Learning Center

Shaft Grounding Rings - The Necessary Accessory for Your Motor and VFD

By Dan Hansen on 15th Jul 2014

Why do you need a shaft grounding ring (SGR)? Motors that are operated with a variable frequency drive (VFD) are more susceptible to bearing failure. In standard generated sine waves, the voltage is balanced; this means that t …

read more

Bearing Currents

By Craig Hartman on 20th Mar 2014

Courtesy AegisMotor bearings have a higher failure rate when the motor is run with a VFD. This is due to currents in the motor bearings. The classic solution to this problem is insulated bearings. Insulated bearings insulate the b …

read more