Abstract: The invention relates to an idler wheel arrangement for rail vehicles, consisting of a wheel (2) rotatably mounted on an axle stub (4) of an axle (6), in particular of a cranked straddle axle, and having an inside (12) facing the axle (6) and an opposite outside (16) and of holding means for three functional devices, specifically for an earth-contact arrangement (18), a transmitter arrangement (20) of an anti-slip device and a braking device (22). The holding means having a carrier element (24) fixedly connected on the end face to the axle stub (4) on the outside (16) of the wheel (2). The carrier element (24) has reception means for fixed components (18a, 20a, 22a) of all three functional devices (18, 20, 22), the wheel (2) being assigned reception means for correspondingly associated components (18b, 20b, 22b), rotating with the wheel (2), of the three functional devices (18, 20, 22), in adaptation to the arrangement of the fixed components (18a, 20a, 22a).

Abstract: An idler wheel axle for single-axle or double-axle chassis of rail vehicles having individually mounted wheels and U-shaped, dropped-framed vehicles with lateral carrying legs, wherein each wheel is rotatably mounted on the inside of the associated carrying leg, and on an axle stub of the carrying leg via a wheel mounting, and wherein each wheel is torsionally connected on an inside thereof to a shaft that extends outward through orifices within the wheel and the carrying leg.

Abstract: The present invention pertains to a driven loose wheel axle with individually mounted wheels for single-axle or double-axle chassis for rail-borne vehicles, especially for chassis or bogies on low-platform vehicles, wherein a drive is fastened to the chassis frame on the outside on each longitudinal side of the chassis and the drive is connected to the corresponding loose wheel via a cardanic double coupling. According to the present invention, a wheel-carrying frame (1) with contact surfaces (14) for the primary spring system surrounds the two wheels (2) from the outside; the driven interface (3) of the cardanic double coupling is arranged on the inner side of the wheel and the drive interface of the cardanic double coupling is arranged outside the wheel-carrying frame. The cardan shaft (5) provides a connection between the drive interface and the driven interface (3) and is led through a central opening of the wheel (2) and of the wheel-carrying frame (1).