Recent content by Tyler

Sorry, could've sworn I put the link in the last post. My mistake. http://www.newmarksystems.com/rotary-positioners/rm-8-motorized-rotary-stage/ Also, the thin disk being rotated is 6061 aluminum, 1/4" thick, 15" radius, and he wants it to turn 40 degrees over a period of 3.5 seconds.

Well, therein lies the catch. He's trying to pick a motor based on the amount of torque he needs, or at the very least trying to verify that the motor he is looking at is more than enough for the task.

A friend of mine posed a question to me the other day and I can't seem to wrap my head around it. He's working with an electric stepper motor to turn a large thin disk, but he can't be sure of the torque required because to find the torque he needs the moment of inertia and the angular...