Braking device

A braking device comprising:

• an actuator;
• a transmission unit;
• a spreading device;
• a wear readjustment device arranged between the transmission unit and the spreading device;
• a brake lining;
• and
• a friction surface, wherein:
• the actuator moves in a limited actuator operating range;
• the actuator, in a minimum of part of its actuator operating range, rotates the spreading device about at least one pivot point via the transmission unit;
• the actuator presses the brake lining in the direction of the friction surface via the spreading device for generating a contact force as well as a braking torque;
• the transmission unit has a non-linear transmission ratio that is not constant over at least part of the actuator operating range;
• the transmission unit rotates the spreading device according to the non-linear transmission ratio;
• and
• wherein the wear readjustment device is actuated by one of the actuator, the transmission unit, and the spreading device.