Conveyor idlers, or rollers, allow conveyor belts to bear more weight and move freely along their path. Rollers prop up the belt and rotate with the conveyor, preventing the belt from sagging under the load.
Conveyor idlers, supported by brackets to belt height, are typically placed side by side along the entire length of the belt. This facilitates free movement of the belt without impeding transport of the load.
Conveyor idlers are outfitted with tapered roller or double row ball bearings. Sealed bearings are common, although regreasable bearings are available should the idler wear down over time. Idlers vary by length, diameter and type to match the width of the conveyor belt, the speed of the system, and the load they are designed to bear.