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English: Diagram showing a side view and underside of a conventional 18-wheeler semi-trailer truck with an enclosed cargo space. 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
Air suspension is a type of vehicle suspension powered by an electric or engine-driven air pump or compressor. This compressor pumps the air into a flexible bellows, usually made from textile-reinforced rubber. Unlike hydropneumatic suspension, which offers many similar features, air suspension does not use pressurized liquid, but pressurized ...
The Twin Y air suspension has trailing arms that fork to the rear and attach to both the top and bottom of the axle. There is an air bag behind the axle on each side and each axle is sprung individually. They are rated at 40,000 pounds (18,000 kg). [12] Walking beams have low bogie pivots with a balance beam going out and under the axles. Any ...
It uses the traditional Tatra concept of rigid backbone tube and swinging half-axles giving independent suspension. The vehicles are available in 4x4, 6x6, 8x8, 10x8, 10x10, 12x8 and 12x12 variants. There are both air-cooled and liquid-cooled engines available with power ranging from 230–440 kilowatts (310–590 hp).
A total of 3300 mm and 6300 mm wheelbases can be selected; the construction version of the Actros is available between 3300 and 5100 mm wheelbases with the option of leaf or air suspension on the front axle and parabolic leaf springs on the rear. The construction variant of the Actros with a 4x2 axle configuration is equipped with drum brakes.
Retaining the earlier mentioned 18.330 as an example, this is a two-axle all-wheel drive truck (4×4) with leaf spring suspension front and rear (BB; B = Blattfederung/leaf suspension). In the case of tractor trucks, an additional S (BBS) denotes tractor truck configuration (S = Sattelzugmaschinen/tractor unit). [7] [9] HX trucks are of a ...
On most automobiles, ride height is modified by changing the length of the suspension springs, and is the essence of many aftermarket suspension kits supplied by manufacturers such as KW, Eibach, [5] and H&R. [6] For trucks, lifted trucks are popular with truck owners, who often upsize their wheels and tires when lifting their vehicles.
Height adjustable suspension is a feature of certain automobile suspension systems that allow the motorist to vary the ride height or ground clearance. This can be done for various reasons including giving better ground clearance over rough terrain, a lower ground clearance to improve performance and fuel economy at high speed, [1] or for stylistic reasons.