This combined bearing carries a needle roller unit together with an angular contact ball bearing, giving it the ability to take radial load and axial load acting in both directions from the same compact position on the shaft. Bore diameter is 12.0 mm, outside diameter 24.0 mm, and width 17.5 mm, with a net mass of 33.7 g. Limiting speed is rated at 23600.0 1/min, with a reference speed of 21000.0 1/min. The needle roller section takes up radial load with a small cross section, while the angular contact ball bearing part locates the shaft axially in both directions, removing the need for a separate second bearing to manage double-direction thrust. This layout suits mounting positions where radial and bidirectional axial guidance must be combined within a narrow width, and the stated speed limits define the practical operating range for the unit.