Significantly increase the service life of your motor bearings by reducing damage with CoolBLUE® Inductive Absorbers. Protect your motors to prevent costly plant production downtime.


Maintaining the efficiency and longevity of motor bearings is crucial for minimizing downtime and reducing maintenance costs. CoolBLUE inductive absorbers offer an innovative solution by significantly cutting down high-frequency currents that damage motor bearings. We’ll explore how CoolBLUE® technology works, its benefits, and why it’s so effective for industries relying on Variable Frequency Drive (VFD) systems.


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What is CoolBLUE®?

CoolBLUE® is a common mode suppression choke that absorbs high-frequency currents produced by VFD systems. Made from nanocrystalline material NANOPERM®,

CoolBLUE® ensures the longevity of motor bearings by reducing these damaging currents by 65-80%. Unlike traditional shaft grounding devices, CoolBLUE® provides a zero-maintenance, long-lasting solution.

Benefits of Using CoolBLUE®

1. Increased Service Life of Bearings

CoolBLUE® technology helps extend motor bearings’ service life by preventing frosting, lubrication breakdown, and electrical discharge caused by high-frequency currents.

2. Cost-Effective

With a one-time installation that takes just minutes, CoolBLUE® reduces the need for frequent maintenance and replacements, thus saving time and money.

3. Versatility

Suitable for a wide range of applications including HVAC, paper manufacturing, automotive, renewable energy, and more, CoolBLUE® is adaptable to various industrial needs.


How CoolBLUE® Works

CoolBLUE Nanotech Kit Fully Installed Example

CoolBLUE® absorbers function by slowing down high-frequency currents to safe levels, thus preventing them from reaching the motor bearings. This non-mechanical method effectively ensures that the absorbers do not wear out over time, providing a reliable long-term solution.


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Installation and Maintenance

One of the standout features of CoolBLUE® is its ease of installation and zero maintenance requirement. Once installed, CoolBLUE® operates seamlessly without needing replacements or regular check-ups, making it a hassle-free addition to your maintenance toolkit.

Applications of CoolBLUE®

CoolBLUE® is versatile and can be used across various industries:

  • HVAC Systems: Enhances the performance and reliability of heating, ventilation, and air conditioning systems.
  • Manufacturing: Ideal for paper, automotive, and other manufacturing sectors where VFD systems are prevalent.
  • Water Treatment: Water treatment plants can suffer from bearing failures due to high-frequency common mode current, resulting in subsequent fluting.

Read More on Common Uses and Case Studies 


CoolBLUE® inductive absorbers represent a significant advancement in maintaining motor efficiency and extending the life of motor bearings. By reducing high-frequency currents, CoolBLUE minimizes unscheduled downtime and maintenance costs, making it an essential investment for industries relying on VFD systems.

Still need more information? Contact us to discuss your requirements!


1. What makes CoolBLUE® different from shaft grounding devices?

CoolBLUE® offers a non-mechanical solution that absorbs high-frequency currents, providing longer-lasting protection without regular maintenance.

2. How long does it take to install CoolBLUE®?

Installation is quick and can be completed within minutes, offering immediate benefits with minimal downtime.

3. Can CoolBLUE® be used in any motor?

Yes, CoolBLUE® is versatile and can be used in various motors, including those in the HVAC, manufacturing, waste water, food and dairy production, and renewable energy sectors.

4. Does CoolBLUE® require regular maintenance?

No, once installed, CoolBLUE® operates without the need for regular maintenance or replacements.

5. How does CoolBLUE® help in reducing maintenance costs?

By extending the service life of motor bearings and preventing damage from high-frequency currents, CoolBLUE® reduces the need for frequent repairs and replacements, thereby cutting down overall maintenance costs.


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