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NU300 Series Removable Inner Race

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About NU300 Series Removable Inner Race

NU type cylindrical roller bearings have two ribs on the outer ring and none on the inner ring, so the inner ring is completely removable. The inner ring can be mounted on the shaft separately, which simplifies assembly, and the shaft can move axially, so NU bearings work well as the floating bearing on shafts that expand with heat. They carry high radial loads but no thrust load.

The NU300 series is medium duty, with a larger outside diameter and width than the NU200 for the same bore. Cages are brass or steel. In the part number, E marks the higher capacity design and C3 a larger internal clearance than standard.

For lighter loads, see the NU200 series. If you need the bearing to take some thrust in one direction, see the NJ300 series.

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