Description
The Aegis SGR-2.125-UKIT AegisSolidRing is a precision-engineered shaft grounding ring designed to protect motor bearings from the damaging effects of electrical discharge caused by Variable Frequency Drive (VFD) induced shaft currents. Sized for a 2.125″ shaft diameter and compatible with NEMA 404/405TS frame motors, this universal kit provides a reliable, low-resistance path to ground — diverting harmful currents away from bearings before they can cause pitting, fluting, and premature bearing failure.
As VFDs become standard in HVAC and industrial motor applications, shaft current damage has emerged as a leading cause of early motor failure. The AegisSolidRing addresses this problem at the source, extending motor service life and reducing costly unplanned downtime.
Key Features
- Designed for 2.125″ shaft diameter motors
- Compatible with NEMA 404/405TS motor frames
- Universal kit (UKIT) includes mounting hardware for versatile installation
- Provides a continuous, low-impedance discharge path to ground
- Protects bearings from VFD-induced shaft current damage
- Helps prevent bearing pitting, fluting, and premature failure
- Suitable for new motor installations and retrofit applications
Application
Ideal for HVAC systems, pumps, fans, compressors, and other motor-driven equipment operating on Variable Frequency Drives. The SGR-2.125-UKIT is an essential component in any VFD-driven motor installation where bearing longevity and system reliability are priorities.
Why Use a Shaft Grounding Ring?
VFDs generate high-frequency common-mode voltages that can induce currents on motor shafts. Without a proper discharge path, these currents arc through bearings, causing microscopic pitting that leads to bearing noise, vibration, and eventual failure. The Aegis AegisSolidRing provides the discharge path needed to keep bearings protected and motors running at peak performance.
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