"Old" Bendix and Westinghouse washers had porcelainized steel tubs with huge heavy hubs cast into the back of the tubs with the tub shaft coming out of the hub. It was an altogether different form of construction than is employed in the construction of front loader tubs today. I can't vouch for the Bendix tub shafts, but in the 3 belt Westinghouse-design machines that only turned in one direction, the shaft could be unscrewed from the hub and replaced if bearing failure caused damage to the surface of the shaft. When Westinghouse had that bad run of seals that caused premature bearing failure, I remember John performing bearing replacements and, in one case, replacing the damaged tub shaft.