前言水轮机主轴借助两端的法兰,把水轮机转轮和发电机连接起来,是水轮发电机组的重要部件之一。随着水轮发电机组功率的不断提高,主轴的尺寸也越来越大,并多采用带锥与双圆弧的过渡形式。在机组运行时,主轴承受巨大的轴载(即水推力和转轮体等重量)和扭 Introduction Turbine main shaft with flanges at both ends, the turbine runner and generator connected, is one of the important components of the hydro-generator set. With the continuous improvement of turbine generator power, the size of the spindle is also getting larger and larger, and the transitional form with the cone and the double arc is often used. In the unit operation, the main bearing by a huge axle load (ie water thrust and wheel body weight) and torsion