This inner ring provides the raceway component for a cylindrical roller assembly, designed to be paired with a matching outer ring or needle roller cage arrangement. It has a bore diameter of 25.0 mm, a width of 30.0 mm, and a net mass of 39.3 g. The cylindrical outer surface allows direct mounting on the shaft seat without additional flanging, so axial guidance must be provided by the surrounding housing or bearing arrangement. Being a separate inner ring, it is used to complete a full bearing set where the raceway needs replacement or where a needle roller and cage assembly is combined with a hardened, ground bore surface for reduced friction and controlled radial fit. As a bare ring component, it requires the shaft seat tolerance to be selected according to the intended running fit, and it carries no integrated sealing or lubrication provision — sealing and lubrication depend entirely on the housing design and the mating rolling elements used with it.