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The oil pump motor also has noise when it is running normally, but these sounds are even. If a series of abnormal noise or vibration occurs, it means there is a problem. Today, Dalan Motor manufacturers will explain the causes of vibration and noise one by one.
(1) The fan blades of the motor are damaged or the screws that fasten the fan blades are loose, causing the fan blades to collide with the fan blade cover. The sound produced by the fan blades increases and decreases with the severity of the impact sound.
(2) Due to bearing wear or shaft misalignment, when the rotor eccentricity of the motor is serious, the stator and rotor will be rubbed together, causing the motor to generate severe vibration and uneven noise.
(3) Due to long-term operation of the oil pump motor, the anchor bolts are loose or the foundation is not strong, and the motor generates abnormal vibration under the action of electromagnetic torque.
(4) The motor used for a long time is due to the lack of lubricating oil in the bearing to form dry grinding operation or the steel ball in the bearing is damaged, so that the pump pump bearing room makes an abnormal sound.
(5) The abnormal noise of the motor in normal operation suddenly appears. When the load is running, the speed drops significantly, and a low roar is emitted. It may be that the three-phase current is unbalanced, the load is too heavy, or the single-phase operation.
(6) If the stator and rotor windings are short-circuited or the cage rotor bar is broken during normal operation of the motor, the oil pump motor will emit a high-low hum and the body will vibrate accordingly.
The abnormal vibration and abnormal sound generated by the oil pump motor are roughly divided into the above 6 points, but when a specific failure occurs, it is necessary to take corresponding elimination measures according to the main reason and the diagnosis method.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
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