This cylindrical roller bearing carries a full complement of double row rollers riding on a particularly thick-walled outer ring, with a central rib guiding the outer ring axially together with the rolling elements. Bore diameter is 17.0 mm, outside diameter 40.0 mm, and net mass 0.143 kg. Sealing is provided by protected lip seals on both sides (2RS), and the design follows the X-life concept. The thick-walled outer ring with central axial guidance makes this bearing suitable for applications where the outer ring itself acts as a track roller running surface, taking radial load through the full complement roller set without a cage. The double-sided 2RS sealing keeps grease in and contaminants out, allowing operation without additional external sealing arrangements. The axial guidance by the rib eliminates the need for separate thrust washers when lateral positioning of the outer ring is required.