A process for the production of a segment brush a half finished product is first produced, having a bristle fill bent at 90° arranged in a ring like form with a radially outwards pointing angular offset supported on a ring shoulder of a transfer device, seated with the second angular offset on a central arbor, axially moveable in the ring and axially protruding. A holding ring holds the first angular offset axially against the ring shoulder and the second angular offset radially against the arbor. Pressing of the bristle fill is made on the transfer device in a press against the holding ring. A pressing arbor firstly spreads the second angular offset of the bristle fill with an attachment, ejects the center arbor and presses the angular offsets against the ring shoulder of the ring.