The calculation of the idler speed requires knowing the belt speed of the belt conveyor and the diameter of the idler The specific calculation steps are as follows:
Determine the distance the conveyor belt travels in a unit of time (i.e., belt speed)
Calculate the circumference of the idler roller using the formula: circumference = π × diameter
Divide the distance the conveyor belt travels in a unit of time by the circumference of the idler roller, and the result is the speed of the idler roller (revolutions per unit of time).
It should be noted that, according to domestic and international standards for conveyor rollers, the roller speed must not exceed 600 rpm; otherwise, the rotational resistance of the roller will increase dramatically, leading to a significant reduction in its service life. If the speed of the idler rollers exceeds the limit, the diameter of the rollers can be increased to reduce the speed.