What are the dimensions of a tractor head in terms of length, width, and height?

1 Answers
McSawyer
07/25/25 3:10pm
The maximum standard dimensions are a length of 13000mm (13 meters) and a width of 2500mm (2.5 meters). National regulations on trailer external dimensions: Single-axle semi-trailer: Length 8600mm, width 2500mm, height 4000mm; Two-axle semi-trailer: Length 10000mm, width 2500mm, height 4000mm; Three-axle semi-trailer: Length 13000mm, width 2500mm, height 4000mm; Center-axle (caravan) trailer: Length 8000mm, width 2500mm, height 4000mm. Combination schemes for tractors and semi-trailers: In terms of height, the height of the tractor's fifth wheel must be considered to determine the semi-trailer's height. Generally, the head heights of major domestic tractor manufacturers are not uniform, ranging from 1.35 meters to 1.42 meters. The size of the kingpin is divided into 90mm and 50mm. Since heavy cargo transportation is still predominant in China, most configurations use the 90mm kingpin.
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