A freight car suspension system has been introduced by American Steel Foundries. The T-11 system is designed expressly for 100-ton capacity freight cars. It combines an advanced snubbing system to absorb and dissipate energy and a design change such that longer travel load-carrying coil springs can be used. The system is warranted for a million miles or 10 years of life. The T-11 system also includes the Simplex side bearing which uses controlled friction to reduce rock and roll motion at critical speeds and to control the high speed swiveling of the truck. Recent tests indicate that the T-11 reduced the damaging effects of lateral shock to an unloaded freight car by as much as 75 percent at speeds above 50 mph. It also reduces the damaging effects of vertical shock inside of a loaded car by as much as 60 percent. Comparisons are to a conventional truck. Better riding qualities should result in longer life for truck components. The life expectancy is rated at 2.65 times that of a conventional truck.

  • Availability:
  • Corporate Authors:

    Murphy-Richter Publishing Company

    20 North Wacker Driver
    Chicago, IL  United States  60606
  • Publication Date: 1973-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00044006
  • Record Type: Publication
  • Source Agency: Progressive Railroading
  • Files: TRIS
  • Created Date: Jun 1 1976 12:00AM