ROLLER BEARINGS RAILWAY FREIGHT

Brand	Owner (click to sort)	Address	Description
AMSTED	AMSTED INDUSTRIES INCORPORATED	180 N. STETSON AVE., SUITE 1800 TWO PRUDENTIAL PLAZA CHICAGO IL 60601	Roller bearings for railway freight cars;
POLY-SHIELD	AMSTED RAIL COMPANY, INC.	311 S. Wacker Drive, Suite 5300 Chicago IL 60606	Roller bearings for railway freight cars and locomotives;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A vertically aligning slackless drawbar for connecting adjacently disposed ends of a pair of railway freight cars together in a substantially semi-permanent manner. Such vertically aligning slackless drawbar comprises a first member and a second member pivotably and slideably coupled to each other with a pivot pin, preventing lifting of the body of such railway freight car from the bolster in a light aluminum railway freight car application. A predetermined clearance is designed between the adjacent ends of the first and second member to limit lateral movement of the second member in relationship to the first member in order to limit occurrence of jackknifing. The first member is secured to a yoke with the standard "F" pin. The yoke is further secured between the rear lug and a front lug of a center sill of a railway freight car. A pair of tapered gravity wedges compensate for longitudinal slack and are held in place with a pair of leaf springs disposed between the rear lug and said gravity wedge.