A carriage for fitting a suspendable door on a rail is described. The carriage includes a housing and at least one running roller disposed on the housing. The running roller is positioned to engage the rail. An installation plate is included that is adapted to be connected to the suspendable door. A suspension bolt is connected between the housing and the installation plate. A portion of the suspension bolt engages a bearing disposed at one end of either the housing or the installation plate. The bearing permits at least angular displacement if the suspension bolt with respect to either the housing or the installation plate.