A ball bearing motor is an unusual electric motor that consists of two ball-bearing-type bearings, with the inner races mounted on a common conductive shaft, and the outer races connected to a high current, low voltage power supply. An alternative construction fits the outer races inside a metal tube, while the inner races are mounted on a shaft with a non-conductive section.
source/image: Electric Experiments Roobert33
This method has the advantage that the tube will act as a flywheel. The direction of rotation is determined by the initial spin which is usually required to get it going.
There are no windings, magnetic fields, magnets, brushes,but only two bearings connected by a conductor axis.In this motor the current flows through the first bearing, the axis conductor and then the second bearing.The electrical contacts are applied to the outer rings of the bearings.
An alternative construction fits the outer races inside a metal tube, while the inner races are mounted on a shaft with a non-conductive section .This method has the advantage that the tube will act as a flywheel.
1. the engine must be started.
2. the motor rotates in either direction.
3. the engine is running both direct current and alternating current.
The power is approximately 3-5 Volts with very strong curre.
(this is basically a short circuit)