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Rolling-element fatigue life of aisi m-50 and 18-4-1 balls
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Zaretsky, E. V. Parker, R. J. |
| Copyright Year | 1978 |
| Description | Rolling element fatigue studies were conducted with AISI M-50, EFR 18-4-1, and VAR 18-4-1. Groups of 12.7 mm (1/2-in) diameter balls of each material were tested in the five ball fatigue tester. Test conditions included a load of 1540 N (347 lbf) giving a maximum Hertz stress of 5520 MPa (800 000 psi), a shaft speed of 10,700 rpm, and a contact angle of 30 deg. Tests were run at a race temperature of 339 K (150 F) with a type 2 ester lubricant. The rolling element fatigue life of AISI M-50 was not significantly different from that of EFR 18-4-1 or VAR 18-4-1 based on a statistical comparison of the test results. |
| File Size | 982001 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780013530 |
| Archival Resource Key | ark:/13960/t3518sw6m |
| Language | English |
| Publisher Date | 1978-04-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Fatigue Tests Fatigue Life Stress Analysis Heat Treatment Bearing Alloys Ball Bearings Hardness Turbine Engines Shafts Machine Elements 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 |
