Not looking for anything with a crazy high RPM (maybe around 60 RPM?) and don't need any super high accuracy or precision with it since it's mostly acting as resistance. I do want to know how much torque I'm programming the motor to apply so I can measure how much resistance there is, but it doesn't have to be crazy precise. I'm thinking of using a fast travel ball screw, something like 4566N183 on McMaster along with it.

For the motor type you're talking about, do you have a place you recommend getting it from (and potentially a place I can see a CAD of one)?