SKF supplies Inner Rings for Needle Roller Bearings separately. They are primarily used in conjunction with Needle Roller and Cage assemblies and drawn cup Needle Roller Bearings in applications where the shaft cannot be ground and hardened to a suitable raceway tolerance. Extended Inner Rings are also available. These permit greater axial displacement of the shaft, relative to the housing, compared to standard width Inner Rings. They also provide an excellent counterface for the lips of Contact Seals.
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