Shaft grounded

Baldor-Reliance shaft grounded motors protect against VFD-induced bearing damage, ensuring longer life and lower maintenance.

Built-In Protection for VFD-Driven Performance

Baldor-Reliance shaft grounded motors are designed to mitigate bearing damage caused by shaft currents commonly generated in variable frequency drive (VFD) applications. These motors feature an integrated shaft grounding device, typically a conductive microfiber ring or carbon brush, mounted directly to the motor frame. This device provides a low-impedance path to safely divert induced shaft voltages away from the bearings, reducing the risk of electrical discharge machining (EDM), fluting, and premature bearing failure.

Technical data

Proper motor grounding is essential to prevent premature bearing failure, avoiding costly maintenance and potential facility downtime. The most common and cost-effective method is a shaft grounding device mounted directly to the motor frame with a grounding brush or ring.

Up to 100Hp

Power range 1 - 100Hp (0.75 - 75 kW) -G, 1 - 50Hp (0.75 - 37 kW) -BG

Insulation Class H

for increased protection on inverter use

Internal Shaft grounding

ring or brush for bearing current mitigation

Warrant 3-year

on NEMA Premium efficient motors

Meets NEMA Premium®

efficiency requirements

Protection IP22 | IP44

for indoor and outdooor use

Explore the key benefits

Shaft grounding devices protect motor bearings from VFD-induced shaft currents to extend motor life and reduce downtime - and offer peace of mind.

Inverter Duty

Suitable for Inverter Duty per NEMA MG1 Part 31.4.4.2

Shaft Grounding*

*Internally mounted shaft grounding ring (-G suffix) or carbon brush (-BG suffix)

Versatile

Cast Iron / Steel band options allows you to choose the best option for the application and environment

Energy Efficient

Baldor-Reliance® motors meet or exceed all efficiency requirements for US, Canada and Mexico regulations.

Extended motor life

Performance enhancing features that make ABB the #1 NEMA motor brand

ABB Ability

Compatible with ABB Ability smart sensor for condition monitoring

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