Low temperature bearing refers to the design of special materials and structures to reduce the friction coefficient, thereby reducing friction and heat generation, so that the bearing can still maintain a low temperature during long-term operation.

Bearings whose working temperature is lower than -60℃ are low temperature bearings, which are mainly used in various liquid pumps.

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. When the working limit temperature is required to be -253℃, 6Cr14Mo material can be selected but it must be used in a vacuum environment.