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The well magneto-hydrodynamic armature has suction ferromagnetic tubular element arranged as a set of circular magnets placed one with respect to another with same poles, and inter-magnet inserts. The armature is coaxially installed in perforated ferromagnetic tubular body. Between the magnets placed one with respect to another with same poles magnets of radial magnetization are installed, at that the inter-magnet inserts near those magnets are arranged with inner diameter larger than the diameter of the neutral line of the magnet of radial magnetization, and the inner diameter of the other inter-magnet inserts is equal to the inner diameter of the magnets.