Continuation of the previous Example 7.6. Again, the cylindrical shaft is transmitting a maximum of 25 [kW] or 33.5 [hp] and running at 3000 [rpm] in the clockwise direction. It is subject to a maximum bending moment that is equal to the maximum applied torque at its critical location. For the internal stresses previously calculated and if the shaft has a cylindrical diameter of 45 [mm] or 1.75 [in] at a location of much smaller bending moment, estimate the necessary key, pin, and spline to join the hub of a coupling to the shaft. Consider a safety factor KSF of 3.5. Find the joining element geometry or the safety factor for each of the elements used for the joint. The selected material is again set as hot rolled AISI 1040 or ISO C40. Compare results of the different joining elements.
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