dryspin lead screw systems are used to open and close the doors. Thanks to their lead screw nuts made of self-lubricating high-performance polymers, they eliminate the need for additional lubrication and thus reduce maintenance and cleaning costs. igus stepper motors are used to drive the lead screw systems. E2 micro e-chains, chainflex cables and dryspin lead screw systems are also used in the sliding step under the door because they can be used in dirt, road salt and rain without any problems. The dryspin high helix lead screws continue to function at -40° and under heavy dirt loads.
In addition to entrance doors for passengers in trams, regional and express trains, doors for the driver's cab, the engine room and emergency doors are also equipped with igus components. Even if these are not so highly frequented, they must function safely at all times. Among other things, plain bearings and thrust washers are used in driver's cab and engine room doors. Flawless function is particularly important for folding emergency doors. Here too, iglidur plain bearings are used to avoid additional lubricants or even insufficient lubrication.