Introduction to the application of split spherical plain bearings in rolling mills.

Aug 14, 2024

In heavy machinery such as rolling mills, the selection and installation of bearings have a vital impact on the overall performance and service life of the equipment. With the advancement of technology and the improvement of process requirements, split spherical plain bearings have been widely used in the field of rolling mills due to their unique structural advantages and adaptability. This article will introduce the characteristics of split spherical plain bearings, specific applications in rolling mills, advantage analysis, installation, and maintenance.

1. Characteristics of split spherical plain bearings

Split spherical plain bearings, as the name suggests, are a type of bearing that can be split into two or more parts, and its design allows installation, replacement or maintenance without disassembling adjacent parts. This type of bearing usually has the following characteristics:

Easy to install and maintain: The split design makes the installation and removal of bearings easier, reducing downtime and maintenance costs. This feature is particularly important in heavy equipment such as rolling mills because frequent removal and installation often mean high maintenance costs and long downtime.

Strong adaptability: Split spherical plain bearings can adapt to various complex installation environments and space restrictions, especially in difficult-to-reach or narrow spaces such as rolling mill drive shafts, where their advantages are more obvious.

Strong load-bearing capacity: Split spherical plain bearings are usually made of high-strength materials and are precision-machined to ensure that they have good load-bearing capacity and wear resistance. It enables them to operate stably in high-load, high-impact environments such as rolling mills.

Good sealing: Split spherical plain bearings focus on sealing performance during design and manufacturing to prevent lubricant leakage and impurity intrusion. It helps to maintain the good lubrication state of the bearing and extend its service life.

2. Specific application of split spherical plain bearings in rolling mills

In rolling mills, split spherical plain bearings are mainly used in the following aspects:

Drive shaft support: The drive shaft of the rolling mill is a key component for transmitting power and torque, and its stability and reliability directly affect the overall performance of the rolling mill. Split spherical plain bearings are often used to support the drive shaft because of their strong load-bearing capacity and easy installation and maintenance. Especially in large four-roll rolling mills, the weight of the universal transmission shaft is large and split single-row or double-row cylindrical roller bearings are required to bear it to ensure the stable operation of the joint and coupling.

Roller adjustment: The height and position of the rollers need to be continuously adjusted during the operation of the rolling mill to adapt to different rolling requirements. The flexibility of the split spherical plain bearing makes this adjustment process easier and more efficient. By adjusting the position and angle of the bearing, precise control of the roll can be achieved, improving rolling accuracy and product quality.

Bearing complex loads: The rolling mill will be subjected to complex loads from all directions during operation, including radial loads, axial loads, and overturning moments. The split spherical plain bearing has good load-bearing capacity and adaptability. It can withstand the effects of multiple loads at the same time to ensure the stable operation of the rolling mill.

3. Analysis of the advantages of split spherical plain bearings on rolling mills

Improve production efficiency: The convenient installation and maintenance characteristics of the split spherical plain bearings reduce the downtime of the rolling mill and improve the production efficiency of the equipment. It is particularly important in the fast-paced modern industrial production.

Reduce maintenance costs: Since the split spherical plain bearings are easy to disassemble and replace, the maintenance cost can be greatly reduced. At the same time, its good sealing and wear resistance also help to extend the service life of the bearings and further reduce maintenance costs.

Improve rolling accuracy: The precise installation and stable operation of the split spherical plain bearings help to improve the rolling accuracy and product quality of the rolling mill. Especially in the field of high-precision rolling, such as wire mills, plate mills, etc., the application of split spherical bearings is particularly important.

Enhance equipment reliability: Split spherical bearings have strong load-bearing capacity and wide adaptability and can maintain stable operation under various harsh working conditions. It helps to enhance the overall reliability and stability of the rolling mill and reduce the failure rate.

4. Installation and maintenance of split spherical bearings

Preparation before installation: Before installing the split spherical bearings, it is necessary to carefully check the integrity and cleanliness of the bearings and their related components. Ensure that the inner and outer surfaces of the bearings are free of damage and impurities, and apply an appropriate amount of lubricant to reduce friction and wear.

Precise installation: During the installation process, it is necessary to follow the drawings and technical requirements strictly. Ensure that the parameters such as the installation position, angle, and tightening torque of the bearing meet the specified requirements. At the same time, pay attention to avoid excessive impact and vibration on the bearing.

Regular maintenance: Split spherical bearings need to be maintained and inspected regularly during use, including checking the lubrication status, wear condition, sealing performance, and other aspects of the bearings. If problems are found, deal with them in time and replace damaged parts to ensure the normal operation of the bearings.

Professional training: In order to improve the skill level and maintenance ability of operators, relevant professional training and exchange activities can be organized. Through learning and practice, we can master the installation, commissioning, and maintenance skills of split spherical plain bearings, as well as fault diagnosis and treatment methods.

The application of split spherical plain bearings in rolling mills reflects its unique advantages and value. By rationally selecting and installing split spherical plain bearings, the production efficiency of rolling mills can be significantly improved, maintenance costs can be reduced, rolling accuracy and product quality can be improved, and the reliability and stability of equipment can be enhanced. Therefore, in the future design and manufacturing process of rolling mills, we should continue to pay attention to and promote the application and development trend of split spherical plain bearings.