FIELD: conveying liquid media under high pressure. SUBSTANCE: stepping-armature motor has hollow core mounted in bearings, armature installed on hollow core, stator in the form of yoke with projections provided with section made of ferromagnetic material placed in wall of nonmagnetic cylinder and sealed joints, nonmagnetic cylinder being fitted between stator and armature, flanges for joining motor to adjacent sealed spacer; yoke projection section has at least two bars mounted radially; one of flanges is rigidly fixed on cylinder, other one is loosely mounted on cylinder surface; hollow-core bearings are installed in cylinder bore. EFFECT: improved design. 4 cl
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