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2. Alcoa Introduces New Lighter, Stronger High-Load Aluminum ...

   www.aol.com/news/2012-09-19-alcoa-introduces-new...

   The improved trailer wheel has a maximum load of 5,500kg per wheel, a near 6% increase to the previous Alcoa model, yet is 2.1kg lighter. ... The aluminum 45mm offset trailer wheel is 37% lighter ...

3. John Deere Gator - Wikipedia

   en.wikipedia.org/wiki/John_Deere_Gator

   R-Gator, autonomous vehicle developed by iRobot and John Deere. In 1997 to 1998, the 261st Area Support Medical Battalion of the 44th Medical Brigade brought a Gator to Bosnia for Operation SFOR2. It was an off-the-shelf commercial version Gator that was painted in camouflage and equipped with a carrying tray on its hood, as well as brackets to ...

4. Semi-trailer - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer

   Semi-trailer. A tractor unit pulling a semi-trailer. A truck pulling a semitrailer using a trailer dolly. A semi-trailer is a trailer without a front axle. 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]

5. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin, a 2-or- -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 ...

6. Semi-trailer truck - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer_truck

   A cab over semi-tractor. Tractor with an end-dump trailer. A FAW semi-trailer truck in China. A semi-trailer truck[1] (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.

7. Roadrailer - Wikipedia

   en.wikipedia.org/wiki/Roadrailer

   Roadrailer. RoadRailers were a trailer or semi-trailer that could be hauled on roads by a tractor unit and then by way of a fifth wheel coupling, operate in a unit train on railway lines. The RoadRailer system allowed trailers to be pulled by locomotives without the use of flatcars, instead attaching trailers directly to bogies.