Solid Lubricated Rolling Element Bearings
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 15, 1980
- Accession Number
- ADA155423
Entities
People
- Michael N. Gardos
Organizations
- Hughes Aircraft Company