A smooth bearing requiring no maintenance comprises a metallic substrate to which a layer composed of a perfluoroalkylvinylether copolymer having the formula (I) is directly applied: CF2 = CF-O-Rf, in which Rf represents a perfluoroethyl residue, perfluoro-n-propyl or perfluoro-n-butyl, and tetrafluoroethylene. This layer constitutes the sliding layer or an intermediate layer on which a plastic sliding layer is applied.
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