A sliding bearing for structural engineering applications, in particular for civil works such as bridges, buildings, structures that are required at the same time to withstand vertical loads and to allow relative movements and/or rotations, and structures to be protected against seismic events, said bearing having a low friction coefficient and being suitable for being used in severe operating conditions, both due to the loads applied and to particularly high operating temperatures. The bearing, which is of the type comprising a first part (2) connected to a supporting structure (P), a second part (3) connected to an element (G) to be supported by the supporting structure (P) and means suitable for allowing said second part (3) to translate and/or rotate with respect to said first part (2), the means comprising plates (4) and/or strips of a low-friction polymer material, is characterized in that the low-friction material is a polyamide.