The principle of using cylindrical roller bearings and thrust bearings in rolling mills

Apr 18, 2024

The combined use of cylindrical roller bearings and thrust bearings in rolling mills is an important technology in the working process of rolling mills. This combination optimizes the operating efficiency of the rolling mill stands and improves the quality of the rolled products. Below, we will elaborate on the principle of using these two types of bearings in rolling mills.

First, we need to understand the basic functions and characteristics of cylindrical roller bearings and thrust bearings. Cylindrical roller bearings are mainly used to withstand radial forces, that is, forces perpendicular to the bearing axis. Its structural feature is that the rolling elements are cylindrical and can roll between the inner and outer rings of the bearing to reduce friction and energy consumption. Thrust bearings are mainly used to bear axial force, that is, force along the bearing axis. Its structural feature is to disperse the axial force to various parts of the bearing through components such as thrust washers and thrust rings to maintain stable operation of the equipment.

In rolling mills, the combination of cylindrical roller bearings and thrust bearings is mainly used to meet the complex mechanical requirements during the working process. When the rolling mill is working, the roll system needs to withstand huge radial and axial forces while maintaining high-precision operation. At this time, the matching of cylindrical roller bearings and thrust bearings is particularly important.

Cylindrical roller bearings bear radial force, which can ensure that the roller remains stable during rotation and avoids vibration or deflection due to the influence of radial force. At the same time, its rolling element design can reduce friction, reduce energy consumption, and improve the operating efficiency of the rolling mill.

The thrust bearing bears the axial force to ensure that the roller remains stable in the axial direction. Its thrust gaskets, thrust rings, and other components can evenly distribute the axial force to all parts of the bearing to prevent bearing damage caused by excessive local stress. At the same time, the high-precision design of the thrust bearing can also ensure the precise positioning of the roll in the axial direction and improve the accuracy and quality of rolled products.

When using cylindrical roller bearings and thrust bearings in rolling mills, lubrication and cooling issues also need to be considered. During the rolling mill's operation, the bearings generate heat due to friction. If the heat cannot be dissipated in time, the bearings' temperature will rise, and their service life will be affected. Therefore, oil-gas lubrication or oil mist lubrication is usually used in rolling mills to lubricate and cool bearings to ensure their normal operation.

Above is the 61860 M produced by FV bearing for rolling mill.

In addition, the combination of cylindrical roller bearings and thrust bearings also requires consideration of bearing installation and maintenance issues. During installation, it is necessary to ensure that the bearing's accuracy and fitting clearance meet the design requirements to avoid bearing damage caused by improper installation. During maintenance, bearings need to be inspected and replaced regularly to detect and deal with bearing problems in time to ensure the rolling mill's stable operation.

To sum up, the combined use of cylindrical roller bearings and thrust bearings in rolling mills is a key technology in the working process of rolling mills. This combination can not only meet the complex mechanical requirements during the working process of the rolling mill, but also improve the operating efficiency of the rolling mill stands and the quality of rolled products. At the same time, it is also necessary to pay attention to the lubrication, cooling, installation, and maintenance of bearings to ensure the normal operation of the bearings and the stable production of the rolling mill.

In future development, with the continuous advancement of rolling mill technology and the increasing demand for rolled products, the combination of cylindrical roller bearings and thrust bearings will be more precise and efficient. We look forward to seeing more innovative bearing technologies and application solutions in the near future, injecting new impetus into the development of the rolling mill industry.

The above is a detailed explanation of the principle of using cylindrical roller bearings and thrust bearings in rolling mills. By deeply understanding and mastering these principles, we can better apply these technologies, improve the operating efficiency and product quality of rolling mills, and make greater contributions to the development of the rolling industry.