The special properties of tapered roller bearings are used in rolling mills.

May 29, 2024

The application of tapered roller bearings in rolling mills is a typical example of their special properties being fully demonstrated in industrial production. As important equipment for the processing of modern steel, non-ferrous metals, and other metal materials, rolling mills have a crucial impact on production efficiency and product quality. With its unique structural design and excellent performance, tapered roller bearings play an irreplaceable function in rolling mill applications.

Special properties of tapered roller bearings

The tapered roller bearing is a bearing that can withstand combined radial and axial loads. Its structural characteristics are mainly reflected in the following aspects:

1. Tapered roller design: The rollers of tapered roller bearings are designed in a truncated cone shape and form line contact with the tapered raceways of the inner and outer rings. This contact method enables the bearings to withstand large radial and axial loads, and at the same time, The friction between the rollers and raceways is reduced, and the durability of the bearings is improved.

2. Large contact angle and long contact line: The contact angle of the tapered roller bearing is large, and the contact line is long, which makes the stress distribution of the bearing more even when it bears the load, thus improving the bearing capacity and fatigue life of the bearing.

3. Excellent lubrication performance: The tapered roller bearing adopts the design of the large end surface and large rib of the roller in which the spherical surface and the conical surface contact, which improves the lubrication conditions, reduces the friction coefficient of the bearing, reduces the wear and heat of the bearing, and improves the efficiency of the bearing. Bearing service life.

4. Easy to install and maintain: The inner and outer rings of the tapered roller bearing can be installed separately, making the installation and disassembly of the bearing more convenient. At the same time, bearing maintenance is relatively simple, requiring only regular inspections and replacement of lubricating grease and other routine operations.

Application of tapered roller bearings in rolling mills

1. Improve the operating stability of the rolling mill

Tapered roller bearings can hold large radial and axial loads, which enables the rolling mill to maintain stable operation when bearing complex loads. During the rolling process, the rolling mill needs to withstand radial pressure and axial thrust from the rolling stock and rolls, and tapered roller bearings can effectively balance these forces and ensure the stable operation of the rolling mill. In addition, the high rigidity, impact, and vibration resistance of tapered roller bearings also enable the rolling mill to quickly return to a stable state when subjected to external impact and vibration, ensuring the continuity of the rolling process.

2. Improve the bearing capacity of the rolling mill

The load-bearing capacity of tapered roller bearings is much higher than that of other types of bearings, which allows the rolling mill to withstand greater rolling forces and improve rolling efficiency. During the rolling process, the rolling mill needs to overcome the friction between the rolled piece and the roll. Also, it needs to withstand the resistance generated during the deformation process of the rolled piece. The ability of tapered roller bearings to withstand these forces allows the mill to roll at higher speeds and with greater reductions, thereby increasing rolling efficiency.

The picture above is the four-row tapered roller bearing NP695713 designed and manufactured by FV, which is used for hot rolling.

Please download the tapered roller bearing catalog from the FV website or consult an FV sales engineer.

3. Improve rolling mill precision and product quality

The accuracy and stability of tapered roller bearings have an important impact on the accuracy and product quality of rolling mills. Because the tapered roller bearing can withstand large loads and maintain stable operation, it can ensure that the rolling mill maintains constant rolling force and speed during the rolling process, thereby improving the dimensional accuracy and surface quality of the rolled parts. In addition, the tapered roller bearing has good lubrication performance, which can reduce bearing wear and heat generation, lower the operating temperature of the rolling mill, and further improve the quality and performance of the rolled products.

4. Reduce rolling mill maintenance costs and failure rates

The easy installation, easy maintenance, and flexibility of tapered roller bearings greatly reduce the maintenance costs and failure rate of rolling mills. During the installation and maintenance of the rolling mill, the tapered roller bearings can be easily installed and removed, reducing downtime and maintenance costs. At the same time, the maintenance of tapered roller bearings is relatively simple, requiring only regular operations such as regular inspections and replacement of lubricating grease, reducing maintenance costs and failure rates. In addition, the flexibility of the tapered roller bearing allows it to adapt to rolling mills of different specifications and models, improving the versatility and flexibility of the rolling mill.

In summary, the application of tapered roller bearings in rolling mills is mainly reflected in improving the operating stability, load-bearing capacity, accuracy, and product quality of the rolling mill, as well as reducing maintenance costs and failure rates. With the continuous development and upgrading of rolling mill technology, the application of tapered roller bearings will become more extensive and in-depth.