EST Aegis SGR-1.375-UKIT-1A4 Shaft Grounding Ring Universal Mounting Kit Split Ring Overload Relays & Motor Protection - 1-3/8

The EST Aegis SGR-1.375-UKIT-1A4 is a universal mounting kit featuring a split shaft grounding ring designed to protect electric motor bearings from damaging shaft voltages caused by variable frequency drives (VFDs). This complete kit is engineered for motors with 1.375-inch (1-3/8") diameter shafts and fits NEMA frame sizes 213T and 215T.

How It Works: AEGIS Shaft Grounding Rings provide a reliable electrical path to safely divert harmful VFD-induced shaft voltages away from motor bearings to ground. The ring features conductive microfibers that encircle the motor shaft, creating millions of discharge points that channel damaging currents through the motor frame before they can cause bearing damage. This proven technology prevents premature bearing failure from electrical discharge machining (EDM), pitting, frosting, and fluting.

Split Ring Design: The 1A4 designation indicates this is a split ring configuration, making it ideal for retrofit installations on motors already in service without requiring shaft disassembly. The split design allows the ring to be installed around the shaft and then clamped in place.

Complete Universal Kit Includes:

• One AEGIS split shaft grounding ring for 1.375" shaft diameter
• 16 universal mounting brackets in 4 different styles (4 of each) for maximum compatibility
• 4 flat head screws (5-40 x 3/8")
• 4 socket head cap screws (6-32 x 3/8")
• 4 #6 split lock washers
• 4 #6 flat washers
• 5/64" Allen wrench
• 7/64" Allen wrench

Installation Flexibility: The universal bracket system offers multiple mounting options to accommodate various motor end bell designs. Install using 3 or 4 brackets depending on your specific motor configuration. The kit can be mounted with the included hardware or optionally with AEGIS Conductive Epoxy EP2400. The versatile bracket design avoids interference with slingers or shaft shoulders.

Applications: Essential protection for VFD-driven motors in pumps, fans, conveyors, HVAC systems, manufacturing equipment, and any application where variable frequency drives are used. Prevents costly unplanned downtime and extends bearing life to achieve expected service intervals.

Warranty: AEGIS offers a 2-year extended warranty against bearing fluting damage when rings are installed according to manufacturer's best practices, providing superior protection compared to other shaft grounding solutions.