Braking and/or clamping device having a piston-loadable disk element

A braking and/or clamping device (10), comprising

• an annular housing (21) which has at least one pneumatic or hydraulic connection (13) and surrounds a rod receptacle (22),
• wherein the rod receptacle (22) is oriented in an axial direction (15),
• wherein the annular housing (21) has a base part (51) and a cover part (31),
• wherein an annular pressure chamber (16) is disposed within the annular housing (21),
• wherein the annular pressure chamber (16) is delimited in the axial direction (15) by at least one piston (90;
• 100),
• wherein the at least one piston (90;
• 100) has a bulged piston top face (97) and is movable in the axial direction (15),
• wherein the annular pressure chamber (16) is delimited in a radial direction by outer walls (34, 52) of the housing (21) and by an inner ring (110) which surrounds an inner wall (27) of the housing (21),
• wherein the inner wall has an inner wall portion (41;
• 81),
• wherein a disc element (120;
• 140) is disposed in the housing (21) on the bulged piston top face (97),
• wherein the bulged piston top face (97) faces away from the annular pressure chamber (16) and is oriented in the axial direction (15),
• wherein the bulged piston top face (97) is or can be seated against or fastened to the disc element (120;
• 140),
• wherein the inner wall portion (41, 81) is protrudingly located in the cover part (31) or in the base part (51) of the housing (21),
• wherein the disc element (120;
• 140) is seated against the inner wall portion (41;
• 81) so that a load on the inner wall portion (41, 81) decreases with increasing deformation of the disc element (120;
• 140),
• wherein the load is directed radially towards the braking and/or clamping device (10), and
• wherein the braking and/or clamping device (10) is oriented in the axial direction (15).