Kingpin thrust bearing of improvement structure

The utility model discloses a kingpin thrust bearing of improvement structure, include two thrust gaskets, kingpin and be located the holder between the two thrust gaskets, the holder sets up to the even disc sheet of a slice thickness, the thickness of holder is less than needle roller diameter, the holder is provided with and is used for placing needle roller spacing hole, spacing hole pierces through the upper and lower surface of holder. Because the utility model discloses a holder sets up to the even disc sheet of a slice thickness, and the kingpin is placed spacing downthehole, and spacing hole both sides the thickness of the wall is unanimous with the thickness of holder, and the thickness of holder can be according to service environment and decide, and in the use, the kingpin is difficult to grind away the lateral wall in spacing hole, and the kingpin also can not turn the holder over limit, therefore the kingpin can not appear and drop or kingpin extruded phenomenon of each other from the holder. Th