Hello World. I'm mostly a software guy, enough to be dangerous with electronic hardware. My application is simple, just need to rotate a 5/8-inch steel shaft bidirectionally between 0 to 135 degrees. The shaft will be mounted in pillow block bearings with an estimated total load of about 15 pounds. How do I size my servo? I need to figure out how to calculate the torque ratings against this load. The speed can be slow, can allow several seconds for this rotation to occur, which is why I believe a simple servo should work better than a DC motor. Servo with metal gears is a given. TIA.