ELECTRICAL MOTOR FOR A SUBMERSIBLE MACHINE

摘要

The invention relates to an electrical motor for a submersible machine, comprising a stator unit (8) having a stator core (10) and a rotor unit (9) that is rotatably arranged in said stator unit (8) and has an axially extending centre axis, the rotor unit (9) comprises a rotor core (14) and at least one permanent magnet, the rotor core (14) having an outer diameter that is smaller than an inner diameter of said stator core (8). According to the invention, the rotor unit (9) comprises a brake means (17), the radially outer surface of which is inscribed on a circle having a diameter that is greater than the outer diameter of the rotor core (9), at least the outer surface of the brake means (17) being manufactured from rubber, and at least a part of the brake means (17) being arranged to abut against an inner surface of the stator core (10) upon mutual axial displacement of the rotor unit (9) and the stator unit (8), and the brake means (17) being arranged spaced-apart from the stator core (10) when the rotor unit (9) is in the mounted state in the stator unit (8).