Search

Bearing Fluting Specialists

Low impedance path for High Frequency Current is critical to solving Bearing Current Issues.

Grounding and High Frequency Current Filtering at the source is the only long term solution.

Stop Bearing Currents at the Source.

Many Variable Speed Drive emit High Frequency Current, which ultimately degrade Bearings, Motor Insulation and cause Lubrication breakdown.
Motor Insulation

How to stop these bearing currents at the source.

Effective grounding is the first step, then mop up the remaining emissions with EMF Cores. They're a permanant solution that don't wear out of fail.
Note: This method stops the High Frequency Current at the source, protecting Motor Insulation.

Watch the Video

Bearing Fluting Damage Suppressed

Bearing Fluting damage is caused by VFD (VSD) drive emissions which can be effectively suppressed by the use of EMF Cores.

It is essential that proper grounding of the Motor is verified back to the Drive and beyond to the Star point of the transformer. Without this verified grounding the High Frequency Currents don't have a low impedance path to the MEN (Multiple Earth Neutral) and the attack will continue.

EMF Cores stop the attack at the source and will not wear our. They protect the Motor Insulation which Insulated Bearing, and Brushes don't.
Stopping the emissions at the source stops radiated EMF, and cross talk between cables in the same tray.

3Phi Reliability stocks these EMF Cores and can advise on fitting procedure.  https://www.3phi-reliability.com/contact-us

EMF Cores Filter Emissions from 20kHz Upwards. Power and Communications unaffected.

The Impedance of EMF Cores consume High Frequency Current emitted from VFD (VSD) drives. The nano crystalline magnetic material is many times more effective than ferrite cores.
Stop the Attack at the Source and protect Motor Insulation, Lubrication, and Bearings.

EMF Cores
Cost effective 99.2% reduction in drive emissions.
Case Study

emfcores.pdf

Download