Abstract: The rotating hydraulic machine (102) comprises: —a housing (10), —a shaft (20) movably mounted relative to the housing about an axis, —an apron (24) rigidly connected to the shaft and extending around at least a portion of the housing, —a cam (12) rigidly connected to either the housing or the shaft, —a cylinder block (42) rotationally connected to the other of either the housing or the shaft, the cylinder block comprising pistons capable of engaging with the cam to produce a relative rotation between the shaft and the housing, —first and second guide bearings (28) each bearing directly on the housing and the apron, and —at least a third guide bearing (37) bearing directly on the housing and the cylinder block.

Abstract: A hydraulic piston machine including a housing, a shaft that is able to rotate relative to the housing, and a cam secured to one of the housing or the shaft. A cylinder block includes pistons that are able to move in the cylinder block opposite the cam in order to generate relative rotation between the cylinder block and the cam. The cylinder block is linked in rotation to the other of the shaft or the housing. A mechanism forms rotation guide bearings for guiding the rotation of the shaft relative to the housing, which mechanism includes a tapered plain bushing interposed between a housing element and an element linked in rotation with the shaft and in which the tapered plain bushing includes a radial through-slit extending through the entire radial dimension of the bushing.