Ultra-low temperature bearings are a special type of bearing used for working in extremely low temperature environments. Due to its special materials and design, ultra-low temperature bearings can maintain stable operation at extremely low temperatures. Monton Precision Bearing, a manufacturer of ultra-low temperature bearings, will explore in detail the working temperature range of ultra-low temperature bearings.

1、 The definition of ultra-low temperature bearings

Ultra-low temperature bearings refer to bearings that operate in extremely low temperature environments, typically below -150 ℃. This type of bearing usually uses special materials and designs to ensure performance and stability at extremely low temperatures. Ultra-low temperature bearings are widely used in aerospace, liquefied natural gas, cold chain logistics and other fields.

2、The materials for ultra-low temperature bearings

The material selection of ultra-low temperature bearings is crucial. In order to adapt to extremely low temperature environments, ultra-low temperature bearings usually use low-temperature resistant materials such as stainless steel and nickel based alloys. These materials can maintain good mechanical properties and stability at extremely low temperatures, ensuring the long-term stable operation of bearings.

3、The esign of ultra-low temperature bearings

The design of ultra-low temperature bearings is also very important. In addition to conventional rolling elements and cages, special consideration should also be given to the selection of lubricants and sealing performance for ultra-low temperature bearings. At extremely low temperatures, lubricants may solidify or thicken, so special lubricants such as grease or solid lubricants are usually used for ultra-low temperature bearings. In addition, sealing performance is also crucial to prevent external impurities and gases from entering the interior of the bearing.

4、The working temperature range of ultra-low temperature bearings

The working temperature range of ultra-low temperature bearings varies according to different application fields. In the aerospace field, the operating temperature range of ultra-low temperature bearings is usually between -150 ℃ and -270 ℃. In the field of liquefied natural gas, the working temperature range of ultra-low temperature bearings is usually around -163 ℃. In the field of cold chain logistics, the working temperature range of ultra-low temperature bearings is determined by specific needs, generally between -40 ℃ and -70 ℃.

5、The application of ultra-low temperature bearings

Ultra-low temperature bearings are widely used in aerospace, liquefied natural gas, cold chain logistics and other fields. In the aerospace field, ultra-low temperature bearings are used in key components such as gesture control and propulsion systems of satellites and rockets. In the field of liquefied natural gas, ultra-low temperature bearings are used in the transmission system of liquefied natural gas storage and transportation equipment. In the field of cold chain logistics, ultra-low temperature bearings are used in the transmission system of refrigeration equipment to ensure stable operation in low-temperature environments.

6、Summary

Ultra-low temperature bearings, as a special type of bearing, can maintain stable operation in extremely low temperature environments. The working temperature range varies according to different application fields, generally below -150 ℃. In order to adapt to extremely low temperature environments, ultra-low temperature bearings use special materials and designs to ensure their performance and stability. The application of ultra-low temperature bearings is extensive, involving aerospace, liquefied natural gas, cold chain logistics and other fields, making important contributions to the development of modern industry.