Pitch and yaw

Slewing ring bearings are generally used in the pitch and yaw locations of a wind turbine, to enable the blades to rotate smoothly. These bearings can support extremely heavy loads at slow speeds. They allow the transmission of both axial and radial forces, as well as accommodating tilting moments.

Main shaft

Roller bearings are commonly found in the main shaft of a wind turbine. Spherical roller bearings are often used in this area thanks to their ability to handle angular misalignment. Cylindrical roller bearings are also frequently used in conjunction with tapered roller bearings to provide superior combination load capacity.

Gearbox

The gearbox of a wind turbine is often subjected to high speeds, as well as challenging atmospheric conditions. There are numerous different bearing designs that can be found in the gearbox of a wind turbine, but generally a combination of cylindrical roller bearings, tapered roller bearings and ball bearings are used, depending on the speed and load requirements.