spirowind saw the problem in the use of a planetary gear that should work smoothly in a very compact generator. To use very strong neodymium magnets that spin near rotating planetary wheels, non-magnetic ball bearings had to be used. Metal ball bearings could have blocked the gearbox due to the magnetic influences.
The use of xiros plastic ball bearings with glass balls was the solution because the copper coils installed in the turbine to generate electricity generated a magnetic field. The use of non-magnetic plastic ball bearings allows the free rotation of all elements around the central shaft at various speeds, both the planet wheels and the magnets; and all this despite very tight installation space.