This needle roller bearing carries the load through a full set of needle rollers guided by a standard cage, without an integrated inner ring, giving a compact radial section for a 23.0 mm outside diameter. Net mass is 27.3 g, the limiting speed reaches 23900 1/min and the reference speed is 17000 1/min, values that define the thermal and mechanical speed boundaries for continuous operation. The design suits applications where a shaft surface is used directly as the raceway, keeping radial space to a minimum while maintaining high radial load capacity. The standard cage keeps the rollers evenly spaced and supports smooth running up to the stated reference speed, and the absence of an inner ring means correct shaft hardness and surface finish must be ensured for proper raceway function.