Quote Originally Posted by Ioannis View Post
Maybe you can use a small stepper motor with linear motion like the ones on the CD head mechanism? ...

That's always an option, but it's a slower mechanism.

And I still have the issue of having sufficient torque to activate the switch. The motor has a stroke length, but no mention of force.

The manufacturer of the pushbutton switch with the red shaft has come back with a price of $0.044 USD for a 100gf model; that is very affordable and essentially the same price I paid for the 330gf model.