| 摘要 |
<p>The invention relates to a piston unit for a radial piston machine, comprising a piston and a roller or a roller element, the roller or roller element having a circular cylindrical jacket, apart from a chamfer or the like. In a contact area between the piston and the roller, a hydrostatic pressure- or force-relief element is provided, which forms a pressure field in said contact area. The roller has one or two end-face holes. Due to said hole(s), the roller is slightly weakened at the associated end section so that the Hertzian stress is reduced there.</p> |
