This needle roller bearing carries a single row of rollers without an inner ring, giving a compact radial cross-section for a 42.0 mm outside diameter and 17.0 mm width, with a net mass of 0.063 kg. Lip seals are fitted on both sides (2RSR), and the cage is of standard design. The limiting speed is 8600 1/min. The double lip seal arrangement protects the roller set from contamination and retains grease within the bearing, allowing operation without external sealing elements. The absence of an inner ring means the bearing must run on a hardened and ground shaft seat, and its slim radial section suits applications where radial space is limited but full needle roller load capacity is still required.