This needle roller bearing carries a drawn cup design with an open end, built to DIN 618/ISO 3245. Outside diameter is 21.0 mm, width 12.0 mm, and net mass 10.2 g. The limiting speed reaches 16300 1/min, with a reference speed of 12300 1/min. The bearing is supplied without sealing. The open-end cup construction allows the needle rollers to run directly on a hardened shaft, reducing radial section height compared to bearings with an inner ring. As the bearing is unsealed, lubrication and contamination protection must be arranged externally at the point of installation. The absence of sealing also means grease or oil must be supplied through the housing design surrounding the bearing.