| Title | Prevention of Roller Bearing-Initiated Burnoffs in Railroad Freight Car Journals |
|---|---|
| Record ID | 50249 |
| Personal Name Creator |
Allen, G. E.; Lucas, J. R.; Tomlinson, F. H. |
| Source | 284p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development |
| Publisher | United States. Department of Transportation. Federal Railroad Administration |
| Publication Date | 19790101 |
| Language | English |
| Abstract | The objective of this program was to determine the technical feasibility and cost effectiveness of constructing three separate devices for the prevention of catastrophic roller bearing-initiated, railroad journal failure. 1. Construction of a low cost axle cap bolt which would replace one of the three bolts in a standard bearing assembly, and which would contain a self-powered, maintenance free transmitter to signal a train crew in the event of roller bearing overtemperature, was proven feasible. This is technically and economically superior to current wayside temperature sensing devices, and has the capability of preventing burnoffs associated with bearing failure by any mechanism. 2. The prevention of bearing overlubrication by use of automated ultrasonic test methods was seen to be feasible. Use of such a device in a railroad repair track would prevent regreasing a freshly greased bearing and thereby save the costs of setouts and derailments caused by overlubrication. 3. The early detection of bearing component damage (spalling, brinelling, and particulate contamination) by use of "Shock Pulse Analysis" techniques was also seen to be feasible. Use of an automated device in a railroad wheel shop could save the costs of burnoffs associated with progressive damage, and also of investigative bearing teardown as a result of derailment. |
| Rosap ID | dot:11641 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/11641 |
| TRT Terms | Axles; High temperature; Hot box detectors; Journal bearings; Journal boxes; Lubrication; Mechanical failure; Radio transmitters; Roller bearings; Sensors; Ultrasonic tests; Warning devices |
| Classification | AGR - INFRASTRUCTURE - Railroads; NTL - RAIL TRANSPORTATION - Rail Safety; NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION; NTL - SAFETY AND SECURITY - Vehicle Design; NTL - SAFETY AND SECURITY - SAFETY AND SECURITY; NTL - SAFETY AND SECURITY - Rail Safety |
| Geographical Coverage |
United States |
| Report Number | FRA/ORD-78-16; DOT-TSC-FRA-79-5 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/50000/50200/50249/DOT-TSC-FRA-79-05.pdf |
| Format | |
| Database | NTL Digital Repository |