt size selection calculator helps you calculate the pulley2 diameter and the belt length size based on mm and inches input.

Belt and Pulley Calculator
mm inches




Pulley and Belt Size Calculation Formula

To calculate Pulley2 dimension and belt size based on motor RPM, Pulley1 dimension, motor rpm, and center distance, you can use the following formulas:

Pulley 2 Calculation Formula:

Pulley2 Size (in mm)= (motor rpm * motor pulley1 size)/ required rpm.

Belt Length Calculation Formula:

Belt Size (in mm) = 2 * Pulley Center distance + ( π * (motor pulley 1 size + pulley 2 size)) /2.

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