Deep groove ball bearing NSK 6204 DU, dimensions 20 x 47 x 14 mm (bore x outer diameter x width), with contact seals on both sides (DU/DDU designation).

The double sealing protects the internal balls from dust, moisture and processing residue, keeping lubrication effective over time: a feature that also makes it suitable for food processing environments where good sealing is required. The bearing supports both radial loads and moderate axial loads in both directions, and is used to support rotating shafts in meat grinders, slicers and other food processing machines.

Replacement is necessary in the presence of abnormal noise, excessive radial play, overheating or seizing of the shaft it is mounted on.