Disc brake having an adjusting spindle

A disc brake (1) for motor vehicles, the disc brake comprising:

• a pressure piece (2) that receives an actuating force which is arranged along an axial axis (AB) of the disc brake (1),
• at least one adjusting spindle (10) having a thread (15), wherein the thread (15) has at least one thread turn (11), wherein the adjusting spindle translates axially in response to the actuating force applied on the pressure piece, wherein the adjusting spindle transmits the actuating force to a pressure plate, wherein the pressure plates transmits the actuating force to a brake pad;
• and
• an adjustment unit (20) for adjusting an air gap (L) of the disc brake (1),
• wherein the adjusting spindle (10) is guided axially at least partially through an opening (4) of the pressure piece (2), wherein the opening of the pressure piece is provided with a thread unit (5), and
• wherein the adjusting spindle (10) is guided at least partially through an opening in the adjustment unit (20) and the adjustment unit (20) axially protrudes at least partially into the opening (4) of the pressure piece (2),
• wherein the adjusting spindle (10) includes a limitation (12, 12a, 12b, 12c) disposed in the thread turn (11);
• wherein the limitation in the thread turn of the spindle contacts a stop (5a) of the thread unit (5) and limits adjustment of the spindle (10) relative to the thread unit (5) disposed in the opening of the adjustment unit (20).