Roller sorting machines provide a sorting speed of up to 150 units / min, and are capable of handling loads weighing up to 225 kg.
Another type of climbing line consists of a belt conveyor, which has several narrow belts instead of one wide one. At the point of removal, between the narrow conveyor belts, there are rows of transverse wheels. Until it is necessary to remove the load from the conveyor, the wheels are located below the surface of the conveyor belts. When the crate reaches the pickup point, the cross wheels lift the crate and remove it from the conveyor.