Unless you're servicing oil wells, the maximum any tractor-trailer can weigh is 80,000 pounds--with 20,000 pounds on the steer axle (although it will NEVER get this high) and 34,000 pounds on the tandems. Oil well servicing trucks are different: because of the nature of the product they carry--salt water off the wells, which is super heavy and they don't have scales at the wells--those guys are basically given unlimited gross vehicle weight.
The tractor weighs 20,000 pounds, the trailer weighs whatever it weighs, and the maximum weight of a loaded tractor trailer with one trailer is 80,000 pounds.
In most parts of the United States, a loaded tractor-trailer (also called a Class 8 commercial vehicle) can have a maximum loaded weight (Gross Vehicle Weight Rating, or GVWR) of 80,000 lbs, or 40 tons. Unloaded, depending on the type of tractor and trailer, the truck might weigh roughly between 25,000 and 40,000 lbs.
Generally on a semi-tractor trailer the limit is 80,000lbs
69,500 pounds
To get the answer, you need to weigh your tractor trailer empty. When you get that weight, Lets talk numbers, this is wrong but it is a big example. If your tractor trailer is 35,000 pounds empty. Means you can haul about 45,000, as long as you are not overweight on your three axles. Steer, Rear, and trailer axles. 12/34/34.
You can weigh your tractor and trailer at any Pilot, Loves, Circle K, any truck stop with a Cat Scale (Big Yellow Sign that says Cat Scale).
Your tractor drive tandems could weigh in at 34,000 lbs, but you could only have 20,000 lbs. on the single axle of the trailer.
Number of variables here. It'll depend on the weight of the power unit (Freightliner makes several models), what type of trailer is being pulled, and whether you want loaded or empty weight. Empty, you can expect the weight to be anywhere from 27,000 lbs. and up, again dependent on the tare weight of the power unit and the type of trailer being pulled.
what kind of lorry? a 7.5 tonner will weigh around 4-5 tons empty, a four wheel rigid 18 tonner will weigh around 8-9 tons empty. add an extra ton for each additional axle. a solo tractor unit will be around 7-8 tons, coupled to a tri-axle curtainsider the weight empty will be around 15 tons, coupled to a fridge trailer closer to 18 tons empty. subject to design weights/taxation class, a 4 wheel tractor coupled to a tandem trailer can be loaded up to 33 tons, a triaxle trailer up to 40 tons, a six wheel unit coupled to a triaxle trailer can go up to 44 tons
The highway department does it by using scales which are just large enough to accommodate one set of wheels.
That depends on the tractor and what equipment is installed on it such as size of sleeper, number of axles, whether it has tool boxes, a hydraulic system, and size of fuel tanks. A light trailer would weigh between 24,000 and 46,000 lbs depending on the above information.
Most empty tractors with trailer(48-53ft) weigh around 32-33,000 lbs. They are limited to 80,000 lbs. loaded, unless they have special permits.