Wind turbine bearings can be roughly divided into three categories: yaw bearings, pitch bearings, transmission bearings (spindle and gearbox bearings).The yaw bearing is installed in the junction of the tower and the cockpit pitch bearings installed in each blade root and the hub joints, the main secrets within the internal drive system bearings cylindrical roller bearings, tapered roller bearings and high-quality self-aligning roller bearings. Each wind turbine equipment with a yaw bearing and three sets of pitch bearings.
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