Installation of spherical thrust roller bearings on rolling mills

Mar 26, 2024

The rolling mill is an important piece of equipment in steel production. Its stability and accuracy have a crucial impact on product quality and production efficiency. As a key component in the rolling mill, the spherical thrust roller bearing can automatically adjust the axis center position to ensure good contact between the bearing and the journal, thereby effectively transmitting and withstanding the huge load during the rolling process. Therefore, the correct installation of spherical thrust bearings is crucial to the normal operation of the rolling mill.

1. Preparations before installation

Before installing the spherical thrust roller bearing, a series of preparatory work is required to ensure a smooth installation process. First of all, the relevant parts of the rolling mill need to be cleaned to ensure that they are free of dust, oil, and other impurities to prevent these impurities from entering the bearing during the installation process and affecting the performance of the bearing. Secondly, it is necessary to check whether the model, specification and quantity of the bearings are consistent with the requirements of the rolling mill to ensure the suitability of the bearings. In addition, the tools and equipment required for installation, such as lifting equipment, measuring tools, lubricants, etc., need to be prepared for use during the installation process.

2. Installation steps

Lifting and positioning

When installing the spherical thrust roller bearing, you first need to use lifting equipment to smoothly lift the bearing to the installation position of the rolling mill. During the lifting process, attention should be paid to maintaining the balance and stability of the bearings to avoid collisions or falls. After the hoisting is in place, it needs to be accurately positioned according to the structural characteristics of the rolling mill and the installation requirements of the bearings. During the positioning process, measuring tools should be used to accurately measure the position and height of the bearing to ensure that the coaxiality and parallelism between the bearing and journal meet the requirements.

Install bearing seat

The bearing seat is an important component supporting the spherical thrust roller bearing, and its installation quality directly affects the stability and accuracy of the bearing. When installing the bearing seat, first check whether its surface is flat and free of damage, and then place it in the predetermined position. Then, use bolts to tightly connect the bearing seat to the body of the rolling mill. During the tightening process, attention should be paid to the tightening torque and sequence of the bolts to ensure that the bearing seat is stable and evenly stressed.

Install bearings

After the installation of the bearing seat is completed, the spherical thrust roller bearing can be installed. First, an appropriate amount of lubricant needs to be added to the inner ring of the bearing to reduce friction and wear. Then, place the bearing smoothly on the bearing seat, ensuring that the contact surface between the bearing and the journal is even and gap-free. During the installation process, care should be taken to avoid excessive impact and vibration on the bearing to avoid damaging the structure and performance of the bearing.

Adjustment and Inspection

After installation is completed, the spherical thrust roller bearing needs to be adjusted and inspected. First, the bearing tightening should be checked to ensure that all bolts are tightened in place. Then, measuring tools are used to check the bearing's clearance, coaxiality, and parallelism to ensure that each parameter meets the requirements. In addition, the lubrication of the bearings needs to be checked to ensure that the lubricant is sufficient and there is no leakage.

3. Installation precautions

Strictly comply with installation regulations.

Relevant installation specifications and operating requirements should be strictly followed when installing spherical thrust roller bearings. Do not arbitrarily change the installation steps or omit necessary inspection links to ensure the installation quality and bearing performance.

Pay attention to safety matters.

During the installation process, you should pay attention to safety matters, such as wearing protective equipment and avoiding injuries from heavy objects. At the same time, during the hoisting and installation process, the site should be kept clean and orderly to avoid accidents.

Ensure the matching accuracy of the bearing and journal

The matching accuracy between the spherical thrust roller bearing and the journal has an important impact on the performance and life of the bearing. Therefore, during the installation process, it is necessary to ensure that the mating surface between the bearing and journal is clean and free of damage and that the mating accuracy meets the requirements.

Pay attention to bearing lubrication.

Good lubrication is essential for the proper operation of spherical thrust roller bearings. During the installation process, ensure that an appropriate amount of lubricant is applied inside the bearing, check the lubrication condition regularly during use, and replenish or replace the lubricant in a timely manner.

The installation of spherical thrust roller bearings on rolling mills is a complex and delicate task, which needs to be worked in strict accordance with installation specifications and operating requirements. Through correct installation and debugging, the spherical thrust bearing can be ensured to exert its maximum performance in the rolling mill, improving rolling efficiency and product quality. At the same time, regular maintenance and upkeep are also key measures to ensure long-term stable operation of bearings. Therefore, in actual operation, the training and management of installation personnel should be strengthened to improve the installation quality and technical level to provide a strong guarantee for the normal operation of the rolling mill.

With the continuous advancement of steel rolling technology and the expansion of application fields, the performance and installation requirements of spherical thrust roller bearings will also continue to increase. Therefore, we need to continuously research and explore new installation technologies and methods to adapt to the development needs of steel rolling mills. At the same time, exchanges and cooperation with other fields will be strengthened to jointly promote the development and innovation of steel rolling technology and bearing technology.