Loading...
Please wait, while we are loading the content...
Similar Documents
Filtration effects on ball bearing life and condition in a contaminated lubricant
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Moyer, D. W. Loewenthal, S. H. |
| Copyright Year | 1978 |
| Description | Ball bearings were fatigue tested with a noncontaminated lubricant and with a contaminated lubricant under four levels of filtration. The test filters had absolute particle removal ratings of 3, 30, 49, and 105 microns. Aircraft turbine engine contaminants were injected into the filter's supply line at a constant rate of 125 milligrams per bearing hour. Bearing life and running track condition generally improved with finer filtration. The experimental lives of 3 and 30 micron filter bearings were statistically equivalent, approaching those obtained with the noncontaminated lubricant bearings. Compared to these bearings, the lives of the 49 micron bearings were statistically lower. The 105 micron bearings experienced gross wear. The degree of surface distress, weight loss, and probable failure mode were dependent on filtration level, with finer filtration being clearly beneficial. |
| File Size | 2874418 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780018503 |
| Archival Resource Key | ark:/13960/t9z07xn66 |
| Language | English |
| Publisher Date | 1978-10-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Fatigue Tests Filtration Ball Bearings Contaminants Surface Defects Life Durability Failure Modes Axial Loads Aircraft Engines Lubrication Systems Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
