I am trying to determine what type of motor to buy that can spin my load at high speeds without overloading it, but really, evaluating this is not my forte. I know this is not sufficient information but making all relevant assumptions I would like your help in sizing a motor based on the following information:
- A set of 30 100kg discs arranged vertically.(mass can be split to 300kg per set)
- The motor could use gears.
- The load bearing shaft is attached to a magnetic bearing.
- Desired constant speed of 3000rpm.
- Time taken to reach such speed 3 days.
- Should be the most energy efficient method.
- The surface roughness is about 0.2 micrometers.
- The discs are coaxial.
- The discs are 1m in Diameter and 0.1m in thickness. Surface roughness stated above applies.
- The discs are equidistant from each other (surface to surface) at 0.12m.
- All other factors: cost, vacuum chambers, risk/hazards are to be assumed.
With this information I would like a rough estimation of the motor rating to spin and maintain the load at given speed, energy consumed to maintain such a speed, gear ratio.
Edit: I have changed the parameters slightly. I just want something base; some rough idea of size range of the motor. Guys the motor rating is our key concern a large motor is undesirable; all other factors are not a problem. So be it a vacuum chamber, superconducting bearings or complex gearing these are not a problem provided the motor rating remains low(hence why I said most energy efficient method). If the energy requirements for keeping such a high mass device spinning are low enough, budget stops being a problem regardless.
Thorough analysis and risk assessment is scheduled for a much later date and will employ the services of required experts. For now though we just wanted to have rough idea of what we would be dealing with.
