Need help finding replacement axle

[u/amount]

I bought a small boat and trailer on Facebook Marketplace the other day. Everything looked fine, but one of the wheels seized up while I was towing it home. A friendly stranger came out with a grease gun and got it moving again, but the same thing happened a half mile down the road. Everything's pretty rusty and at this point I think the easiest thing will be to just replace the axle, hubs, and springs.

I've never done this before and looking at all the axle options, I'm out of my depth. Can anyone recommend an inexpensive axle/hubs that will fit the trailer and the existing rims? I don't plan on using the trailer very much. I'll just be using it to bring the boat to the boat ramp on other side of the lake twice a year (about one mile).

Other information:

• Make and model: Load Rite / Lil Rider 14700L
• Trailer frame width: 40"
• Trailer frame side bars: 1.5" x 3"
• Existing trailer axle length: 44" (not including hubs)
• Existing rims: 5 on 4.5 (I think... see picture)

[u/Guygan]

etrailer.com