Magnetic Bearings 640381

Methods of freely, magnetically, suspending rotors in air, in various media, and in a vacuum are described. Rotors weighing from 10−6 lb to over 100 lb have been suspended and spun, but both larger and smaller rotors can be employed. Rotor speeds in excess of 106 rps and centrifugal fields of over 109 g have been obtained. When “coasting” freely in air at a pressure of 10−9 torr, ḟ/f ~ 10−9 sec−1, were ḟ is the loss in rotor speed per second at a speed “f.” A double magnetic suspension also will be described.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.