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).
1.5 millimeters nominal cone corner radius, 30.0 millimeters nominal cone width, electric winch end item identification, 55.0 millimeters nominal bore diameter, steel overall material