How To Measure A Belt For A Motor. ¾ bearing vibration ¾ unbalance Measure and record the distance between the motor shaft and the pulley shaft, and then measure the diameter of the motor pulley (also called the drive pulley or sheave) and the fan pulley (called the driven pulley).
If the width is 9 mm, you would need a 7 mm belt. Get a belt a little smaller as the string has no stretch to it. Start the tape measure at the hole you use and measure to the end of the belt, where it meets the buckle.
Internal length v belt width:
You may need to use a little tape to hold the string in place. Start the tape measure at the hole you use and measure to the end of the belt, where it meets the buckle. The mechanical performance of the conveyor belt and the speed resolution of the motor are the limiting factors in maintaining consistent speed with a conveyor belt. When the lever is all the way down, the belt is tight.