In 2017, the cumulative sales of new energy passenger vehicles worldwide exceeded 1.22 million units, a year-on-year increase of 58%. Among them, the sales volume of new energy passenger vehicles in China exceeded 578000 units, accounting for as much as 47.37%. With the country\'s deepening promotion of energy conservation, emission reduction, and environmental protection, the popularization of new energy vehicles has become an irreversible market trend.

With the widespread promotion of new energy vehicles, the bearing industry is facing performance improvement tests

As a result, more and more multinational car companies have formulated corresponding development strategies in the Chinese market. Not long ago, Ford Motor Company announced plans to move 70% of its electric vehicle production lines to China by 2025. Tesla, which will build a factory in China, also has high hopes for the Chinese market. The company has proposed that in a few years, Tesla\'s sales in China will account for a significant share of its global sales.

With the surge in sales of new energy vehicles, the demand for drive motors in the market is rapidly increasing. It is predicted that the global market size of drive motors will reach 4.4 billion US dollars in 2020.

New energy vehicle drive motors require specialized bearings. Compared with traditional cars, new energy vehicles require the motor to have a high limit speed, while also adapting to low temperature requirements of -40 ℃ and high temperature requirements of over 150 ℃. They also require the bearings to have maintenance functions and adapt to axial impacts caused by frequent starting and stopping.

The market for specialized bearings for new energy vehicles is booming, posing a severe challenge to China\'s bearing industry. Yu Zhizheng, a researcher level senior engineer at Beijing Automotive Group Co., Ltd., and Chen Guangzu, Secretary General of China Automotive Industry Consulting Committee, both agree that China\'s bearing industry should meet this challenge, actively develop and produce new energy vehicle specific bearings, and take the initiative in market competition.

They optimized the internal structure of the bearings and used simulation and lubrication technology to solve the problems of bearing heating and lubrication under high speed and high temperature, forming a new energy vehicle drive motor bearing design theory and method, ensuring that the special bearings have high precision, low centrifugal force, low friction and other characteristics, and can meet the comprehensive performance requirements of low starting torque, high speed and rapid transmission, durability and high reliability of new energy vehicles. In addition, the technology center has also developed specialized high-speed and high-temperature performance, starting torque performance, durability performance, and grease performance test benches for new energy vehicle bearings, overcoming difficulties such as loading programs, high speeds, and temperature rise on the test bench. It has formulated test specifications for high-speed, high and low temperature, durability, grease performance, and other aspects of new energy vehicle bearings, forming a series of test standards for new energy vehicle bearings.

In fact, high-speed drive motors for new energy vehicles also require high precision in bearing production. SKF Sweden is a leading figure in the global bearing technology and manufacturing industry. Yu Zhizheng introduced, \"The speed of new energy vehicle drive motors is fast, and high requirements are placed on bearing accuracy and noise performance. The precision, reliability, and durability of domestic new energy vehicle drive motor bearings are not as good as SKF\'s products in Sweden.\" Chen Guangzu believes that the domestic bearing industry lacks research on the performance of bearings, especially new energy vehicle specific bearings; Compared with developed countries, there is a significant gap in high-end bearing materials in China.