Self-aligning bearing solutions
Support main shafts and rotor shafts with SKF solutions
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.
Simplicity and integrationThe three-point support design is popular due to its simplicity of design and integration of function. Unlike the two-bearing support concept, the three-point support gearbox must be designed to carry the main shaft loads, rather than just the torque reaction loads.
Both solutions rely on a coupling that clamps the rotor shaft and the gearbox shaft together.