This guideline deals with the special features of non-metal plain bearings (plastic, artificial carbon, hard rubber, ceramic). For bearings made of other materials, please refer to the guidelines VDI/VDE 2252 Sheet 1 (slide bearings), VDI/VDE 2252 Sheet 3 (sintered bearings) and VDI/VDE 2252 Sheet 4 (stone bearings). Gas, magnetic and floating bearings are covered in VDI/VDE 2252 Sheet 6. The basics of plain bearings are explained in detail in guideline VDI/VDE 2252 Sheet 1.*www.vdi.de/2252