The main bearing of wind power generation belongs to the field of wind turbines. The characteristics are: upper outer ring of the main bearing, lower outer ring of the main bearing, thrust cylindrical rollers, cage, and inner ring of the main bearing. There are two rows of thrust cylindrical rollers on the inner side of the lower outer ring of the main bearing, and a single row of radial cylindrical rollers on the outer side of the inner ring of the main bearing. The cylindrical rollers are placed on the cage. This utility model eliminates the main shaft, greatly reducing the impact of the original rigid shaft on the gearbox and generator, extending the service life of the gearbox and generator, and achieving good force transmission, making it easy to maintain and disassemble. And it can withstand large axial and radial loads, adapt well to the working conditions of non spindle wind turbines, and meet their stress requirements.
