An assembled inner component of a tapered roller bearing, consisting of a cone (which provides a contact surface for the rolling elements of the bearing), a complement of tapered rollers (the rolling elements), and frequently a retainer (which spaces the rolling elements).
0.8125 inches nominal cone width, 3.5000 inches nominal bore diameter, feat criticality code justification, critical items include material, finishes, and quality inspections required for safe usage in aviation wheels special features, a-10 acft mlg end item identification