brake disc, method for machining a brake disc and motor vehicle

Abstract

The invention relates to a brake disc (10) for a motor vehicle, comprising a friction ring (12) which includes a base body (24) and a coating (26) arranged on the base body (24), a brake disc hub (20) which is radially enclosed by the friction ring (12), and several pin-shaped connecting elements (16) which are each inserted at one end through an insertion opening (22) into an insertion hole (14) of the friction ring (12) and arranged at the other end in the brake disc hub (20), wherein the friction ring (12) is slidably mounted on the connecting elements (16), whereby, in the event of thermal expansion of the friction ring (12), an edge (34) circumferentially delimiting the insertion opening (22) expands in the radial direction (R) of the brake disc (10) relative to the connecting element (16) inserted into the associated insertion hole (14) in the direction of the brake disc hub (20) beyond a critical Length range (32) of the connecting element (16) is moved,wherein a collision of the edge (34) with coating material on the connecting element (16) in the critical length range (32) is avoided by a design feature of the brake disc.

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