ISB needle bearings in the RNAO and NAO series are bearings without ribs, particularly suited for use in tight spaces. Needle bearings without ribs and without inner ring are mounted directly onto the shaft. Needle bearings without ribs and with inner ring on the other hand must necessarily be used in cases where the shaft cannot be used as a raceway.

ISB needle bearings with seal ring can reach maximum temperatures of -30°C and +80°C.

For large sizes, ISB needle bearings are produced only with two rows, with groove and lubrication hole in the outer ring.


NBS needle bearings without ribs are used in:
* textile machinery;
* machine tools;
* printing equipment;
* etc.

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