Abstract: A hammer brush holder assembly can be easily fabricated and assembled by robot automation using only a few simple steps. The brush holder has at least two brush support arms swivel-mounted at one end in a brush rocker and pressed against a commutator by a tension spring via the brushes which are held at the other end of the brush rocker. The brush support arms with sleeve-shaped ends can be slipped axially onto lugs molded in an axial fashion to the brush rocker and locked in place. Both brush support arms are connected as parts of a single-piece plastic injection-molded component with an integral breakaway bridge segment which holds both brush support arms to a preselected mutual spacing. The breakaway bridge segment can be eliminated after installation of the hammer brush support assembly in the commutator motor.