FIELD: electromechanical engineering; driving centrifugal pumps for oil extraction.;SUBSTANCE: proposed motor has housing with axial cavity, shaft, and shaft extension packing disposed in this cavity. Motor is characterized in that its housing has annular and axial cavities having wall and that it is provided with bell secured on shaft through sealed joint, its side wall being disposed in annular cavity and dipped in stratal liquid; axial cavity is filled with neutral liquid. Bell is stepwise converging toward bottom. Motor is also provided with circular plug.;EFFECT: enhanced reliability and extended service life of motor.;3 cl, 4 dwg
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