Holding device for holding a magnetizable substrate during processing of a substrate surface of the substrate

A holding device for holding a magnetizable substrate during machining of at least one substrate surface, comprising:

• a magnetic holding unit arranged at the end for fixing the substrate at the end via the generation of a magnetic field,
• a receiving unit arranged on the magnetic holding unit for receiving the substrate,
• a replaceable adapter unit arranged within the receiving unit for guiding and shielding the substrate,
• wherein
• the replaceable adapter unit has at least one recess for the feedthrough of the substrate, wherein the substrate is fixable within the holding device in a laterally supported manner by means of the recess, wherein the replaceable adapter unit has at least one first guide element for guiding the substrate, the recess for the feed-through of the substrate arranged within the at least one first guide element, wherein the receiving unit has number of recesses for contacting the substrate surface during the machining, wherein the recesses are formed in the form of cutouts arranged on a longitudinal side of the receiving unit.