A threaded spindle, having a drive part, which has a longitudinal axis and is mounted in a first journal, and having a threaded part, which has a longitudinal axis, and having a threaded nut, which is mounted in a second journal and in which the threaded part is guided. The multi-layer adhesive and abrasive pad may be formed from layers of adhesive material having abrasive particles in-between each layer. A first environment value is obtained at a first time point.