Transmission comprising: - a sun gear element and an internal gear element, of which one is arranged fixedly and the other is arranged movably, - a planetary gear which is arranged on a bearing axle and is arranged between the sun gear element and the internal gear element in such a way that, on its circumference, it is operatively connected to the respective adjacent side of the sun gear element and the internal gear element, - a planetary gear carrier which is connected to the bearing axle of the planetary gear and is arranged in such a way that guidance of the planetary gear between the sun gear element and the internal gear element is brought about, - a hollow axle which is connected fixedly to the planetary gear and surrounds the planetary gear at a spacing from it, and - a drive element for driving the hollow axle, which drive element is arranged on an axle between the planetary gear and the hollow axle, and is operatively connected to the planetary gear and the hollow axle, characterized in that - the bearing axle of the planetary gear is arranged movably on the planetary gear carrier, - in that the drive element has an outer rolling face, and the inner side, facing the said drive element, of the hollow axle has a rolling inner face, via which the operative connection can be produced between the drive element and the hollow axle by means of pressure, - in that the hollow axle has a rolling outer face, and a rolling element is arranged fixedly with the rolling face in such a way that an operative connection can be produced between the rolling face of the rolling element and the rolling outer face of the hollow axle by means of pressure, and - in that a tension apparatus which is connected fixedly to the axle of the drive element is provided, by way of which tension apparatus a drive force can be produced which runs obliquely with respect to the tangential plane on the rolling face of the rolling element at a contact point of the rolling face of the rolling element with the rolling outer face of the hollow axle. - a sun gear element and an internal gear element, of which one is arranged fixedly and the other is arranged movably, - a planetary gear which is arranged on a bearing axle and is arranged between the sun gear element and the internal gear element in such a way that, on its circumference, it is operatively connected to the respective adjacent side of the sun gear element and the internal gear element, - a planetary gear carrier which is connected to the bearing axle of the planetary gear and is arranged in such a way that guidance of the planetary gear between the sun gear element and the internal gear element is brought about, - a hollow axle which is connected fixedly to the planetary gear and surrounds the planetary gear at a spacing from it, and - a drive element for driving the hollow axle, which drive element is arranged on an axle between the planetary gear and the hollow axle, and is operatively connected to the planetary gear and the hollow axle, - the bearing axle of the planetary gear is arranged movably on the planetary gear carrier, - in that the drive element has an outer rolling face, and the inner side, facing the said drive element, of the hollow axle has a rolling inner face, via which the operative connection can be produced between the drive element and the hollow axle by means of pressure, - in that the hollow axle has a rolling outer face, and a rolling element is arranged fixedly with the rolling face in such a way that an operative connection can be produced between the rolling face of the rolling element and the rolling outer face of the hollow axle by means of pressure, and - in that a tension apparatus which is connected fixedly to the axle of the drive element is provided, by way of which tension apparatus a drive force can be produced which runs obliquely with respect to the tangential plane on the rolling face of the rolling element at a contact point of the rolling face of the rolling element with the rolling outer face of the hollow axle.