DIFFERENTIAL ACTION RAILROAD CAR AXLE ASSEMBLY

摘要

A differential action railroad car wheelset axle has two individual stub axles, each having one or more annular rings or grooves on the interior ends, said interior ends of the individual stub axles being rotatably mounted within a multi-piece sleeve assembly. The axle assembly has provision for safety pins to prevent independent rotation during installation in the railcar truck frame and also a device to permit relocking or unlocking the independent axle rotation after the original safety pins have been removed. Dry lubricant coatings eliminate the need for periodic liquid lubrication or maintenance. The differential action of the wheelset reduces the horsepower requirement by approximately 30 percent while also reducing the maintenance requirements for both wheels and track in locations where horizontal curves are predominant.