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).
sb3403a1,78286 mfr ref single material response retainer material document and classification, 0.3020 inches minimum and 0.3220 inches maximum cone corner radius, 4.0000 inches minimum and 4.0010 inches maximum bore diameter, 2.2550 inches minimum and 2.2750 inches maximum cone width, sb3403a1,78286 mfr ref single material response cone material document and classification