The inner component of a ball or roller bearing which provides a contact surface for the rolling elements of an antifriction bearing.
6al4v per ams 4928 assn std single material response ball material document and classification, stab/tow cable end item identification, 2.0050 inches minimum bore diameter, bearing,journal part name assigned by controlling agency, 2.3765 inches minimum and 2.3775 inches maximum outside diameter