Why The application of double-row tapered thrust roller bearings in steel mills is very important?

Dec 18, 2024

The application of double-row tapered thrust roller bearings in steel mills is extremely important. They not only carry huge loads but also ensure the stable operation of the production line and the quality of rolled products. The following is a detailed analysis of the application of double-row tapered thrust roller bearings in steel mills.

1. Structural characteristics of double-row tapered thrust roller bearings

Double-row tapered thrust roller bearings are a special type of bearing with tapered raceways on the inner and outer rings and tapered rollers. This design allows the rollers to achieve pure rolling on the raceways, greatly improving the bearing's load capacity and service life. In addition, double-row tapered thrust roller bearings are separable bearings, and the inner components of the bearing (consisting of rollers, cages and inner rings) and the outer rings can be separated so that they can be easily installed on the journal and bearing seat.

2. Application scenarios of double-row tapered thrust roller bearings in steel mills

In steel mills, double-row tapered thrust roller bearings are mainly used in key parts of rolling mills, such as roll necks and roll-bearing boxes. Their main function is to withstand all axial forces generated during steel rolling to limit the bidirectional axial displacement of the shaft and prevent the relative displacement of the upper and lower rolls and the misalignment of the slots, thereby ensuring the morphological specifications of the rolled material.

3. Performance advantages of double-row tapered thrust roller bearings

Strong load-bearing capacity: Double-row tapered thrust roller bearings have extremely high load-bearing capacity and can withstand the huge axial and radial combined loads generated during steel rolling. This type of bearing has long rollers, large diameters, and a large number of rollers, so it has a high load capacity and can ensure the stable operation of the rolling mill.

Good rigidity: Due to the structural design of the double-row tapered thrust roller bearing, it has a large rigidity and is insensitive to impact loads. It allows the bearing to maintain a stable operating state when subjected to huge loads, thereby ensuring the quality of the rolled products.

Easy adjustment: The clearance of double-row tapered thrust roller bearings can be achieved by adjusting the position of the outer ring and the inner component in the axial direction. This adjustment method allows the bearing to be adjusted according to the actual working conditions during installation and used to meet different load and speed requirements.

Long service life: The logarithmic contact line design between the rollers and raceways of double-row tapered thrust roller bearings ensures the best stress distribution in the bearing, thereby extending the service life of the bearing. In addition, the rollers and cages of the bearings are specially designed to reduce the relative sliding of the rollers and raceways during operation, further improving the durability of the bearings.

4. Practical application cases of double-row tapered thrust roller bearings in steel mills

In the rolling mills of steel mills, double-row tapered thrust roller bearings are usually used together with multi-row cylindrical roller bearings. They jointly bear the huge loads generated during steel rolling, ensuring the stable operation of the rollers and the quality of the rolled products. For example, in the roll neck position of a rolling mill, double-row tapered thrust roller bearings can withstand slight eccentricity of the shaft relative to the bearing housing hole and slight changes in the radial internal clearance used by the radial bearing. This bearing configuration not only improves the operating stability of the rolling mill but also extends the service life of the bearing.

In addition, double-row tapered thrust roller bearings are also widely used in other equipment in steel mills, such as crane hooks, oil rig swivels, etc. These equipment also need to withstand huge axial and radial combined loads, and double-row tapered thrust roller bearings are the ideal choice to meet these requirements.

In summary, the application of double-row tapered thrust roller bearings in steel mills plays an irreplaceable role. They not only carry huge loads but also ensure the stable operation of the production line and the quality of rolled products. With the continuous development of science and technology, the performance of double-row tapered thrust roller bearings will be further improved, providing more reliable support for the production of steel mills.