The bearings and shaft sleeves of vacuum pumps have unique design characteristics in vacuum environments, with high temperature resistance, corrosion resistance materials, and self-lubricating performance as the core, and stable operation in vacuum environments achieved through precision structures. The following is a specific analysis of the characteristics of vacuum pump bearings and shaft sleeves:
Characteristics of vacuum pump bearings
Material selection: Vacuum pump bearings are often made of corrosion-resistant and high-temperature resistant materials such as stainless steel and ceramics to ensure stable operation under extreme conditions. These materials can resist chemical corrosion and high temperature effects in vacuum environments, extending the service life of bearings.
Structural design: Vacuum pump bearings pay more attention to the optimization of sealing and lubrication system in structural design.
. Due to the inability to rely on traditional lubricating oil for lubrication in a vacuum environment, vacuum pump bearings often use solid lubrication or self-lubricating materials, as well as specially designed sealing structures to prevent gas leakage and the entry of pollutants. This design helps to keep the bearings clean and lubricated, reducing wear and failure.Manufacturing process: The manufacturing process of vacuum pump bearings is more complex and refined, requiring strict control of every link in the production process to ensure the accuracy and reliability of the product.
. This includes precise machining, heat treatment, and assembly processes to ensure that the geometric dimensions, shape, and positional accuracy of the bearings meet the design requirements.Characteristics of vacuum pump shaft sleeve
Integrated design: The shaft sleeve is usually made into a cylindrical sleeve that moves relative to the shaft.
. This integrated design helps reduce gaps and leaks, and improve sealing performance.Material diversity: The materials of shaft sleeves have diversity, including plastic shaft sleeves (such as POM formaldehyde plastic shaft sleeves, PA nylon plastic shaft sleeves, PTFE polytetrafluoroethylene plastic shaft sleeves, etc.) and bimetallic shaft sleeves.
. These materials have good wear resistance, heat resistance, oil resistance, and chemical resistance, and can adapt to various conditions in vacuum environments.Self lubrication performance: In high temperature environments, the material of the shaft sleeve usually has self-lubricating performance.
. This helps to reduce wear and failure, and extend the service life of the shaft sleeve. At the same time, the self-lubricating performance also reduces the dependence on external lubricating oil, simplifying maintenance and upkeep work.Fixing and positioning function: The shaft sleeve plays a role in fixing the position in machinery, helping to maintain the stability and accuracy of the shaft.
. In some cases, shaft sleeves can also be used as sliding bearings. When the mechanical rotation is low and the clearance requirement is high, shaft sleeves can be used to replace rolling bearings for operation.