Solid Lubricated Rolling Element Bearings
Semiannual status rept. no. 3, 1 Aug 1979-31 Jan 1980
HUGHES AIRCRAFT CO CULVER CITY CA AEROSPACE GROUPS
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This program deals with the development of advanced dry-lubricated bearings for cruise missile gyro and turbine engine application, keeping the latter in the focal point of the main research effort. Significant accomplishments include 1 We established the theoretical and practical basis of and demonstrated the need for immediate bearing surface integrity studies and the need for improved, more homogeneous bearing steels. 2 In spite of the lack of experimental data, based solely on literature information and the understanding of tribology fundamentals, we were asked to predict success or failure for ion-sputtered versus chemical vapor deposited CVD hardcoats for high Hertzian stress, rolling element bearing use. We predicted failure of the former and sucess for the latter. Later, experimental data proved our contentions. 3 We identified reactive sputtering of selected hardcoats e.g., titanium nitride--TiN as the next best hardcoating process to CVD in terms of adhesion. It was further stated that reactive sputtering of selected hardcoats could be made cost effective to eliminate the overtempering problem of the CVD process and the resultant attrition due to bearing distortion.
- Coatings, Colorants and Finishes
- Lubricants and Hydraulic Fluids
- Machinery and Tools