Wow and OK. Here I thought even though you were saying rotor and meant shaft. With rotor diameter in mind I don't know of any data sheets which call that out. My best suggestion would be try and call a few manufacturers and ask for an applications engineer. They would have access to those drawings hopefully.Hi Ron,
Actually I am looking for the rotor diameter, not shaft. I would like to use stepper motor electromagnets for my project - magnetic beads separation. I have to put a 10mm diameter test tube inside the motor replacing the rotor.
Thank you
Ilya
I wonder if you would be happy to sketch and perhaps explain in more detail what you are trying to do? For example, will you be making the test tube rotate? It's quite possible to build a basic stepper motor oneself - what step angle are you looking for?Actually I am looking for the rotor diameter, not shaft. I would like to use stepper motor electromagnets for my project - magnetic beads separation. I have to put a 10mm diameter test tube inside the motor replacing the rotor.