Materials for Wind Permanent Magnet Generators
Bearings
To get the correct efficiency one has to make sure that all the necessary measures are taken, like using the correct type of bearings. Commonly used sealed ball bearings should be correct in size and be able to withstand axial loads.
Sealed Ball Bearings
This type of bearing covers the balls and provides a greater degree of protection because the shield on the sealed ball bearing actually comes into contact with the inner race. But this comes with a price; the high contact pressure of the seal against the rotating inner race increases the friction and torque losses and can cause a buildup of heat.
