An actuation shaft for thrust bearing of a coupling required new bearings. The existing bronze bushes shrunk over the years and had to be replaced along with the shaft. It was also required to avoid the lubrication points of the axis in future. The result is: iglidur® M250 plain bearings are now applied after about 30 years of exclusive usage of bronze bearings. They are dirt-resistant, lubrication-free and can be easily installed.