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Evaluation of drilled-ball bearings at dn values to three million. 2: experimental skid study and endurance tests
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Holmes, P. W. |
| Copyright Year | 1972 |
| Description | Both drilled-and solid-ball 120-mm-bore bearings were tested at speeds up to 24,000 rpm to determine skid characteristics. The thrust loads were varied from 5000 lb down to 370 lb. No gross skidding occurred, and the behavior of the two bearing types was generally similar; however, two drilled-ball bearing failures occurred during the skid tests. In the endurance tests, 25 cycles of start, run (for one hour), and stop were completed before a drilled-ball bearing failed. In all three cases, the ball had failed in flexure fatigue. |
| File Size | 6263272 |
| Page Count | 111 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720014853 |
| Archival Resource Key | ark:/13960/t59d1q41f |
| Language | English |
| Publisher Date | 1972-04-01 |
| Access Restriction | Open |
| Subject Keyword | Machine Elements And Processes Service Life Ball Bearings Materials Tests Failure Analysis Fatigue Materials High Speed Mechanical Properties Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
