Abstract: A swivel device is provided for support wheels on front attachments for agricultural machines, in particular for swath pick-up devices on forage harvesters and bale presses. An embodiment includes coupling plates (11) attached to the front free end of the supporting arm (10). Attached to the coupling plates (11) are coupling levers (13, 14), which are connected to swivel plates (15). The swivel plates (15) are connected by a swivel pin (16) to a wheel yoke (17) for receiving the support wheel (7). Between a fixed point on the supporting arm (10) and the coupling lever (14) is arranged a hydraulic cylinder (8).