What are the key points to pay attention to when selecting bearings during the rough rolling stage?

Mar 28, 2024

In the rough rolling stage, the selection of rolling mill bearings is a key factor in ensuring the smooth progress of the rolling process, improving production efficiency, and ensuring product quality. Choosing the right bearing can not only reduce the equipment failure rate and extend the service life of the bearing but also effectively reduce the cost of repair and replacement of bearings. Therefore, when selecting bearings during the rough rolling stage, you need to pay attention to the following points:

First, the rough rolling stage's working characteristics include withstanding high load, high impact, and high temperature. Therefore, bearings must have a high load-bearing capacity, good impact resistance, and high-temperature resistance. When selecting bearings, factors such as the rolling force and rolling speed of the rolling mill, as well as the hardness and thickness of the rolled material, need to be taken into consideration to ensure that the bearings can withstand these harsh working conditions.

Secondly, the accuracy and stability of the rolling mill bearing are also aspects that need to be focused on during the selection process. During the rough rolling process, the unevenness of the rolled material and the fluctuation of the rolling force may cause the bearing to be subjected to uneven loads. Therefore, the bearing needs to have high precision and stability to ensure the stability of the rolling process and product quality. When selecting bearings, factors such as the manufacturing accuracy, heat treatment process, and installation accuracy of the bearing need to be considered to ensure that the bearing can maintain stable performance during use.

In addition, the material selection of the bearing is also crucial. The rough rolling stage has higher requirements for bearing materials, and materials with high strength, high hardness, good wear resistance, and fatigue resistance need to be selected. Common bearing materials include high carbon chromium bearing steel, carburized steel, alloy steel, etc. These materials can meet the requirements for bearing performance in the rough rolling stage. When selecting bearing materials, factors such as material cost, processing performance, and reliability also need to be considered to select the most suitable material.

At the same time, bearing lubrication and cooling are also factors that need to be considered during the selection process. The operating temperature in the rough rolling stage is high, and the bearings are easily damaged by frictional heat. Hence, the lubrication and cooling system are crucial to the performance and service life of the bearings. When selecting bearings, it is necessary to consider the lubrication and cooling methods of the bearings to make sure that the bearings are fully lubricated and cooled during operation, reduce friction and heat, and extend the service life of the bearings.

Finally, bearing maintenance and replacement are also issues that need to be considered during the selection process. Bearings in the rough rolling stage are prone to wear and damage and, therefore, require regular inspection and maintenance when selecting bearings. Factors such as the maintenance cycle, replacement cycle, and replacement cost need to be taken into consideration to ensure that the bearings can be maintained and replaced in a timely and effective manner during use and to ensure the continuous and stable operation of the rolling mill.

To sum up, when selecting bearings in the rough rolling stage, you need to pay attention to the bearing capacity, accuracy and stability, material selection, lubrication and cooling, and maintenance and replacement. By comprehensively considering these factors and selecting bearings suitable for the working characteristics of the rough rolling stage, we can ensure the smooth progress of the rolling process, improve production efficiency, reduce maintenance costs, and create greater economic benefits for the enterprise. At the same time, it is also necessary to fully communicate with the rolling mill manufacturer or bearing supplier to understand the specific performance and scope of application of the bearing in order to make a more informed choice.