This robot checks ventilation shafts before and after cleaning. By using iglidur® W300 plain bearings, reliability can be increased. The previously used ball bearings had to be oiled regularly, which is not the case with iglidur® bearings. Due to their small size, the robot could be smaller, so that even smaller air ducts can be expected. Using a drylin® N flat track, a disinfectant injector can also be mounted on the robot.