The weight limit of a single axle trailer depends on several factors. The frame, axle type, tire rating, and the springs all have to be factored in.Smaller trailers could be rated at only a few hundred pounds, while heavier built units can haul full sized cars.
Gross 52,000 lbs
ABOUT 23,000 LBS ABOUT 23,000 LBS
With a single axle trailer, they would be allowed a gross weight of 52,000 lbs for interstate use. Pulling a set of doubles, they're still limited to 80,000 lbs. gross weight by the federal regs, but some states will allow them 92,000 lbs. gross weight for intrastate use.
The most considerable restriction to pay attention to on pulling your U-haul trailer, is that you have a vehicle that is large enough and powerful enough to haul a trailer. Make sure the axle and transmission can pull the added weight.
Well, that depends on what it's pulling. The federal law allows a max weight of 80,000 lbs., including for double trailers. Some states will allow a truck pulling doubles to gross 92,000 within that state. They can haul as much weight legally as a tandem axle tractor-trailer can, so long as they remain within legal axle weights.
It can vary according to the configuration of the trailer axles. A straightforward tanndem, with no spread, is permitted 34.000 lbs. on the trailer axles, which would allow the combination to gross out at 66,000 lbs. A 10 ft. spread axle, on the other hand, is allowed to weigh 40,000 on the trailer axles, which would permit the combination to gross 72,000 lbs.
What it says on the side is irrelevant. Permissible Gross Vehicle Weight is determined in accordance with the Bridge Law Formula. 50k was probably the normal GCWR with the trailer it normally pulls - most likely, also a single axle, although 52k should be the correct GCWR for a single axle with a 27' single axle pup trailer, though a 20k gooseneck trailer is also possible. There may also be a possibility that was the weight it was licensed for - this is something which also varies by state.
The definitive answer is...it depends. Very few trailers are made with axels of 2000lb (or less) capacity. Most are 2500 to 5000 llbs (per axle). So if you have a dual axle trailer with two 3500 lb axles you can haul 7000 lbs MINUS what the trailer weighs. I have a single axle 6X12 with a single 3500 lb axle. The trailer weighs approx 500 lbs, so I would feel relatively safe hauling a 3000 lb load.
25,000 - 40,000 lbs. or more, depending on specifics. When you say "tractor-trailer", you're citing an all-inclusive category which would include everything from a single axle tractor pulling a 28' single axle trailer up to heavy haul units of over 20 axles... I've personally run combinations which have weighed in excess of 250,000 lbs. empty.
There aren't any - that's determined by the vehicle's weight rating.
For interstate travel in the US without requiring oversize permits, the gross weight is 80,000 lbs. What that translates to in cargo weight depends on the vehicle's tare (empty) weight. Typically, a truck with a flatbed trailer will be good for 45,000 - 48,000 lbs., and a truck pulling a dry box can typically haul 43,000 - 45,000 lbs. of freight.
That depends on the length of the power unit and the weight of the trailer. With a Kenworth W900L with a 265" wheelbase and a 53' stepdeck trailer, I had an overall length of 77 feet. With a Volvo VNL730 and a 48' flatbed or stepdeck trailer, I was right at about 67 or 68 feet. Heavy haul combinations can be significantly longer, but 65 to 78 feet would be about the norm for an over-the-road regional or line haul tractor pulling a single trailer.