The use of variable frequency drives on electric motors is the cause of numerous failures, linked to the flow of high-frequency currents inside the bearing. These eddy currents can cause premature damage to components and compromise the reliability of the equipment.  To address this issue, NTN has developed the MEGAOHMTM range, a range of insulated bearings designed to effectively protect electric motors against the effects of eddy currents.

A comprehensive and high-performance range

NTN is expanding its MEGAOHMTM range to meet an even wider range of requirements. This expansion involves the addition of bearings fitted with a sheet-metal cage, suitable for small motors. These complement the brass-cage version, which is intended for larger motors.  

 The MEGAOHMTM bearing offers, above all:  

- High-performance electrical insulation thanks to a ceramic coating  

- Electrical resistance of up to 3000 VDC  

- Two ranges available depending on the application: sheet metal cage and brass cage  

- Compatibility with standard bearings, facilitating integration

The availability of the MEGAOHMTM range 

The availability of the range across all standard part numbers is a real advantage for coil winders and electric motor maintenance professionals, who often need to get hold of the right part quickly to ensure repairs are carried out as promptly as possible.