Hydraulic-expansion chuck and the use thereof

A hydraulic-expansion chuck for clamping a workpiece, comprising:

• an annular body;
• an inner circumferential surface;
• an outer circumferential surface;
• an axis of rotation;
• a channel integrated into the annular body for receiving a pressurized hydraulic fluid to clamp the workpiece, the channel comprising an annular peripheral channel section formed radially between the inner circumferential surface and the outer circumferential surface;
• a holding contour comprising a plurality of expansion lugs disposed on the inner circumferential surface;
• and
• a plurality of further channel sections branching off from the channel, wherein:
• at least one of the plurality of further channel sections extends proximate a respective lug of the plurality of expansion lugs;
• the hydraulic-expansion chuck is manufactured by an additive manufacturing process;
• andT
• a plurality of cylindrical shaped holding elements arranged at least partially movably on the holding contour and are displaceable against the workpiece when the workpiece is clamped.