MEDIO DE SUSPENSION PARA UN ASCENSOR Y ELEMENTO DE ASCENSOR PARA ACCIONAR O DESVIAR DICHO MEDIO DE SUSPENSION EN UNA INSTALACION DE ASCENSOR

Medio de suspensión de ascensor (2, 12) y elemento de ascensor (1, 11) para accionar o desviar el medio de suspensión de ascensor (2, 12) en una instalación de ascensor, presentando el elemento de ascensor al menos una superficie de contacto (4, 14) que coopera con el medio de suspensión (2, 12), caracterizados porque la media aritmética de la rugosidad de la superficie de contacto (4, 14), medida en la dirección circunferencial (A) del elemento de ascensor (1, 11), oscila entre 0,1 y 0,8 micras. The elevator installation has a cabin (10) or a platform for carrying persons and goods, and has counter weights arranged to move or slide along a movement track. The counter weights are movably coupled with one another with the help of traction unit or with a drive. The counter weights move or slide along a movement track and is assigned a driving unit or a force transmission arrangement, which is guided or driven by driving disk or driving shaft or a deflection pulley. Independent claims are also included for the following: (1) a force transmission arrangement or a belt like traction unit (2) a manufacturing method for traction unit (3) a manufacturing device for belt like traction unit (4) an elevator system with two cabins.