3.5 inch bolted type king pin
USD $38 - $39 /Piece
Min.Order:100 Pieces
Yangzhou FOWOTE Engineering Machinery Manufacturing Co., Ltd.
Specifications:
1.Material:20CrMoTi
2.Size:3.5 inch
3.D-Value:260 KN
A kingpin is a heavy metal cylindrical pin that is located underneath the front end of the trailer. The kingpin is the mechanism on the trailer that locks it to a road tractor. It is typically positioned between 18" to 48" from the trailer nose.
A greased metal grid plate surrounds the kingpin. This grid plate allows the fifth wheel to slide underneath the trailer.
When the tractor is backed into the nose of a trailer, the fifth wheel pivots and slides underneath the trailer's grid plate.
The fifth wheel then locks onto the trailer's king pin.