Current-Insulating Bearings: Preventing rolling bearing damages from current flow

Current passage poses a risk to rolling bearings in many applications

Whether in rail, wind power, or industrial settings, electric motors and generators face a common risk: current passing through them can harm rolling bearings, causing damage and premature failure. This is especially true in systems controlled by frequency converters.

However, using current-insulating bearings can prevent such failures, saving on repair costs and production downtime.

To prevent bearing damage which may look like:

Uniformly matt grey marks on raceways and rolling elements

Fluting or periodic patterns running in the direction of rolling on areas of the surface of different depth

6216-2RSR-J20AB-C3
Insutect deep groove ball bearing with (contact) sealing washer on both sides and internal clearance C3

6330-M-J20C-C4
Insutect deep groove ball bearing with brass cage and internal clearance C4

NU214-E-XL-M1-J20AA-C4
Insutect cylindrical roller bearing in XL quality with brass cage and internal clearance C4

At Schaeffler, we strive to be your partner in mobility and motion. We are a global company with a local presence throughout the world. With over 40 locations in Asia Pacific, we work with our customers, partners, and society to shape the future of mobility and motion.

If you have any immediate questions or concerns, please feel free to reach out to us at marketing@bearing.ph