and 19 and then moved in the circumferential direction into their proper position those sealing plates 17 which are intended to be arranged in their proper position in the region of the recess 21 are thus positioned directly adjacent to the recess 21 after the sealing plates 17 have been inserted the closing piece 23 is inserted radially into the first annular groove 18 and then pushed axially into the recess 21 the filling piece is then inserted radially into the first annular groove 18 in a further step the last sealing plates are moved into their proper position whereupon the individual sealing plates 17 are fixed with suitable means in their proper position in order to prevent undesired movement in the circumferential direction the closing piece 23 is now fixed radially and axially it should be clear that the wheel disk arrangement 14 can also have multiple recesses 21 with associated closing pieces 23 and filling pieces 25 thus for example two recesses 21 can be provided which are designed in the wheel disk 15 opposite each other offset by 180 u00b0 in this way on the one hand the mounting or dismounting of the sealing plates 17 can be simplified and on the other hand imbalances can be eliminated fig1 to 18 show a wheel disk arrangement 26 according.