SAF-HOLLAND, a global manufacturer of trailer and truck suspensions, fifthwheels, landing gear and coupling products, has introduced a new removable and replaceable HOLLAND two-inch AAR kingpin system for hot dip galvanized upper couplers.
Designed to meet AAR specifications, the patented system features a specially machined kingpin housing and kingpin. The kingpin housing is welded into the upper coupler of the trailer prior to the hot dip galvanization process allowing for complete and uncompromised upper coupler corrosion protection. After galvanization, the replaceable HOLLAND AAR kingpin is precisely secured into the housing with a special nut and collet fastener, allowing the kingpin to remain removable and replaceable over the life of the trailer. Because the AAR kingpin is installed in the upper coupler following the hot dip galvanizing process, it is not exposed to harsh chemicals and temperatures during the hot dip galvanized process.
“This new AAR Kingpin System answers the OEM’s challenges of hot dip galvanizing upper coupler assemblies by allowing the kingpin to be installed after the galvanizing process. This design allows for the easy removal and replacement of the kingpin for dealers, fleets and OEMs,” said Jeffrey Talaga, vice-president of sales and strategic development, Americas.
In addition to providing long-term integrity of the galvanized coating, the new AAR Kingpin can be easily and quickly removed and replaced, saving time and money over the life of the trailer. The system is designed to be compatible with ¼-inch, 5/16-inch, and 3/8-inch bolster plates, utilizing the same housing and different length kingpins to accommodate the thickness variations.