Single row cylindrical roller bearings in the RNU series are cylindrical roller bearings based on the NU design, supplied without an inner ring. These bearings are typically used in applications where hardened and ground raceways are provided on the shaft. Since RNU bearings have no inner ring, the shaft diameter can be larger to provide a stronger and stronger bearing arrangement. Furthermore, the possible axial displacement of the shaft relative to the housing is limited only by the raceways on the shaft.
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