This system washes car underbodies. It automatically recognises the length of the vehicle and travels along it independently. Cleaning is by means of two high-pressure jets from rotating nozzles. For the nozzles to be able to rotate reliably, they have to be able to withstand dirt and water permanently. Conventional metal bearings failed after only a few washes. The downtimes of the washing equipment have only been reduced since the designer started using sturdy iglidur® P plain bearings from igus® in the rotating joints.