The Koyo 16009 Single Row Ball Bearing is an open-type bearing designed for moderate radial and low axial load applications. With a 45 mm (1.7717 in) inner diameter, 75 mm (2.9528 in) outer diameter, and 10 mm (0.3937 in) width, it features C0 internal clearance for stable operation. Constructed from durable steel with a round bore, riveted steel cage, and open closure, it offers reliable performance across a variety of machinery. This bearing is available with either a steel or brass (FY) cage and comes in multiple configurations, including sealed (2RD, 2RS, 2RU), shielded (ZZ), open, or with a snap ring (NR), providing flexibility to suit different application requirements.