Bearings by size

190×340×92 mmbearing

2 standard bearings share the 190×340×92 mm envelope (bore × outside diameter × width). They fit the same shaft and housing bore but are different bearing types.

DesignationTypeLoadsSize
NU2238 / NJ2238 / NUP2238Cylindrical roller bearingHigh radial; NJ/NUP limited axial190 × 340 × 92 mm
22238Spherical roller bearingVery high radial, axial both directions190 × 340 × 92 mm

Same size is not the same bearing. These types carry loads in different directions, have different speed limits and may need different fits, preload or lubrication. Swapping one for another needs an engineering check, not just a matching size.

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