Common causes of motor vibration and countermeasures
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1. Bearing misalignment: Misalignment of the unit or bearing wear. Remedial measures: Realign the concentricity of the unit, and adjust or replace the bearings. 2. Stator-rotor friction: uneven air gap or bearing wear. Remedial measures: Readjust the air gap, adjust or replace the bearings. 3. The rotor must not stop at any arbitrary position or have unbalanced power. Remedial action: Re-check the static and dynamic balance of the rotor. 4. Axial looseness: Loose screws or improper installation. Remedial action: Tighten the screws and check the installation quality. 5. Foundation vibration: Poor foundation stiffness or loose corner screws. Remedial measures: Reinforce the foundation or tighten the bottom corner screws. 6. Unstable three-phase current: reduced torque, fault in the rotor bars or end rings. Remedial measure: Inspect and repair the rotor bar slots or end rings.
The above are some common causes of motor vibration and the corresponding countermeasures. In practical operation, it is necessary to conduct a comprehensive analysis and assessment of the specific situation, and take appropriate repair measures to ensure the proper operation of the motor and reduce vibration. .