开滦集团范各庄矿新井主井提升机采用ZJD250/120-12型电动机,其额定功率为2 800 kW,电动机总质量为131 000 kg,电动机转子质量为48 000kg,转子直径为2.5 m,转速为0~120 r/min,定子和转子间隙为10 mm,转子轴头两端直径分别为?560mm和?660 mm。电动机转子轴支撑为液体动压润滑的滑动轴承,滑动轴承材料为巴氏合金,轴瓦外形为剖分式结构,在低速重载工况下运行。因设备已使用 The Kailuan Fanchuang mine new well main shaft hoist adopts ZJD250 / 120-12 motor with rated power of 2 800 kW, motor total mass of 131 000 kg, motor rotor mass of 48 000 kg and rotor diameter of 2.5 m, The rotating speed is 0 ~ 120 r / min, the gap between stator and rotor is 10 mm, the diameters of both ends of the rotor shaft head are respectively? 560mm and? 660mm. The rotor shaft of the motor is supported by a hydrodynamic lubricating sliding bearing. The sliding bearing material is Babbitt alloy. The bush has the shape of a split structure and operates under low speed and heavy load conditions. Because the equipment is used