The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings. The shaft is made from AISI 1020 cold-drawn steel. At steady-state speed, the gear transmits a radial load of 230 lbf and a tangential load of 633 lbf at a pitch diameter of 8 in.
(a) Determine fatigue factors of safety at any potentially critical locations.
(b) Check that deflections satisfy the suggested minimums for bearings andgears.

12.87 8.50 0.20 2.20 2.75 0485 1.750 0.75 1.181 140 1.181 1.000 2.0 1 R. & R. 0.1 R 0.15 R. 32 R.