Needle Roller Bearings without Border allow a higher amount of needle rollers in a limited space, as they do not have an outer ring for the needles. As a result, they have the capability to withstand higher radial loads compared to needle roller bearings with borders. To prevent unwanted leakage of the needles, make sure to position the needles carefully and ensure that they do not tilt.

Needle roller bearings without border are suitable for applications with lower speeds and less vibrations, including conveyors, packaging machines, construction machinery and agricultural equipment.

Needle roller bearings with an inner ring are applied when the shaft cannot serve directly as a raceway. In this case, the inner ring acts as a separate raceway for the needle rollers. The shaft can move free in axial direction relative to the housing during rotation, as the needle rollers move between the flange edges of the inner ring and the raceway.

Needle roller bearings without an inner ring are ideal for applications requiring a compact design and high radial load carrying capacity. The raceway on the shaft can be hardened and ground without the need for a separate inner ring. This enables a space-saving and efficient bearing arrangement in which the shaft has higher strength and rigidity.

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