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Effect of internal clearance on load distribution and life of radially loaded ball and roller bearings
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Poplawski, Joseph V. Oswald, Fred B. Zaretsky, Erwin V. |
| Copyright Year | 2012 |
| Description | The effect of internal clearance on radially loaded deepgroove ball and cylindrical roller bearing load distribution and fatigue life was determined for four clearance groups defined in the bearing standards. The analysis was extended to negative clearance (interference) conditions to produce a curve of life factor versus internal clearance. Rolling-element loads can be optimized and bearing life maximized for a small negative operating clearance. Life declines gradually with positive clearance and rapidly with increasing negative clearance. Relationships were found between bearing life and internal clearance as a function of ball or roller diameter, adjusted for load. Results are presented as life factors for radially loaded bearings independent of bearing size or applied load. In addition, a modified Stribeck Equation is presented that relates the maximum rolling-element load to internal bearing clearance. |
| File Size | 3205536 |
| Page Count | 39 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120008398 |
| Archival Resource Key | ark:/13960/t6k122t0d |
| Language | English |
| Publisher Date | 2012-04-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Fatigue Life Ball Bearings Deflection Roller Bearings Cylindrical Bodies Iteration Clearances Loads Forces 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 |
