This component is a separate cylindrical inner ring designed to be mounted on a shaft as part of a needle roller bearing assembly. It has a bore diameter of 45.0 mm, a width of 25.5 mm, and a net mass of 72.0 g. The cylindrical bore allows direct fitting onto a shaft without an additional sleeve, and the ring provides the hardened raceway surface required for the rolling elements to run on. Being supplied as a separate ring, it is used where the bearing arrangement requires a dedicated inner raceway matched to the specific bore and width dimensions, allowing replacement of the raceway component independently of the outer bearing unit. The cylindrical design (XL series) means it must be positioned and secured on the shaft according to the fit required by the application, with no built-in flange to provide axial location.