Low-temperature bearings are not corresponding to high-temperature bearings and are bearings that can operate stably in high-temperature environments. Instead, they are designed to reduce the friction coefficient through special materials and structures, thereby reducing frictional heat and allowing the bearings to remain low-temperature during long-term operation. 

Bearings with operating temperatures below -60 degree are low-temperature bearings. Mainly used in various types of liquid pumps, such as liquefied natural gas pumps, liquid nitrogen (hydrogen, oxygen) pumps, butane pumps, liquid pumps for rocket missiles, spacecraft, etc.

The operating temperature of low-temperature bearings reflects the material technology and processing level of bearing processing. Its measurement is mainly based on the temperature difference between the bearing outer ring and the injected cooling oil during operation.

Cooler operating temperatures mean longer bearing life and higher performance. The world's leading bearing manufacturers rely on their respective advantages and strive to obtain comparative advantages in low-temperature bearings in many fields. Take Timken spherical roller bearings as an example. After rigorous testing, the operating temperature of this company's products is lower than similar products on the market, about 15.5 degrees Celsius, while other internationally renowned brands are above 19 degrees Celsius.

Low-temperature bearings are commonly made of stainless steel bearing steel 9Cr18, 9Cr18Mo, and can also be made of beryllium bronze, ceramics and other materials; under extremely low operating temperature conditions (limit temperature -253 degree ): when the working limit temperature is -253 degree , 6Cr14Mo material can be used But it must be used in a vacuum environment.
Note: When using low-temperature bearings, attention should be paid to burns caused by poor lubrication, so pay attention to selecting appropriate lubricants.