SKF Needle roller bearing with ribs with inner ring series NA 69
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Needle roller bearings with ribs are ready-to-fit units. The outer ring and needle roller and cage assembly form a self-retaining unit. The needle roller and cage assembly is guided by the ribs on the outer ring. The bearings are available with or without an inner ring, in a single or double row design, open or sealed versions. Bearings without an inner ring are highly suitable for bearing arrangements with particularly compact radial dimensions, if the shaft raceway can be hardened and ground. Bearings with an inner ring are used if the shaft cannot be configured as a rolling bearing raceway.