Bearing seal is one of the key technologies to ensure the normal operation of bearings and extend their service life. The main purpose of the bearing seal is to prevent the leakage of external pollutants and lubricants, while preventing the loss of lubricants inside the bearing. This paper will give an overview of the bearing sealing technology, introduce its basic principle, common types and application scenarios.
First, the basic principle of bearing seal
The basic principle of bearing sealing is to prevent the mutual penetration of pollutants and lubricants by establishing a barrier between the bearing and the external environment. This usually involves installing a sealing device, such as a seal ring, gasket or seal cap, on the end face or side of the bearing.
Second, the common types of bearing seals
1. Contact seal: The contact seal is sealed by direct contact between the seal and the bearing end face or side. Common contact seals include felt seals, lip seals and rubber seals.
2. Non-contact seal: The non-contact seal is sealed by gap or labyrinth effect, and there is no direct contact between the seal and the bearing. Common non-contact seals include labyrinth seals and clearance seals.
3. Combined seal: Combined seal is the combination of contact seal and non-contact seal to improve the sealing effect. For example, a rubber seal or felt seal can be added to the labyrinth seal.
3. Application scenario of bearing seal
Bearing seals have a wide range of application scenarios, covering various industrial fields. For example, in the petrochemical, electric power, steel, machinery manufacturing and other industries, bearing seals are widely used in pumps, compressors, wind turbines, transmission devices and other equipment.
Fourth, the development trend of bearing seals
With the continuous progress of industrial technology, bearing sealing technology is also constantly developing. Future bearing sealing technology will pay more attention to sealing performance, reliability and environmental protection. At the same time, the application of new materials and new processes will also promote the innovation and development of bearing sealing technology.
V. Summary
Bearing sealing technology is one of the key technologies to ensure the normal operation of bearings and extend their service life. By understanding the basic principle, common types and application scenarios of bearing seals, we can better select and apply the appropriate bearing seal technology to provide a strong guarantee for the stable operation of industrial equipment. With the continuous progress of science and technology, it is believed that the future bearing seal technology will be more advanced and reliable