A moving belt conveyor comprising: - a transport belt having two faces , one of the faces, called the transport face , being intended to receive products transported by the conveyor , - two reversing rollers , the belt being curved into a loop defining two ends, each end engaged around a respective reversing roller , the forward run being intended to transport products, the transport face on the forward run being turned upward and the transport face on the return run being turned downwards, - at least one roller located on the return run , in contact with the transport face , and intended to support the return run , the roller comprising an outer layer provided to be in contact with the transport belt and having a first hardness, the outer layer comprising polyurethane, the roller further comprising an intermediate layer extending under the outer layer , characterized in that the intermediate layer has a second hardness less than the first hardness and the outer layer has a roughness of between 0.001 milimeters and 0.01 millimeters, and in that the outer layer and the intermediate layer form an outer lining of a single part, sheath-like, in that the roller comprises a central armature, the intermediate layer being interposed between the central armature and the outer layer , and in that the outer lining has a diameter slightly less than the central armature so that the central armature is configured to be force-fitted in the outer lining. - a transport belt having two faces , one of the faces, called the transport face , being intended to receive products transported by the conveyor , - two reversing rollers , the belt being curved into a loop defining two ends, each end engaged around a respective reversing roller , the forward run being intended to transport products, the transport face on the forward run being turned upward and the transport face on the return run being turned downwards, - at least one roller located on the return run , in contact with the transport face , and intended to support the return run , the roller comprising an outer layer provided to be in contact with the transport belt and having a first hardness, the outer layer comprising polyurethane, the roller further comprising an intermediate layer extending under the outer layer , characterized in that the intermediate layer has a second hardness less than the first hardness and the outer layer has a roughness of between 0.001 milimeters and 0.01 millimeters, and in that the outer layer and the intermediate layer form an outer lining of a single part, sheath-like, in that the roller comprises a central armature, the intermediate layer being interposed between the central armature and the outer layer , and in that the outer lining has a diameter slightly less than the central armature so that the central armature is configured to be force-fitted in the outer lining. the roller comprising an outer layer provided to be in contact with the transport belt and having a first hardness, the outer layer comprising polyurethane, the roller further comprising an intermediate layer extending under the outer layer , characterized in that the intermediate layer has a second hardness less than the first hardness and the outer layer has a roughness of between 0.001 milimeters and 0.01 millimeters, and in that the outer layer and the intermediate layer form an outer lining of a single part, sheath-like, in that the roller comprises a central armature, the intermediate layer being interposed between the central armature and the outer layer , and in that the outer lining has a diameter slightly less than the central armature so that the central armature is configured to be force-fitted in the outer lining. <EOS>