wind power bearing technical characteristics

wind power bearing technical characteristics: a yaw bearing mounted on a tower and the cockpit of the connecting portion, the pitch bearing mounted in the hub and connected to the root portion of each blade. Each wind turbine with a yaw bearing and three pitch bearings. Yaw, pitch bearing rings of material selection 42CrMo, heat treatment with the overall quenching, raceway surface hardening. Yaw, pitch bearing force situation is complex, and to withstand shock and vibration is relatively large, and therefore, requires both bearings to withstand the impact, and can bear a greater load. Wind turbines host life requirements of 20 years, a larger bearing installation costs, thus requiring yaw, pitch bearing life expectancy should reach 20 years. Bearing rings substrate hardness 240-280HB, able to withstand impact without plastic deformation, while the raceway surface hardening hardness 55-62HRC, increase contact fatigue life, thus ensuring long life bearing requirements. Wind power bearing parts cleaning because cross, three row roller slewing bearing inner ring special technology: To prevent cross, after three-row roller slewing bearing inner heat deformation, must be working in pairs when turning, the race back to back processing, do not be cut off before the heat treatment, heat, cut molding.