Brush holders for railroad applications
There is a large variety of brush holder systems for railroad applications. Apart from the complete brush rockers, the following construction types are amongst the most important types:
Pocket-type brush holders for commutator machines are available for the various pressure systems. In general, they are made of sheet metal or cast metal.
Tandem-type brush holders are preferably used in large-scale machines under harsh conditions of use.
Row holders can be equipped with a wear compensation device if required, which provides for pressure compensation by applying a well-focused counterforce through a spring-loaded bracket, and thus increases the life time of the brushes.