The following conclusions were drawn from this study: 1. The adoption of a rule to scrap all axles having overheated journals, or any other modification to scrap certain axles having overheated journals will not be completely effective in the elimination of broken journals, or have appreciable effect on the reduction of hot boxes. 2. Axles which are severely overheated are more likely to have inherent thermal damage than those which have been slightly overheated. 3. The primary cause of the majority of all broken journals results from burn-offs during overheating. The most effective remedy is the reduction of the incidence of hot boxes. 4. The annual cost of arbitrarily scrapping all axles having overheated journals would be $5,181,903. 5. The annual cost of compliance with a rule which would require that 1/8 inch additional service metal be arbitrarily turned off each overheated journal would be $2,647,165. 6. Ultrasonic testing of car journals during periodic lubrication attention would remove from service journals with cracks or related defects. Annual cost: $874,667.

Media Info

  • Pagination: 4 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00040366
  • Record Type: Publication
  • Report/Paper Numbers: AAR MR-290 Res Rpt
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM