With the rapid popularization of new energy vehicles, many car owners and technicians have found that bearings in electric vehicles fail faster and have higher requirements, and standard fuel vehicle bearings cannot be directly replaced. The working characteristics of motors, electronic controls, and batteries in new energy vehicles expose bearings to completely different working conditions, making dedicated bearings a necessity.

More critically, there is the issue of high-voltage electrical corrosion. With the popularization of 800V high-voltage platforms, shaft current generated by the motor breaks through the lubricating grease film, forming electric erosion pits and spots on the raceways, leading to noise, vibration, and premature failure. Therefore, NEV bearings must use insulation coatings, hybrid ceramic balls, and electrically insulated structures to block current paths at the source.

In addition, electric vehicles have extremely high requirements for NVH quietness and lightweight design for longer range. Bearings need finer precision tolerances, low-friction designs, lightweight cages, and adaptability to oil-cooled and water-cooled heat dissipation environments.