SINGLE ROW FOUR POINT CONTACT BALL
Description
Description
Yaw bearings are used to rotate the engine room at the top of the tower. The ring gear is connected with the flange of the tower drum through bolts, and the ring gear is connected with the main frame of the engine room, so as to keep the fan in a positive direction and against the wind direction, or untie the cable when the cable is excessively twisted.

              Without gear                       Internal gear                                External  gear