This needle roller bearing supports radial loads without an inner ring, allowing the shaft surface to act as the raceway directly. Outside diameter is 35.0 mm, net mass 62.67 g, and the limiting speed reaches 21100 1/min. The self-aligning design of the RPNA type compensates for angular misalignment between shaft and housing. Because the bearing lacks an inner ring, it must be mounted on a shaft with adequate surface hardness and finish to serve as the running surface. The aligning outer ring geometry accommodates shaft deflection or slight angular offset, making it suitable for applications where precise alignment cannot be guaranteed. Lubrication and sealing must be provided externally, as the bearing itself has no integrated seals.