Taper sleeves and bushings and oil film-bearing performance

Mar 08, 2024

As the core component of modern rolling mill equipment, the performance of oil film bearings directly determines the rolling mill's operating efficiency and rolling quality, as important components of oil film bearings, tapered sleeves, and bushings have a vital impact on the bearing performance. This article will explore in detail the relationship between taper sleeves and bushings and the performance of oil film bearings and how to improve the overall performance by optimizing the design of taper sleeves and bushings.

1. Performance of tapered sleeves and oil-film bearings

The tapered sleeve is one of the key components of the oil film bearing. Its shape and structural characteristics directly determine the bearing capacity and stability. First, the taper design of the taper sleeve has an important impact on the load-bearing performance of the bearing. The proper taper can form a stable oil film during the rolling process, effectively supporting the weight and working load of the roll. Too small a taper may lead to unstable oil film formation, while too large a taper may increase bearing friction and wear.

Secondly, the material and processing accuracy of the tapered sleeve also has an important impact on the performance of the oil film bearing. High-quality materials can ensure that the taper sleeve has high strength and wear resistance, thus extending the bearing's service life. High-precision machining can ensure that the matching gap between the taper sleeve and the bushing is uniform, helping to form a uniform oil film thickness and pressure distribution, further improving the bearing capacity and stability.

In addition, the deformation of the tapered sleeve during assembly and use will also affect the performance of the oil film bearing. If the taper sleeve is subjected to excessive pressure or temperature changes during assembly, it may deform, thereby affecting the formation and distribution of the oil film. Therefore, during the design and manufacturing process of the tapered sleeve, its deformation characteristics must be fully considered, and effective measures must be taken to reduce the impact of deformation on bearing performance.

The picture above is an oil film-bearing tapered sleeve customized by FV Company for a large steel mill in Poland.

2. Performance of bushings and oil film bearings

The bushing is another important component of the oil film bearing. It works with the tapered sleeve to form a stable oil film support structure. Factors such as bushing material, size, and machining accuracy will affect the performance of oil film bearings.

First, the bushing material must resist wear and corrosion to cope with the friction and corrosion during the rolling process. High-quality materials can ensure the bushing maintains stable performance during long-term use and reduce performance degradation caused by wear and corrosion.

Secondly, the bushing must be sized to match the taper bushing to ensure an even gap between the two. Appropriate gap size helps form a stable oil film and improves the bearing capacity and stability. If the gap is too large or too small, it may cause the oil film to form unstable and affect the bearing's performance.

In addition, the machining accuracy of the bushing is also a core factor affecting the performance of oil film bearings. High-precision machining can ensure the smoothness and flatness of the bushing surface and reduce friction and wear caused by excessive surface roughness. At the same time, high-precision machining can also ensure the matching accuracy between the bushing and the tapered sleeve, further improving the stability and reliability of the bearing.

Above is the oil film bearing bushing 34.023.01/475.05 made by FV.

3. The comprehensive impact of tapered sleeves and bushings on the performance of oil film bearings

The core components of oil film bearings, taper sleeves, and bushings have a decisive impact on the bearing's performance. During the design and manufacturing process, factors such as the material, size, and processing accuracy of the taper sleeve and bushing must be comprehensively considered to ensure they can form a stable oil film support structure and provide excellent load-bearing capacity and stability.

At the same time, the design of the taper sleeve and bushing also need to consider the actual working environment and working requirements of the rolling mill. For example, rolling mills operating under severe conditions such as high temperature, high humidity, or heavy load must choose taper sleeve and bushing materials with higher high temperature, corrosion, and wear resistance to ensure long-term stable operation of the bearings.

In addition, with the stable development of science and technology, new materials and processing technologies have also provided more possibilities for the design and manufacturing of taper sleeves and bushings. For example, the use of advanced ceramic materials or coating technology can further improve the wear resistance and corrosion resistance of taper sleeves and bushings; the use of high-precision processing technologies such as CNC machining or laser processing can ensure the dimensional accuracy and quality of taper sleeves and bushings. Surface quality further improves the performance and reliability of oil film bearings.

4. Conclusion

To sum up, the performance of tapered sleeves and bushings is closely related to oil film bearings. By optimizing factors such as the design, material, and processing accuracy of taper sleeves and bushings, the load-bearing capacity, stability, and reliability of oil film bearings can be significantly improved, providing a stable guarantee for the efficient and stable operation of the rolling mill. In the future, with the fast development of science and technology and the quick expansion of application fields, the design and manufacturing technology of taper sleeves and bushings will continue to be innovated and improved, providing more possibilities for performance improvement and popularization of oil film bearings.