Last summer we had a hub fail while towing. The shop determined that a weld had broken, allowing the axle to move. It was where the Dexter axle is welded to the Forest River mounting bracket.
Dexter replaced both axles working with our Extra-Ride Extended Warranty.
Took 31 days to get them in and three hours to get them installed.
As I looked at the two bad axles, it was obvious the welds were machine made by industrial robots. And that the original axle/ bracket were about 1/8 of an inch off, so it was amazing the welds had held as long as they did.
That is how something like this happens. Much is done without a human ever really looking at the product to ensure it was done right.