Abstract: This invention relates to a brushless slip ring using bearing for transmitting voltage and current between rotating rotor and stator. The invention relates to attaching a magnet to the slip ring to create a more stable rotor, eliminating sparks and erosions caused by the disconnection at times to the stator by enforcing a magnetic pull to the stator wall. In addition, a cooling-filtering system with synthetic oil can provide sufficient and constant clean lubrication.