Main Shaft of A Wind Turbine

During operation, this component needs to bear three types of loads: axial force, radial force, and bending moment. It generally adopts a bearing arrangement of "one end fixed and one end floating": the fixed end is supported by preloaded double-row tapered roller bearings, which can reduce axial runout by 75%; the floating end only bears radial loads. Wear repair methods include traditional welding repair, electroplating process, and on-site molding technology of polymer composite materials. The latter reduces maintenance costs through room-temperature curing of the mold via a die. Main shafts are divided into two types: forged main shafts and cast main shafts. Forged main shafts have excellent mechanical properties, while cast main shafts are suitable for the trend of large-scale wind turbines.

Timothy Holding Forging Industry