RADIAL PISTON ENGINE WITH ROLLER GUIDES

A hydraulic radial piston machine having a lifting ring and having a cylinder block which is arranged with respect to the lifting ring in a manner allowing it to rotate about an axis of rotation and has a multiplicity of cylinders oriented in the radial direction of the cylinder block. Each of these cylinders accommodates a displaceable piston which is supported on the lifting ring via a roller. The roller is mounted on the piston in a manner allowing it to rotate about an axis of rotation parallel to the axis of rotation of the cylinder block and is held in the direction of its axis of rotation axially in the cylinder via roller guides which are situated in front of its end sides and are torsionally secured with regard to the axis of the cylinder relative to the cylinder block. To obtain the torsional securing of the piston and roller about the axis of the cylinder with little outlay in this hydraulic radial piston engine at least one of the two roller guides of a roller is torsionally secured directly with respect to the cylinder-block without an additional part.