Disk brake for a commercial vehicle

A commercial vehicle disc brake for use with a brake disc, the disc brake being mountable on a stationary brake carrier, the disc brake comprising:

• a sliding caliper that straddles the brake disc in use;
• two brake pads arranged in the caliper, the brake pads being moveable in opposite directions in order to contact the brake disc in braking operations;
• at least one fastening element having a guide spar, the fastening element being operatively configured for fastening the caliper to the stationary brake carrier;
• a brake application device having at least one adjusting spindle, the brake application device being operable to press the one of the two brake pads on an action-side of the disc brake facing the brake application device against the brake disc;
• an adjusting device by way of which a wear-induced change in an air play between the brake pads and the brake disc is compensatable;
• a restoring device operatively arranged on the action-side of the disc brake, the restoring device including a restoring element, the restoring device being operable to automatically bring the caliper into an initial position counter to a displacement direction during brake application;
• wherein the restoring device includes a supporting part, the supporting part being operatively configured to remain in position with respect to the stationary brake carrier during the braking-induced displacement of the caliper, the supporting part interacting with the restoring element, and
• further wherein the restoring element and the adjusting device are configured such that either the maximum possible moving force of the restoring element is lower than the minimum possible adjusting force of the adjusting device, or the minimum possible moving force of the restoring element is greater than the maximum possible adjusting force of the adjusting device.