The yaw gear ring is used to rotate the engine room at the top of the tower. The gear ring is connected with the flange of the tower drum through bolts and the main frame of the engine room without gear ring. The fan is kept in a positive direction and against the wind direction or the cable is unwound when the cable is excessively twisted
Material: Natural rattan (sometimes coated for durability) Handwoven or machine-made Size: Inner Diameter: 3.5 to 4.5 cm (approx. 1.4 to 1.8 inches) Outer Diameter: 5 to 7 cm (approx. 2 to 2.8 inches) Height: 3 to 4 cm (approx. 1.2 to 1.6 inches) Color: Natural rattan color (light tan to dark brown) Sometimes painted or stained in various colors