This deep groove ball bearing carries a single row of balls with a steel sheet metal cage (suffix JN) and seals on both sides (2RSR), providing a closed design that keeps contamination out and retained grease in. Bore diameter is 17.0 mm, outside diameter 47.0 mm, width 14.0 mm, with a net mass of 112.0 g. Limiting speed is rated at 10200 1/min, and radial internal clearance is CN (Group N), the normal clearance group. The sealed construction and CN clearance make this bearing suitable for applications requiring protection against dust and moisture without external shielding, while the standard clearance supports typical shaft fits without additional adjustment. Being pre-lubricated and sealed, it does not require relubrication in service, simplifying maintenance where access is limited. Dimensionally and constructionally equivalent parts are SKF 6303-2RS1, NSK 6303DDU, and NTN 6303LLU.