Abstract: A water-cooled electromagnetic brake of this invention has a stator accommodating thereinside a movably mounted rotor with pole teeth and an excitation winding mounted on a ring with holes, while in the stator lids there are provided toroid-shaped collectors for cooling liquid having circular slots for the introduction of said liquid fed from a gap between the stator and rotor to the collectors, and ports in the lower portion of said collectors for the removal of the cooling liquid. Each one of the pole teeth of the rotor is provided with a recess in the central portion thereof located beneath the ring with holes while the peripheral portion of the tooth has a projection receivable in the space of the collectors, the inner edge of said collectors being fashioned as a baffle close to which a labyrinth seal is provided between the rotor and the stator.

Abstract: An electromagnetic brake comprising an exciting coil with a water-proofing means, disposed in an armature or a serrated inductor, a liquid cooling cavity embracing the exciting coil, and a support ring to which the exciting coil is attached. The supporting ring and the water-proofing means are made of nonconducting materials.