Rotor for a dynamoelectric machine

摘要

The rotor has an outer region with an annular cross-section for providing the magnetic field. There is a rotor yoke (12) of magnetisable steel, with magnetic field components (13) and a clamping sleeve (15) which is elastically tensioned by plastic expansion of the rotor yoke. The magnetisable steel of the rotor yoke has a tensile limit of 400 N/sq mm or less. The clamping sleeve has a thickness of less than 3 mm and is made of steel with a tenacity of above 1000 N/sq mm.