What are the characteristics of the sealing method of deep groove ball bearing 69 series

In modern mechanical design, the choice of sealing technology is crucial to the performance and life of bearings.

Contact sealing method
Contact sealing, also known as dust cover sealing, is a common sealing solution in Deep Groove Ball Bearing 69 series. This sealing method effectively blocks the intrusion of external pollutants such as dust and moisture through physical contact between the sealing ring and the inner groove of the bearing, thereby improving the cleanliness and service life of the bearing.
Dust cover seal
The dust cover seal is usually made of metal or plastic material, with a circular or arc shape, and fits tightly on the inner or outer ring of the bearing. Bao li Bearing's dust cover seal products are specially processed to show excellent wear resistance and corrosion resistance, ensuring that they can maintain long-term and stable sealing effects in harsh working environments. This sealing method has a simple structure, easy installation, and relatively low cost, so it is widely used in many fields such as automobiles, motors and household appliances.
Skeleton seal
Skeleton seal is another important form of contact seal. Its structure is relatively complex, but the sealing effect is significant. Bao li Bearing's skeleton seal products use oil-resistant rubber as the base material and embed metal lining rings inside to enhance the overall strength and wear resistance. This sealing method is particularly suitable for applications with high shaft neck circumferential speed, such as centrifugal pump bearing boxes. The skeleton seal not only effectively prevents lubricant leakage, but also significantly reduces friction and wear inside the bearing, thereby extending its service life.

Non-contact sealing method
Unlike contact sealing, non-contact sealing uses the principle of fluid dynamics to achieve sealing by maintaining an appropriate gap between the seal and the bearing parts. This sealing method generates almost no friction heat during the rotation of the bearing, and the seal is free of wear, so it is particularly suitable for high-speed, high-temperature and high-precision working environments.
Gap sealing
Gap sealing is to leave a small annular gap between the shaft and the through hole of the bearing cover, and to achieve sealing by controlling the size of the gap. Bao li Bearing's gap sealing products use precision machining technology to ensure the uniformity and stability of the gap. In order to further improve the sealing effect, multiple parallel annular grooves can be opened in the bearing cover hole in the design and filled with grease. This sealing method is particularly suitable for lubricating oil sealing, which can effectively prevent lubricating oil leakage and reduce friction and wear inside the bearing.
Oil slinger seal
The oil slinger seal uses the centrifugal force of the oil slinger on the shaft to sling the oil leaking along the shaft gap back to the inside of the bearing or the oil pool to achieve sealing. Bao li Bearing's oil slinger seal products are reasonably designed and well-made, and can maintain a stable sealing effect under the condition of high circumferential speed of the shaft neck. This sealing method is particularly suitable for oil-lubricated applications, such as heavy machinery and wind power equipment.
Labyrinth seal
The labyrinth seal is a complex non-contact sealing method that forms a "maze" effect by forming a tortuous small gap between the stationary and rotating parts to prevent lubricant leakage. Bao li Bearing's labyrinth seal products use advanced processing technology and high-performance materials to ensure the uniformity and stability of the gap. This sealing method has a good sealing effect for both lubricating oil and grease, and is suitable for a variety of industrial applications.