Brake application mechanism for a disc brake

In a brake application mechanism for a sliding-caliper disc brake having an application shaft extending parallel to the plane of the brake disc wherein on the side of said shaft which faces said brake disc, said shaft is supported against a thrust piece movable against said brake disc by a circularly arcuate first contour rotatably mounted in a bearing seat, and on the side of said shaft which faces away from said brake disc said shaft is supported against an element with respect to which said thrust piece is movable by a second contour which is eccentric with respect to said first contour, the improvement wherein said second contour comprises at least:

• a first circular arc having a first center and a first radius;
• and
• a second circular arc having a second center and a second radius;
• the relative positions of said first and second centers with respect to said application shaft and the lengths of said first and second radii being determined so that when said application shaft is rotated the magnitude of any movement of said thrust piece relative to said application shaft in a direction parallel to the plane of said brake disc is minimized.