Comparison of predicted and experimental performance of large-bore roller bearing operation to 3.0 million DN
Harold H. Coe, Fredrick T. Schuller, Lewis Research Center, United States. National Aeronautics and Space Administration. Scientific and Technical Information Office
National Aeronautics and Space Administration, Scientific and Technical Information Office, 1980 - Technology & Engineering - 18 pages
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0.02 millimeter 000 rpm fig 28 rollers amount of heat bearing cavity bearing operating charac bearing operating characteristics bearing temperatures bearings in references cage slip cage speed Calculated and experimental calculated heat transferred calculated inner-race temperatures calculated values characteristics as functions clearance of 0.12 cold diametral clearance computer program CYBEAN constant at 366 contact angles corresponding experimental data cubic meter cylindrical roller bearings deg F experimental bearing operating experimental values high-speed bearings higher speeds Inner race inner ring inner-race temperatures remain input cold diametral LARGE-BORE ROLLER BEARING Lewis Research Center lubricant flow rate meter per minute minute 2.7 gal/min mounted clearance NASA negative clearance newtons 500 nodes oil flow rate operating character operating conditions percent power loss program predicted program was run results are shown shown in figure subroutines Test Calculated ref Test ref thermal model total oil flow transferred to lubricating unmounted diametral clearance values of bearing volume percentage