Wind turbine gearbox bearing common failure modes and solutions

Design a variety of wind turbine gearboxes, but basically the line star and parallel level. Planet carrier for input, internal ring gear is fixed, the sun gear output and passed to the parallel class design, for example, analysis shows that a common bearing failure modes and the corresponding solutions.

The common failure modes:

The selection and application of the planet carrier bearings and spindle design. Common planet carrier bearing is full roller and cylindrical roller bearings. If the spindle bearing selection Spherical roller bearings, both the 3:00 single-aligning roller spindle bearings supporting design or 4:00-bearing design of two self-aligning roller spindle bearings, aligning roller bearings radial and axial clearance exists, when the fan in the brake or the other appears alternating axial load conditions change direction, the spindle behind the planet carrier connected in the axial direction may be a rocky ledge. If you are using cylindrical roller bearings due to its inner and outer rings relative displacement in the axial direction as the planet carrier bearing from the spindle axial run out will pass to the planet carrier of the cylindrical roller bearings, If the run out is large enough, the impact of cylindrical roller bearings. Moreover, since the internal ring gear and deceleration of the chassis body is fused, the planetary gear and planet carrier with the axial movement will cause wear on the tooth surface to 

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