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).
afbma class 2 standard tolerance designation, 2.0000 inches minimum and 2.0005 inches maximum bore diameter, 0.7188 inches nominal cone width, 0.0600 inches nominal cone corner radius, steel overall material