General guidance for performing brush seating or comutator reprofiling in the field.

Orientación general para realizar el ajuste del asiento de las escobillas o del conmutador en el campo.

The lowly brush is underrated and misunderstood. The brush grade, brush pressure and spring tension, as well as the effect of load and humidity are each important to brush performance in DC machines, wound rotor motors, and synchronous machines.

When repairing slip-ring machines, it is sometimes necessary to re-insulate the collector rings from the hub. In these cases, some procedural guidelines may be helpful. Specifics such as interference fit, type of insulating material, and type of ring material require careful attention.