Disk Brake for a Utility Vehicle

A disk brake for a utility vehicle, comprising:

• a brake caliper configured to straddle a disk brake, the brake caliper including
• at least one application device arranged in a region of the brake caliper configured to receive the at least one brake application device,
• a guided bridge configured to displace the at least one application device in a direction toward the brake disk,
• an actuating spindle configured to be supported in a bore of the guided bridge,
• a closure plate configured to close the region of the brake caliper configured to receive the at least one brake application device, the closure plate having an aperture through which the actuating spindle extends in the direction toward the brake disk,
• a thrust piece axially and rotatably supported on the actuating spindle between the actuating spindle and a brake pad configured to be pressed against the brake disk,
• a readjustment device configured to adjust an air gap between the brake disk and the brake pad, the readjustment device being operatively connected to the actuating spindle,
• a bellows configured to seal off a passage region of the actuating spindle at the closure plate aperture, the bellows having an outer circumferential portion configured to be connected to closure plate and an inner circumferential portion configured to be connected to the thrust piece, and
• a securing ring configured to be located in an non-rotating manner on the actuating spindle and on the thrust piece in an axially secured and relatively rotatable manner.