Corner cabinet fitting for the gearwheel- controlled movable mounting of a shelf in a corner cabinet

A corner cabinet fitting for movably mounting of a shelf in a corner cabinet has a bearing pedestal, a supporting arm which is mounted on the bearing pedestal so as to be pivotable in a first pivoting movement about a first vertical pivot axis, a shelf carrier which is mounted on the supporting arm so as to be pivotable in a second pivoting movement about a second vertical pivot axis, and a coupling mechanism which couples the second pivoting movement to the first pivoting movement. The coupling mechanism comprises a first rolling element and a second rolling elements, which roll on one another directly or via a belt or a chain, the first rolling element being coupled to the bearing pedestal and the second rolling element being coupled to the shelf carrier.