This needle roller bearing NA2203-2RSR carries radial loads through a single row of needle rollers running in a particularly thick-walled outer ring, combined with a needle roller and cage assembly and a separate inner ring. Bore diameter is 17.0 mm, outside diameter 40.0 mm, net mass 0.113 kg. The outer ring has no axial guidance, and the inner ring can be mounted independently of the outer ring and cage assembly. Sealing lips fitted on both sides provide radial sealing action, keeping contaminants out of the needle roller set and retaining lubricant within the bearing. Since the outer ring is not axially guided and the inner ring mounts separately, this needle roller bearing suits arrangements where the outer ring must move freely in the axial direction while the inner ring is fitted onto the shaft as a distinct assembly step.