Sliding panel plant

Sliding sash system having at least one sliding leaf, comprising a track rail in which the sliding panel is guided over at least one roller carriage, wherein a braking device is provided, by which the sliding leaf can be braked, and wherein the braking device is arranged in the region of the roller carriage, characterized, that the braking device (7) with at least one roller (4) of the roller carriage (3) cooperates, by initiating its braking action directly in the roller (4), wherein the braking means (7) in the region of the rotational axis of the roller (4) is arranged, and wherein the braking device (7) has a hole formed as an electrically or magnetically acting brake braking element (8).