Wind turbine bearings

  Yaw bearing assembly (660PME047)
Turbine yaw bearing assembly is guaranteed timely tracking changes in wind direction. Fan slewing ring, yaw acceleration ε will have an impact torque M = Iε (I inertia of the cabin). Yaw speed Ω higher, the greater the acceleration ε. Because I very large, so that the already great impact multiplied. In addition, the fan if the process in motion deflected yaw gear will withstand considerable gyroscopic moment, likely to cause fatigue failure of the yaw bearing.
According to the mechanical characteristics of the fan bearings, yaw bearing a "zero clearance" Designing a four-point contact ball bearings, the channel for special design and processing, can withstand large axial load and moment loads. Yaw gear to choose the right materials, modulus, hardness of tooth surface contours and to guarantee the life and the matching between the driving gear. Meanwhile, we must adopt appropriate treatment measures to improve the strength of the tooth surface, the bearing has good abrasion resistance and impact resistance.
Fans exposed to the wild, so the sealing performance of the bearing has strict requirements that must form the bearing seals to optimize the design of the bearing sealing performance simulation study, the bearing life and the life of the same fan. Fan mounted on the altitude of 40m, expensive assembly and disassembly, so there must be a very high level of reliability, generally require 20 years of life, coupled with the bearing structure is complex and therefore must be installed prior to the test computer simulation tests to ensure that the bearing design parameters correctly.