Reasonable rotating shaft deflection?
I'm designing a rotating shaft that carries a wheel. The load is assumed to be 1/2 the hub load placed on the shaft at each end of the rigid hub (20,000 each end). The deflected angle at the bearings is well within tolerance for the bearings chosen. The shaft is 31 inches long and I'm calculating a deflection in the center of 0.052 inches. My calcs for stresses and fatigue are all very good.
I'm not able to find any references to reasonable deflection of a shaft. I'm finding that I need huge increases in diameter to change the max deflection.
I would appreciate some feedback on commonly accepted shaft deflection such as acceptable radial deflection per foot of length or whatever.
Thanks in advance!