Ans. The belt length for a flat belt drive can be calculated using the following formula:
Belt Length = 2 × (Center Distance) + (2 × √(Center Distance² - (Diameter of Larger Pulley - Diameter of Smaller Pulley)²))
The center distance is the distance between the centerlines of the driving and driven pulleys. The diameters of the pulleys should be measured at the point where the belt rides on them.