It looks like you have a good model working.

Since the Max Stress is at the center hole and that is not relevant to this study, I suggest you split that body into two bodies. You can put those bodies into a single Part to make a Multibody part and use shared topology to connect the mesh. Then when you plot stress, you can do so for the body with the gear teeth and don't include the body with the fixed support or revolute joint.

If the revolute joint is on the left with the Max stress, maybe simply changing the behavior from Deformable to Rigid might make that Max stress go away.