Is mixing dough that hard on these machines?
Few years back I built a test lab for A.B. Mauri foods , they own Fleischmann's yeast . I had to go back after they opened to set up a tortilla machine in the test kitchen . There was a gal in there making bread . Stainless steel counter with 4 or 5 kitchen aid mixers mixing dough . Talking to her she explained that they do testing for all uses . From home to commercial kitchens . Alot of testing for home users . She had 2 each of the tilt head , and the bowl lift . one of the small ones . Those mixers ran non-stop for the 5 hours I was there . She would pull the dough , use a new bowl and start it right back up .
I don't think you have anything to worry about .