This inner ring provides the cylindrical raceway surface for a needle roller bearing assembly, replacing a shaft-mounted raceway where a hardened and ground running surface is required. It has a bore diameter of 20.0 mm, a width of 18.0 mm, and a net mass of 24.48 g. The cylindrical bore allows direct mounting on a plain shaft without additional seating features. Being a separate inner ring, it is intended for use with matching needle roller and cage assemblies or full complement needle roller bearings, allowing the shaft itself to remain unhardened. The XL designation indicates a wider ring version, giving additional axial support width for the rolling elements. Since it is supplied as a single ring rather than a complete bearing, correct pairing with a compatible outer bearing component is required to achieve the intended radial guidance and load transfer.