This needle roller bearing carries a single row of needle rollers guided in a cage of standard design, running in an outer ring fitted with two ribs on the sides. There is no inner ring, so the rollers run directly on a hardened and ground shaft seat. Outside diameter is 37.0 mm and net mass is 68.07 g. The limiting speed is rated at 17200 1/min, with a reference speed of 10100 1/min. The two-rib outer ring provides axial location of the roller and cage assembly, allowing the bearing to be mounted without a separate housing shoulder on one side. Since there is no inner ring, radial space is reduced compared to a full complement design, which suits applications where a compact needle bearing is required directly on a shaft. The standard cage guides the rollers at even spacing, supporting the stated speed ratings, and running accuracy depends on the shaft surface finish and hardness at the roller contact zone.