过去国内外立式水轮发电机组、抽水蓄能机组和水泵电动机组的推力轴承,主要是采用钨金扇形巴氏合金轴瓦。这种推力轴瓦随着机组单机容量的不断增大,其负荷也越来越大,有的机组的轴向负荷已达35MN(3500t级)以上,使得推力轴承的可靠性问题显得越来越突出。例如前苏联在1956～1975年的20年问,推力轴 In the past at home and abroad vertical hydroelectric generating sets, pumped storage units and pump motor thrust bearings, mainly the use of tungsten-fan-shaped babbitt bearing. The thrust bearing with the single unit capacity continues to increase, the load is also increasing, and some units of the axial load has reached 35MN (3500t level) above, making the thrust bearing reliability issues become more and more prominent . For example, the Soviet Union asked in 20 years from 1956 to 1975, the thrust axis