This deep groove ball bearing carries radial and moderate axial loads in a single row of balls, with a bore of 17.0 mm, an outside diameter of 47.0 mm and a width of 14.0 mm. The design uses metal shields on both sides and a pressed steel cage (JN), giving a net mass of 113.1 g. The limiting speed is rated at 18900 1/min, with a reference speed of 15900 1/min, and radial internal clearance is set to CN (Group N). The metal shields keep the raceway protected from coarse contamination while allowing the factory fill of grease to remain in place, so no additional sealing is required. Standard CN clearance and the steel cage suit applications with steady radial loading and shaft speeds within the stated limits. Dimensionally and constructionally, this bearing corresponds to SKF 6303-2Z, NSK 6303ZZ and NTN 6303ZZ.