The yaw bearing is installed at the joint between the tower frame and the cockpit, and the variable propeller bearing is installed at the root of each blade and the hub.Each wind turbine is equipped with one set of yaw bearings and three sets of variable rotor bearings (some wind turbines below the megawatt class are non-adjustable blades and do not need variable rotor bearings).
1. Identification code
Wind turbine yaw, variable propeller bearing code method is adopted in the JB/T10471-2004 slewing bearing code method, but the wind turbine yaw, variable propeller in the double row four-point contact ball slewing ring, and the code of the structure bearing no provisions in JB/T10471-2004, as a result, the increase in this standard the double row four-point contact ball bearings.Due to the structure of single row four-point contact ball slewing bearings with 01 type, according to the structure of code 02 said is double row reducer ball wheel bearing structure, thus provides 03 said double row four-point contact ball slewing bearing structure.
