The AEGIS SGR-3.375-UKIT Bearing Protection Ring is a heavy-duty grounding solution engineered to protect large electric motor bearings from electrical discharge damage caused by variable frequency drives (VFDs). Designed for 3-3/8" (3.375") shaft diameter motors with 444T, 445T, 447T, and 449T frame sizes, this ring provides a reliable path for harmful shaft currents to ground, preventing bearing pitting, fluting, and premature failure. Ideal for both OEM and retrofit applications, it ensures optimal motor performance, reduced downtime, and long-term operational reliability. Key Features Prevents bearing damage caused by VFD-induced electrical discharges Designed for 3-3/8" (3.375") shaft motors Fits NEMA 444T, 445T, 447T, and 449T frame motors Extends motor and bearing lifespan Maintenance-free, long-lasting construction High-performance conductive microfiber technology Durable aluminum housing for industrial-grade protection Includes universal mounting kit with hardware and conductive grease Specifications Part Number: SGR-3.375-UKIT Brand: AEGIS Type: Bearing Protection Ring / Shaft Grounding Ring Shaft Diameter: 3-3/8" (3.375") Motor Frame: 444T, 445T, 447T, 449T Material: Aluminum housing with conductive microfibers Application: Shaft grounding for motors operated by variable frequency drives (VFDs) Installation Kit: Includes mounting brackets, screws, and conductive grease Compatible Models: Commonly used with 3-3/8" shaft motors from Baldor, Marathon, Leeson, WEG, Siemens, and ABB ? and more. Why Choose This Item Select the AEGIS SGR-3.375-UKIT for robust bearing protection, proven grounding performance, and industrial reliability. Trusted across industries, this AEGIS ring prevents costly bearing failures, reduces maintenance, and ensures continuous, efficient operation of your large VFD-driven motors.