Active and passive yaw brakes, in particular for the rotation of gearboxes in wind power installations; components for yaw brakes, namely, brake segments other than for vehicles; active and passive rotor brakes for the rotors and/or wings of wind power installations; locking devices being machine components for rotors and/or wings of wind power installations, namely, rotor locks, rotor brakes, sliding bearings, hydraulic power units, passive yaw brakes, and active yaw brakes; brake linings fo...