Shaft Grounding Rings for Electric Vehicles
EV motors are controlled by inverter drives to allow efficiency and precise speed and torque control. Unfortunately, these drives produce a stray voltage on the motor shaft, which can discharge through the motor bearings, causing electrical damage. AEGIS® Shaft Grounding Rings protect the motors by dissipating stray shaft voltage before it can arc through the bearings. AEGIS® EV Rings and EVO Rings are custom engineered to meet the unique challenges of automotive applications.
Benefits of Aegis Shaft Grounding Technology
- Protects bearings with low impedance for excellent stray voltage mitigation
- Protects driveline components (e.g. transmission gear teeth)
- Outstanding low-friction contact for high mechanical efficiency
- Low wear rate and excellent long-term reliability
- Compatible with peak shaft surface speed of at least 80 m/s
- Optimized and standardized design for automated manufacturing
- Customizable to the application
- Low space requirements
- Light weight construction
- Pressfit assembly
AEGIS® EV Ring
- for dry applications
- 360° conductive microfibers
AEGIS® EVO Ring
- for oil-exposed applications
- 360° conductive microfibers and hybrid fibers for improved conductivity
To learn more about protecting EV motors with AEGIS® rings, download our EV Application Sheet.
And for a deeper dive, download our EV white paper.
