The expression Fa L = constant can be written using x = L/L10, and it can be expressed as Fa x = K or log F = (1/a) log K − (1/a) log x. This is a straight line on a log-log plot, and it is the basis of Fig. 11–5. For the geometric insight provided, produce Fig. 11–5 to scale using
Ex. 11–3, and
For point D: find FD = 1.2(413) = 495.6 lbf, log FD, xD, log xD, KD
For point B: find xB, log xB, FB, log FB, KB
For point A: find FA = FB = C10, log FA, K10 and plot to scale. On this plot, also show the line containing C10, the basic load rating, of the selected bearing.