Classification and application introduction of bar rolling mill bearings

Dec 01, 2023

The Bar rolling mill is a metallurgical equipment used to produce bars of various specifications. Different types of bearings are needed in various parts of the rolling mill to ensure the equipment's regular operation and the production process's smooth progress. The following are some bearings used in bar rolling mills and their locations:

Cylindrical roller bearings: These are typically used to support the rolls' upper and lower roller shafts. Their primary function is to withstand radial loads while providing sufficient rigidity to ensure precise guidance of the rolls. The design features of cylindrical roller bearings enable them to withstand high loads while maintaining high-speed rotation.

Spherical roller bearings: Spherical roller bearings are widely used in rolling mills. They have a self-aligning function that can accommodate slight changes in the roll axis. This bearing usually supports the lower roller shaft, providing a more extensive support area and higher rigidity. The high precision and stability of spherical roller bearings make them ideal for high-precision rolling applications.

The picture above is the spherical roller bearing 24144MB/W33 C2 manufactured by FV for steel mill customers.

Needle Roller Bearing: A needle roller bearing is a bearing without an inner ring commonly used in rolling mills' support rolls. Their primary function is to withstand radial loads while providing high precision and high-speed rotation. The design of needle roller bearings enables them to adapt to high load, high speed and high precision rolling requirements.

Tapered roller bearings: Tapered roller bearings are commonly used to support rolling mills' upper and lower rollers. Their design features enable them to withstand radial and axial loads while providing high rigidity and precision. The use of tapered roller bearings ensures precise guidance and stable operation of the rolls.

The picture above is the double-row tapered roller bearing 313128 designed and manufactured by FV.

Thrust ball bearings: Thrust ball bearings are mainly used in occasions that bear large axial loads, such as in auxiliary equipment such as leveling and tension leveling machines. Their design features allow them to withstand large axial loads while maintaining high precision and stability. Thrust ball bearings are usually used in the transmission system of rolling mills to provide stable power transmission for the operation of the rolling mill.

In addition to the above main bearing types, other bearings are often used in bar rolling mills, such as angular contact ball bearings, deep groove ball bearings, etc. These bearings play different roles in various parts of the rolling mill, but the common goal is to ensure the equipment's regular operation and the production process's smooth progress.

In short, during the operation of the bar rolling mill, various types of bearings play critical roles in different parts. From cylindrical and tapered roller bearings that support and guide the rolls to spherical roller bearings and thrust ball bearings that provide high precision and stability, these bearings provide essential support for bar production. Assure. At the same time, reasonable maintenance and upkeep are crucial to ensure these bearings' normal operation and service life. Regular inspection, lubrication, seal replacement, cleaning and other maintenance measures can effectively extend the bearings' service life and ensure the equipment's regular operation.

To better play the role of bearings in bar rolling mills, operators must fully understand the characteristics and usage requirements of various bearings and formulate reasonable maintenance plans based on actual production conditions. At the same time, manufacturers also need to continuously improve and optimize the design of bearings and improve key indicators such as load-bearing capacity, high-speed performance, and high-temperature resistance to meet the evolving process requirements of bar rolling mills. Only in this way can we give full play to the role of bearings in bar rolling mills, improve the production efficiency of equipment and, reduce production costs, and contribute to the sustainable development of enterprises.