Diagnosing Servo Motor Noise and Troubleshooting

Diagnosing Servo Motor Noise and Troubleshooting
Diagnosing Servo Motor Noise and Troubleshooting

Servo motors are essential in various industrial applications, providing precise control and reliable performance. However, sometimes they can exhibit undesirable noise, which may indicate underlying issues. This blog will explore common causes of servo motor noise and effective troubleshooting techniques to resolve them. If you are facing servo motor noise issues, don’t worry! ACS Industrial Services is here to help you get your motors running smoothly again.

Understanding Servo Motor Noise

Servo motor noise can manifest in different forms, such as humming, buzzing, or clicking. Identifying the type of noise can give valuable clues about the root cause. Some typical causes of servo motor noise include:


Misalignment in a servo motor can be a significant source of noise. This usually happens when the shafts of the motor and the driven equipment are not properly aligned. Misalignment can lead to excessive vibration, causing increased wear and tear, reduced efficiency, and increased noise levels. Regular inspection and proper motor alignment can mitigate this issue, ensuring your operations remain efficient and noise-free.

Bearing Failure

Bearing failure is another common cause of servo motor noise. The bearings in a servo motor enable smooth, frictionless rotation of the motor shaft. However, if these bearings wear out or become damaged, they can create a grinding or squealing noise. This is an indication that the bearings need urgent replacement. 

Excessive Load

An overloaded servo motor can generate a loud humming or buzzing noise, a clear sign of excessive strain. If a motor is pushed beyond its operational limits, it will not only produce noise but can also experience a decrease in efficiency and a shortened lifespan. 

Improper Tuning

Improper tuning is a lesser-known but equally important cause of servo motor noise. The servo drive must be properly tuned to match the motor’s performance characteristics. If not, it can cause the motor to behave erratically, leading to excessive noise and vibration. 

Troubleshooting Servo Motor Noise

Servo motor noise can be troublesome, but you can address it effectively with the right troubleshooting approach and professional assistance. To manage servo motor noise effectively, follow these troubleshooting steps:

  • Visual inspection: Perform a thorough inspection of the servo motor and its components. Look for signs of physical damage, loose connections, or misalignment.
  • Check bearings: Test the motor’s bearings for smooth rotation and signs of wear. If the bearings are worn out, replace them with high-quality, compatible ones.
  • Lubrication: Ensure the motor’s bearings and other moving parts are adequately lubricated. Use the manufacturer-recommended lubricants to maintain optimal performance.
  • Electrical grounding: Verify that the servo motor’s electrical grounding properly minimizes electrical noise interference.
  • Load analysis: Assess the load on the servo motor to ensure it matches the motor’s specifications. Overloading can strain the motor and cause noise.
  • Motor tuning: Re-evaluate the motor tuning parameters to optimize performance and reduce noise generation.

Contact ACS Industrial Services for Servo Motor Troubleshooting and Repair

Don’t let it hamper your operations when dealing with servo motor noise issues. If you cannot identify the cause of the noise or the troubleshooting steps don’t resolve the problem, it’s best to consult professionals. Turn to ACS Industrial Services for reliable servo motor diagnostics and repair. Our team of skilled technicians has extensive experience diagnosing and resolving servo motor noise problems. We use advanced techniques and high-quality replacement parts to ensure your servo motors operate at peak performance.

Don’t let servo motor noise slow down your productivity. We can repair servo motors and get them back to you within 7-15 days, plus we offer a Rush Repair Service with shipping back to you between 2-5 days if it’s an emergency that requires immediate attention. Visit our website to learn more about our comprehensive industrial repair services. Contact us through our contact form or at 800-605-6419.