Yes, you need to measure the od (outside diameter) of v belt pulleys.

How to measure a belt pulley. If you need an exact measurement, you can use the following formula: Next, measure the pitch diameter (pd). Well get out the tape measure and the calculator.

Is in effective contact with the pulley to transmit driving. With a couple quick measurements you can plug the numbers into this formula to get your belt size! By the outside diameter of the pulley and the width of the outside of the groove.

D 1 = pitch diameter of larger pulley. By checking the set box, the other field is calculated. Allows the user to calculate the center distance, driven shaft speed, rim speed and requirement for dynamic balancing of a given belt and pulley arrangement

The final measurement is the complete overall width of the pulley. Measure or find the diameter of the bigger pulley measure or find the diameter or radius of the another smaller pulley measure the. Measure the diameter of the smaller pully.

There is a different belt length formula common among engineers. C = center to center distance between shafts. Measuring pulley width is relatively simple.

How to measure a belt pulley. Interestingly, the bearing load decreases when running: How do you measure the timing belt between two pulleys?