Some Cylindrical Roller Bearings (https://www.hotbearings.com/cylindrical-roller-bearings/) feature no ribs on the outer or the inner ring, meaning that the rings are able to move in a lateral direction relative to one another. They are able to be utilized for free-end bearings. Cylindrical roller bearings, which one of the outer rings are made up of two ribs, and the outer ring has just one can withstand certain axial loads in one direction . Double-row cylindrical roller bearings are high in rigidity radially and are used predominantly to make high-precision machine tools.