Permanent magnet for e.g. rotor of induction machine, has magnet surface formed corresponding to cylindrical surface of support e.g. rotor, so that complete fitting of surfaces is ensured, where magnet surface has recess to receive adhesive

摘要

The magnet (11) has a magnet surface (94) facing a support e.g. rotor (10), and formed corresponding to an inner cylindrical surface (92) of the support, so that a complete fitting of the surfaces is ensured. The magnet surface has a material recess (91) to receive an adhesive. The recess is formed in an outer edge of the magnet surface in such a manner that a V-shaped groove is formed between the magnet and the support, when the surfaces (92, 94) fit together. Independent claims are also included for the following: (1) a primary part of an electrical machine (2) an electrical machine comprising a stator and rotor.