SERVICE BRAKE FOR A WIND TURBINE YAW MOTOR

It is described a service brake (1) for a wind turbine yaw motor brake (20), the service brake (1) comprising a brake housing (2) mountable vertically atop the wind turbine yaw motor brake (20), brake housing furthermore comprising a brake housing cavity (7) extending axially, in direction of a central axis (a), through the length of the brake housing (2). Additionally, a brake disc (3) is comprised within the brake housing (2), the brake disc (3) being rotatable about the central axis (a) in an airgap (12) between at least two friction plates (11). A lever (4) is connected to the brake housing (2), the lever (4), when engaged, is configured to close at least part of the airgap (12) and bring the friction plates (11) in frictional contact with the brake disc (3). A removable centerpiece (5) is insertable within the brake housing cavity (7) along the central axis (a), the centerpiece (5) comprises a brake disc interface (9) configured to engage with the brake disc (3) and a shaft interface (10) configured to engage with a shaft (22) to be braked. The centerpiece (5) is therefore configurable to transfer braking torque from the brake disc (3) to the shaft (22) to be braked.