The present disclosure relates to a bearing surface transporter comprising an upper part for receiving an object to be transported, such as a patient bearing surface of an operating table, and a lower part. The lower part may comprise: at least three castors for manually moving the bearing surface transporter in any horizontal direction, at least one motorized drive wheel/roller, and a lowering mechanism for selectively lowering and raising the at least one drive wheel/roller relative to the castors, wherein the drive wheel(s)/roller(s) assume(s) an upper position for moving the bearing surface transporter manually and a lower position for moving the bearing surface transporter in a motorized manner. The lowering mechanism may have a pedal which can be actuated in an actuation direction, and the lowering mechanism may be designed such that a first actuation of the pedal in the actuation direction lowers the drive wheel(s)/roller(s) from the upper position into the lower position and that a second actuation of the pedal in the actuation direction raises the drive wheel(s)/roller(s) from the lower position into the upper position.
