Zhejiang Tongtao Bearing Co., Ltd.

 

The application characteristics of high-temperature and high-speed deep groove ball bearings mainly include:

1) Long life. The service life requirement has been increased from 8 years and 100000 kilometers to 10 years and 300000 kilometers.

2) High rotational speed. The most commonly used drive motor rotor support bearings for passenger cars, such as 6206-2RS and 6207-2RS, have increased their average rotational speed from 12000 r/min to 16000 r/min. The latest requirement is 24000 r/min; The application speed of electric vehicles represented by Tesla and BYD has reached 20000 r/min, and the dm · n value has exceeded 1.1 million, reaching more than three times the limit speed.

3) Accelerate rapidly, increasing the 100-kilometer acceleration from 20 to 30 seconds to 2 to 3 seconds.

4) High impact force, up to 30g.

5) High sealing performance requirements, including high requirements for sealing performance such as grease leakage prevention, water resistance, and dust prevention.

 

In order to meet these requirements for high-temperature and high-speed deep groove ball bearings, compared with previous similar bearings, they need to have higher accuracy, lower vibration and noise, lower friction torque, impact resistance, good sealing performance, and so on.

 

 

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