Full complement cylindrical roller bearings are without cage, so that it allows the bearing to have maximum possible quantity of rollers, and thus enabled the bearing to have greater carrying load capacity in comparison to normal types of similar size cylindrical roller bearings with cage.  However, full complement cylindrical roller bearings have poorer performance in high speed operation, so they are mostly used for applications of considerably low speeds but under heavy loads.  Full complement bearings are available both in single row and double row.