SAF-Holland has introduced its new removable and replaceable Holland 2-in. 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 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.
The new AAR Kingpin can be quickly removed and replaced and is designed to be compatible with 1/4-, 5/16-, and 3/8-in. bolster plates, utilizing the same housing and different length kingpins to accommodate the thickness variations.
