This deep groove ball bearing carries radial and moderate axial loads through a single row of balls running in a raceway, with metal shields on both sides that keep the internal grease charge in place and block coarse contamination from entering the raceway. Bore diameter is 40.0 mm, outside diameter 90.0 mm, width 23.0 mm, and net mass is 0.631 kg. The cage is a steel sheet metal design (JN), and the shielded construction is marked Z in the bore type designation. Internal clearance is C3, wider than normal, which compensates for temperature rise and interference fit during operation and keeps the bearing from running too tight on the shaft or in the housing. Limiting speed is rated at 9100 1/min and reference speed at 9000 1/min, so the bearing suits applications running at these speeds without added external sealing. Equivalent references from other manufacturers are SKF 6308-2Z/C3, NSK 6308ZZC3, and NTN 6308ZZC3.