How does the sealing technology of Deep Groove Ball Bearing ensure long-term stable operation?

In the machinery industry, deep groove ball bearings (Deep Groove Ball Bearing) have become the most widely used type of bearings because they can withstand radial loads and a certain amount of axial loads, and have a low friction coefficient and a high limit speed. However, in complex and changeable working conditions, how to ensure the long-term stable operation of deep groove ball bearings has become the focus of common concern for designers and users. Among them, sealing technology is a key link to ensure bearing performance, and its importance is self-evident. This article will explore in depth how the sealing technology of Deep Groove Ball Bearing ensures long-term stable operation.
1. The importance of sealing technology
The main purpose of the sealing technology of deep groove ball bearings is to prevent external dust, moisture, corrosive substances and other foreign matter from invading the interior of the bearing, while keeping the internal lubricant of the bearing clean and stable, so as to reduce friction and wear and extend the service life of the bearing. Good sealing performance can not only improve the reliability of the bearing, but also reduce maintenance costs and improve the overall operating efficiency of the equipment.
2. Design of sealing structure
Deep Groove Ball Bearing has various sealing structure designs, mainly including contact sealing and non-contact (low friction) sealing. Contact sealing forms an effective sealing barrier through close contact between the sealing ring and the bearing seat or shaft neck; non-contact sealing uses aerodynamic principles or special material properties to reduce friction between the seal and the contact surface, reduce energy consumption and wear.
In practical applications, bearings with double-sided sealing rings are popular because of their excellent sealing performance. These bearings are filled with an appropriate amount of grease before leaving the factory, usually 25% to 35% of the effective space in the bearing to ensure that the bearing has good lubrication conditions at the beginning of operation. At the same time, the material and structural design of the sealing ring need to consider factors such as the working environment temperature, medium properties and sealing requirements to ensure stable and reliable sealing performance.
3. Selection of sealing materials
The selection of sealing materials is crucial to ensure sealing performance. High-quality sealing materials should have good wear resistance, corrosion resistance, high temperature resistance and sealing performance. For example, some high-wear materials are used at the front end of the sealing lip to improve the durability of the seal. In addition, with the continuous progress of materials science, new polymer materials, composite materials, etc. are also widely used in the field of bearing sealing to meet the sealing needs under different working conditions.
4. Precautions for installation and maintenance
The effectiveness of sealing technology depends not only on the design and material selection, but also on the installation and maintenance process. During the installation process, the correct installation position of the seal ring should be ensured to avoid distortion or damage. At the same time, the use of oil heated above 80°C to install the bearing should be avoided to avoid damaging the bearing or causing grease deterioration and loss. During the maintenance process, the wear of the seal should be checked regularly, the damaged seal should be replaced in time, and the appropriate amount of lubricant should be added to keep the bearing in good operating condition.