Depends on the tow vehicle I guess. Most of those look to be lightweight axles, and the front carrier doesn't look like it holds much more than a pick up bed. So if it's the same weight you could put in your pickup bed, the only real stress will be on the trailer. The truck will handle the tongue weight just fine.
A Class 4 hitch is only rated for 1k tongue weight with 10k GTW. FYI