Sanding pad having a sealing element and a rib structure, and sanding machine

A sanding machine having a drive motor for driving an output and having a sanding pad for fastening on the output, the sanding pad comprising a machining side and has a machining face on which a sanding means for abrasive machining of a workpiece can be arranged so as to be fixed or removable using an adhesive layer, wherein inflow openings for dust-laden dirty air to flow in are situated in the machining face, and outflow openings fluidically connected to the inflow openings via through-channels are situated on the machine side;

• wherein the outflow openings are situated in a suction zone within an annular sealing element that is situated on the machine side for sealingly contacting a counter-sealing element of the sanding machine, wherein the sanding pad comprises a planar body which has a supporting wall provided for supporting the sanding means, which supporting wall is reinforced by a rib structure, the ribs of which project beyond the supporting wall towards the machine side, wherein the ribs delimit cavities which are closed by the supporting wall with respect to the machining side and are open with respect to the machine side, and wherein the sealing element covers at least some of the cavities towards the machine side and/or having a sanding pad on which a cover body is arranged, wherein the cover body is configured as a cushion and has a supporting wall body and a machining wall body, between which an elastic and/or resilient cushion body is held in a sandwich-like manner, wherein the supporting wall body and the machining wall body have flat sides facing away from one another, of which the flat side of the supporting wall body is provided and configured for contact on one or the planar body of the sanding pad and the flat side of the machining wall body contains a sanding means or an adhesive layer for the detachable fastening of a sanding means, and wherein the machining wall body and the supporting wall body are connected to one another by a connecting device on an outer circumference of the cover body, so that the cushion body is protected against mechanical damage by the supporting wall body, the machining wall body, and the connecting device on the outer circumference of the cover body, wherein the sanding machine has a counter-sealing element for contact on the sanding pad and/or the sealing element of the sanding pad.