Patent ID: 7305759

Claim:
A device for the manufacture of a shaft assembly for a hydrodynamic bearing by pressing a shaft into a fit bore in a bearing disk, the device comprising: a first pressing tool, a second pressing tool, the first pressing tool and the second pressing tool being adapted to be moved towards each other in a feed direction, a shaft receiving portion which receives and guides the shaft aligned exactly to a central axis being associated with the first pressing tool, a bearing disk receiving portion which receives and guides the bearing disk with a first flat surface aligned exactly perpendicular to the axis associated with first pressing tool, the shaft receiving portion and the bearing disk receiving portion positioning the shaft and the bearing disk with respect to each other without contact in a starting position, the shaft receiving portion and the bearing disk receiving portion being movably guidable with respect to each other parallel to the axis via a linear guide and are movable from the starting position into a pressfit position, the linear guide being supported by rolling element bearings, and for pressfitting the shaft and the bearing disk, the first pressing tool acting on one of the shaft or the bearing disk by means of a first pressing element and a second pressing tool acting on the other of the bearing disk or the shaft by means of a second pressing element.