individual deflecting roller units 10 are individually rotatable and or adjustable about an axis to a required take off direction of the respective support belt the spacing of the deflecting roller units 10 from the car 2 or from the counterweight 3 is adjustable for example by threaded rods 20 thus the individual deflecting roller units 10 can be used for compensation for changes in length of the support belts 6 length changes can result during the installing for example by reason of different support belt lengths or they occur in operation for example by reason of unequal loading of the support belts 6 the deflecting roller unit 10 according to the invention can also be used without limitation for elevator installations with a divided support belt arrangement fig3 fig4 and fig5 illustrate an advantageous form of embodiment of the deflecting roller unit 10 in detail the deflecting roller unit 10 comprises a deflecting roller 11 the deflecting roller 11 is matched to a width bt of the support belt 6 the illustrated deflecting roller unit 10 thus offers space for exactly one of the support belts 6 this allows an optimum utilization of the space since no unnecessary space is lost the deflecting roller 11 is mounted on an axle 12 advantageously by means of roller bearings 13 and the axle 12 is connected with a u shaped carrier 14 which laterally retains the deflecting roller 11 the axle 12 is in that case provided for example at one end with securing means 15 against turning and on the other side seals with the u shaped carrier 14 the sealing takes place in that the axle 12 is provided with a shoulder and a flange 16 which is expanded to the u shaped carrier 14 this.