The invention relates to a mounting of one or more electromagnetically bleeding spring-loaded brakes (a, b) on a machine wall or the like. The invention is characterized in that the brakes are, while distributed over the periphery on the face, act upon an axially moving brake rotor (5) with continuous friction linings (6) on both sides (i.e. left and right), whereby braking (left) surface of the friction lining (6) and on the opposite side with the armature discs of the brakes on the second (right) friction lining (6).