Search results
Results from the WOW.Com Content Network
Prior to 1964, tires were all made to a 90% aspect ratio. Tire size was specified as the tire width in inches and the diameter in inches – for example, 6.50-15. [24] From 1965 to the early 1970s, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches.
An Oshkosh M1070 8×8 Heavy Equipment Transporter (HET) tractor pulling a 5-bogie M1000 HETS trailer, carrying a slat-armored M93 Fox 6×6 NBC detection vehicle near Baghdad. A tractor unit can have many axles depending on axle load legislation. The most common varieties are those of 4×2, 6×2, and 6×4 types [a]. However, some manufacturers ...
The combination of a semi-trailer and a tractor truck is called a semi-trailer truck (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United States). [1] A large proportion of a semi-trailer's weight is supported by a tractor unit, or a detachable front-axle assembly known as a dolly, or the tail of another trailer ...
Conventional style cab tractor A cab-over semi-tractor Tractor with an end-dump trailer A FAW semi-trailer truck in China A semi-trailer truck (also known by a wide variety of other terms – see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel. Other terms There are a ...
Heavy-duty tire changers can work with some wheels up to 56 inches (1.4 m) in diameter and tires up to 90.5 inches (2.30 m) in diameter and 43 inches (1.1 m) wide. [5] Heavy-duty tire changers are used for agricultural, off-road and construction vehicles.
The coupling consists of a kingpin, a 2-or-3 + 1 ⁄ 2-inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a fifth wheel on the rear of the towing vehicle. As the connected truck turns, the downward-facing surface of the semi-trailer (with ...
The underside view shows the arrangement of the 18 tires (wheels). Shown in blue in the underside view are the axles, drive shaft, and differentials. The legend for labeled parts of the truck is as follows: tractor unit; semi-trailer (detachable) engine compartment; cabin; sleeper (not present in all trucks) air dam; fuel tanks; fifth-wheel ...
The other main mechanism for attaching a load is through a drawbar, a single point, pivoting attachment where the implement or trailer is not in a fixed position with respect to the tractor. The primary benefit of the three-point hitch system is to transfer the weight and resistance of an implement to the drive wheels of the tractor .