The dimensions of maintenance-free plain bushings WGB and GB correspond to DIN 18550 (DIN ISO 4379). Instead of the materials mentioned therein, e.g. sintered metals, non-ferrous metals, artificial carbon and duroplastics, Hunger plain bushings consist of closed steel rings with PTFE based bearing layers. Hunger plain bushings are designed for radial and axial movements and distinguish themselves by a particularly low friction coefficient without stick-slip effect. Thanks to the strong bearing layer, they can achieve very long service lives.