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| Customization: | Available |
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| Diameter: | Standard |
| Loading Weight: | 65 Tons |
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Product Features
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Shell thickness (mm) |
Installation height (mm) |
D value (KN) | Vertical load U(T) |
Total train mass (T) |
Longitudinal swing angle |
| 8 | 150/165/173/185/200 | 152 | 20 | 65 | 10~15° |
| 10 | 150/165/173/185/200 | 152 | 28 | 70 | 10~15° |
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-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 kingpin at the center) rotates against the upward-facing surface of the fixed fifth wheel, which does not rotate.
Some camper trailers also use a fifth-wheel configuration, with the coupling installed in the bed of a pickup truck as a towing vehicle; "fifth wheel" is therefore sometimes used as a synonym for such campers.
| Shell thickness (mm) | Installation height (mm) | D value (KN) | Vertical load U(T) | Total train mass (T) | Longitudinal swing angle |
| 8 | 140/150/165/173/185/200 | 165 | 20 | 65 | 10~15° |
| 10 | 140/150/165/173/185/200 | 200 | 30 | 80 | 10~15° |
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