It has been some time since I sold torsion axles, but I believe they come in three sizes on trailers, 3500, 5000, 7500 and maybe even 10,000 lbs per axle. You can tell by the diameter of the axle, spindle or hub which all determine the capacity. If you cross reference the bearing numbers you can find out or drag it over to trailer shop and they can tell you. 4 lug, six lug and eight lug all carry different capacities. I am sure this is more confusing then not saying a thing.
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