INVESTIGATION OF LOW PRESSURE VENTS USED IN JOURNAL ROLLER BEARINGS (DOCKET NO. RB-6)
The following conclusions on the performance of low pressure release vents in use on freight car roller bearings are: the size and location of passageways and ports leading to the vents are not sufficient to prevent plugging with grease; synthetic elastomeric vent elements are susceptible to hardening and permanent deformation; the method of locking the vent in the backing ring does not allow easy maintenance or replacement of the vent element; the vent element may dislodge under operating conditions which impaires performance; when the vent is ineffective for relieving pressure, the grease and pressure are relieved through the seal, which could cause seal displacement and damage; and excess grease in the roller bearing causes bearing temperatures and pressures to increase.
Chicago, IL United States 60616
- Publication Date: 1965
- Pagination: 2 p.
- TRT Terms: Bearings; Freight cars; Journal boxes; Lubrication; Machine valves; Pressure; Railroad cars; Technology
- Geographic Terms: United States
- Old TRIS Terms: Pressure control valves
- Subject Areas: Maintenance and Preservation; Railroads;
- Accession Number: 00039430
- Record Type: Publication
- Report/Paper Numbers: MR-442 Tech Rpt
- Files: TRIS
- Created Date: Jul 8 1994 12:00AM