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2. 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 ...

3. Kingpin (automotive part) - Wikipedia

   en.wikipedia.org/wiki/Kingpin_(automotive_part)

   Kingpin (automotive part) The steering kingpin is held in place by the forked ends of a beam axle on a Ford Model T. The kingpin (also king-pin, king pin and k pin) [1][2] is the main pivot in the steering mechanism of a car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus for a semi and its trailer ...

4. Logistic Vehicle System Replacement - Wikipedia

   en.wikipedia.org/wiki/Logistic_Vehicle_System...

   system. Power-assisted, 1st, 2nd, 4th and 5th axles (mechanically controlled 4th and 5th axle contra-steer) [1] The Logistic Vehicle System Replacement (LVSR) is a family of heavy-duty military logistics vehicles of the United States Marine Corps (USMC) based on a common 5-axle ten-wheel drive (10x10) chassis.

5. Recreational vehicle - Wikipedia

   en.wikipedia.org/wiki/Recreational_vehicle

   Recreational vehicle. A recreational vehicle, often abbreviated as RV, is a motor vehicle or trailer that includes living quarters designed for accommodation. [1] Types of RVs include motorhomes, campervans, coaches, caravans (also known as travel trailers and campers), fifth-wheel trailers, popup campers, and truck campers. Typical amenities ...

6. Rolling resistance - Wikipedia

   en.wikipedia.org/wiki/Rolling_resistance

   Railroads normally use roller bearings which are either cylindrical (Russia) [63] or tapered (United States). [64] The specific rolling resistance in bearings varies with both wheel loading and speed. [65] Wheel bearing rolling resistance is lowest with high axle loads and intermediate speeds of 60–80 km/h with a Crr of 0.00013 (axle load of ...

7. Timken Company - Wikipedia

   en.wikipedia.org/wiki/Timken_Company

   Timken Research was created in 1966 to establish technological leadership and to help standardize research and development processes across the company. [12] Timken expanded into new global markets throughout the 1970s and 1980s, establishing a sales operation in Japan in 1974 [13] and opening sales offices in Italy, Korea, Singapore and ...