The main bearing of wind power generation belongs to the field of wind power generator. Features are: main bearing upper outer ring, main bearing lower outer ring, thrust cylindrical roller, cage, main bearing inner ring, main bearing inner ring is provided with two columns of thrust cylindrical roller, main bearing inner ring is provided with a single row of centripetal cylindrical roller, cylindrical roller is placed on the cage. The utility model reduces the main shaft, greatly reduces the impact of the original rigid shaft on the gearbox and the generator, prolongs the service life of the gearbox and the generator, realizes the force transfer well, and is easy to maintain and disassemble. It can bear large axial force and large radial load, and can be well adapted to the working condition of wind turbine without spindle, and meet its force requirements.
