２０００年９月 ２６日，我厂一台ＫＡ２５—１型压缩机因吸气端座温度骤升而紧急停车。拆开联轴器，拿掉排气端盖和机械密封，发现阴转子止推轴承外侧的圆螺母锁片断裂，造成圆螺母松动和止推轴承游动。在压差的作用下，阴转子窜向吸气端座，产生剧烈摩擦导致阴转子和吸气端座 September 26, 2000, I plant a KA25-1 compressor due to the inhalation end seat temperature sudden emergency stop. Open the coupling, remove the exhaust cover and mechanical seal, found that the negative rotor thrust bearing outer side of the round nut lock piece rupture, resulting in round nut loose and thrust bearing swimming. Under the effect of pressure drop, the female rotor sprays toward the suction end seat, resulting in violent friction leading to the negative rotor and suction end seat