I concur. I remember the sales guy saying its kilos and doubling it gets you close without maffs n stuff.
There is one thing to consider....the front axle max operating load. If you can find that information. That is most likely conservative as well like Kevin stated about the loaders. That said, not going higher in PSI than Kubotas max recommend should not over load the axle if properly balasted. I found this video very interesting.
This one illustrates how the capacity changes as the loader makes it's arc when lifting. I think the heaviest thing I've lifted with mine was a complete 429 ford big block with 4 speed granny gear transmission attached. Pulled it from the truck and it was about all it wanted to lift once up to clear the core support.
