The Koyo 6003 Single Row Ball Bearing is built from durable steel and designed for reliable performance in moderate radial and low axial load applications. It features a 17 mm (0.6693 in) round bore, 35 mm (1.378 in) outer diameter, and 10 mm (0.3937 in) overall width. With a riveted steel cage, open closure, and C0 internal clearance, this single-row bearing ensures smooth operation and stability, making it a dependable choice for light to medium-duty machinery.