What causes electric motor vibration?
Main Causes of Electric Motor Vibration The main causes of motor vibration include, but are not limited to an electronic or mechanical imbalance, faulty gears, failed bearings, loose foundations, wear and tear or misalignment. Imbalances: An imbalance is like a weighted spot in the rotating component of a motor.
What is motor vibration analysis?
Vibration analysis is a process of looking for anomalies and monitoring change from the established vibration signature of a system. The vibration of any object in motion is characterized by variations of amplitude, intensity, and frequency.
How is electric motor vibration measured?
You should take housing vibration measurements in three planes (vertical, horizontal, and axial) on both bearing housings, as shown in the Figure on the right. Take shaft vibration measurements in two directions (90° apart) on one drive end of the motor.
How do you stop an electric motor from vibrating?
An easy method to reduce vibration is to install a clean damper on the rear shaft of the motor. Clean dampers are basically hermetically sealed plastic cases with an inertia body packed with silicon gel. The extra inertia and silicon gel help absorb the vibration and provides a stable damping effect.
How are vibration levels measured in electric motors?
Only the engine support, side pulley, according to the measurement and directions Vertical Axial, vibrométricos the levels are considered good / acceptable. data collected and presented in Table I., It reveals that the recorded levels are vibrométricos, mostly, considered “Severe” according to the evaluation criteria adopted.
Are there vibration diagnostics for industrial electric motor drives?
Vibration Diagnostics for Industrial Electric Motor Drives The induction motor is the most widely employed industrial electric-drive. Identifying the vibration problems that can occur in induction-motor drives have an added complexity due to the rotating magnetic-fields in the machine.
Can a vibration problem be a motor problem?
Vibration problems can vary from a mere nuisance to an indication of imminent motor failure. With a solid knowledge of motor fundamentals and vibration analysis, you can usually identify areas of concern well before they lead to a failure.
What is the natural frequency of electric motors?
Figure 12 – vibration analysis in electric motors – Analysis resonance vibrations – Figure transfer and phase angle function recorded during impact with the instrumented test hammer (Vertical direction) Toward Horizontal, The same tests also revealed a natural frequency 20,5 Hz (1230 cpm), As can be seen in Figure 13.
