This inner ring provides the shaft-side raceway for a needle roller bearing arrangement, replacing a hardened and ground shaft when full radial section utilization is required. It has a bore diameter of 12.0 mm, a width of 16.5 mm, a cylindrical form, and a net mass of 7.9 g. The cylindrical design allows the ring to be mounted directly on the shaft without an integral flange, so axial guidance must be provided by the surrounding housing or adjacent components. Being a separate inner ring, it must be matched with a needle roller and cage assembly or full complement needle bearing of corresponding bore size, and shaft fit tolerances should be selected to achieve the required internal clearance and running accuracy.