The inner component of a ball or roller bearing which provides a contact surface for the rolling elements of an antifriction bearing.
66 fed spec all material responses or sae assn std all material responses or aisi assn std all material responses overall material document and classification, 0.8120 inches minimum and 0.8125 inches maximum bore diameter, 0.9988 inches minimum and 0.9993 inches maximum overall outside diameter, 1.0050 inches minimum and 1.0100 inches maximum overall width, straight bore shape