| 摘要 |
The invention relates to a shaft with length compensation, comprising an anti-friction bearing between the first and the second axial element, which is arranged between a first and a second axial element in such a way that a torque can be transmitted via said shaft from the first axial element to the second axial element or vice versa, thereby causing a relative displacement between the first axial element and the second axial element by a rolling movement of rolling bodies of the anti-friction bearing. The anti-friction bearing comprises at least one pair of bearing units with a first bearing unit and a second bearing unit, each bearing unit having a plurality of rolling bodies, the first bearing unit supporting the first axial element in a play-free manner or with pretension in the peripheral direction of the shaft against the second axial element, while the second bearing unit supports the first axial element against the second axial element in a play-free manner or with pretension in a second peripheral direction which is directed opposite to the first peripheral direction of the shaft. The rolling bodies have a cylindrical or cone-shaped outer surface and are oriented with their rotating axes in the radial direction of the two axial elements or are forming an acute angle thereto such that, when viewing in the peripheral direction of the shaft, they execute a rolling movement on a flat surface that extends over a predetermined diameter region. The bearing units are arranged at the axial end of the first axial element and are oriented towards the second axial element. In the region of the axial end of the second axial element, which is oiented towards the first axial element, a sliding element is arranged in the zone between the first and the second axial element in such a way that a supporting force which is directed in the radial direction of the shaft can be transmitted from the first axial element to the second axial element and vice versa via said sliding element, thereby allowing the relative displacement between the first axial element and the second axial element by a sliding movement while the sliding element is free of torque transmission between the first axial element and the second axial element. |
