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King pin instruction
2015-11-17 15:43:31
The function of the kingpin is to engage the semi-trailer to the fifth wheel. The kingpin is the most critical component used in the load transfer from semi-trailer.
1. making a selection
The D-value and the thickness of the welding plate are two considerations in making a kingpin selection for a semi-trailer design. The actual D-value of the selected kingpin must be larger then the calculated D-value. Then determine the thickness of the skid plate.The kingpin D-value and recommended skid plate thickness are stamped at the bottom of the kingpin.
2. kingpin installation
Welding on a channel support for the 2 inch welded kingpin, must be more than 110mmbetween welds.
3. kingpin operation
Operation of the semi-trailer will cause normal wear on the kingpin, due to abrasion. The following are the limits of wear allowable:2” kingpin: A≥49mm B≥71mm ;3.5”kingpin:C≥86mm D≥112mm
related reading: 2" Welded Kingpin Bolted King Pin
Tags: Kingpin
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