This component provides the inner raceway for a needle roller bearing assembly, machined as a separate cylindrical ring to allow independent replacement of the inner running surface. The bore diameter is 25.0 mm, width is 20.0 mm, and net mass is 25.8 g, with a hardened cylindrical bore surface designed to run together with a matching needle roller and cage assembly. Being a separate inner ring, it allows the shaft-mounted raceway to be exchanged or matched in tolerance class independently of the outer bearing components, which is useful when the shaft surface itself cannot serve as the running track. As a plain cylindrical ring without integrated sealing or lubrication features, it requires external sealing and lubrication to be provided by the surrounding housing design, and correct fit selection on the shaft is needed to maintain the working clearance of the complete bearing set.