- Author
-
Daugherty, T. L.
- Title
- Ball Bearing Fatigue Lives Using Fire-Resistant Hydraulic Fluids as Lubricants.
- Coporate
- fNavalSurface Warfare Center, Annapolis, MD
- Sponsor
- Naval Sea Systems Command, Washington, DC
- Report
-
CDNSWC/SME-92/15; Program Element 64561N; Task 102Z000; DN 378557
April 1992
27 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
hydraulic fluids
|
lubricants
|
fatigue
|
test methods
|
glycols
|
ball bearings
- Identifiers
- petroleum-based turbine oil; invert emulsion
- Abstract
- Sudden-death test methods were applied to a lot of noise-tested ball bearings to determine the relative fatigue lives when using a standard Navy petroleum-based turbine oil, an invert emulsion fire-resistant hydraulic fluid, and water glycol. Statistical analyses of the results indicated general agreement with existing data on water glycol relative to the turbine oil. However, data on the invert emulsion did not follow the Weibull distribution, and more tests should be conducted to improve predictive capability. Five additional sets of bearings using the invert emulsion fire-resistant hydraulic fluid should be run to failure following the methods described in this report to better define fatigue behavior.