TABLE OF CONTENTS Charles R.Mischke, Ph.D., P.E.
Professor Emeritus of Mechanical Engineering
Iowa State University
Ames, Iowa
| a | Exponents; a = 3 for ball bearings; a = 10/3 for roller bearings | |
| AF | Application factor | |
| b | Weibull shape parameter | |
| C s | Static load rating | |
| C 10 | Basic load rating or basic dynamic load rating | |
| f | Fraction | |
| F | Load | |
| F a | Axial load | |
| F eq | Equivalent radial load | |
| F i | ith equivalent radial load | |
| F r | Radial load | |
| I | Integral | |
| L | Life measure, r or h | |
| L D | Desired or design life measure | |
| L R | Rating life measure | |
| L 10 | Life measure exceeded by 90 percent of bearings tested | |
| n | Design factor | |
| n D | Desired or design rotative speed, r/min | |
| n i | Application or design factor at ith level | |
| n R | Rating rotative speed, r/min | |
| R | Reliability | |
| V | Rotation factor; inner ring rotations, V = 1; outer ring, V = 1.20 | |
| x | Life measure in Weibull survival equation | |
| x 0 | Weibull guaranteed life parameter | |
| X | Radial factor for equivalent load prediction | |
| Y | Thrust factor for equivalent load prediction | |
| ? | Weibull characteristic life parameter, rotation angle | |
 | Period of cyclic variation, rad |
Figures 18.1 to 18.12 illustrate something of the terminology and the wide variety of...
