I had to make an entirely new Axle end for a friend's Trailer, the old one was weared by the wheel due a broked bearing. i couldn't find the replacement anywhere.
It was made from SAE 1040 steel and welded onto the round beam.
I'm uploading a drawing with all the measurements in milimeters if someone want to make his own. I also draw the Hub of the wheel.
Bearings are 30204 and 30205, both tapered roller bearings. The original Nut is 3/4"x16tpi, but i made a M20x1.5 because it's easyer to me (and also i prefer metric)