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Solutions for rigid and flexible arrangements

Wind turbines with a gearbox are generally categorized as rigid or flexible.

Flexible systems are those with 3-point suspension or 2-point suspension. To support the main shaft, a two-point design uses two bearings, which are typically spherical roller bearings. In this design the gearbox acts only as a torque converter. In a three-point rotor bearing arrangement, one spherical roller bearing and the gearbox itself support the rotor shaft.

Rigid arrangements are those with 1-point suspension, or no shaft.

Whatever design you rely on, SKF has the expertise and solutions you need to:
  • Improve performance
  • Increase reliability
  • Reduce maintenance


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