Classification and introduction of steel rolling mill work roll bearings

Dec 06, 2023

Work roll bearings are an essential part of the rolling mill. They bear substantial rolling force and friction during the rolling process, so they need high strength, high wear resistance and good stability. Several joint work roll bearings and their characteristics will be introduced below.

Cylindrical Roller Bearings

Cylindrical roller bearings are a relatively common work roll bearing. Its cylindrical rolling elements have a high load-bearing capacity and low friction coefficient. The inner and outer rings of this kind of bearing have ribs according to different designs, which can prevent the rolling elements from falling off during operation and also improve the bearing capacity. Cylindrical roller bearings are suitable for high speed, light load and precision rolling processing.

The picture above is FV's customized four-row cylindrical roller bearing 313445C C4 brass cage.

Spherical roller bearing

The spherical roller bearing is a work roll bearing with an automatic self-aligning function. Its rolling elements are spherical or drum-shaped and can automatically adjust the distance between the inner and outer rings to adapt to rolling rolls of different diameters. This bearing is suitable for heavy-load, low-speed, precision rolling processing and has good impact resistance and high load-bearing capacity.

Thrust spherical roller bearing

The thrust spherical roller bearing is a work roll bearing that combines the characteristics of a thrust bearing and a spherical roller bearing. Its rolling elements are spherical or drum-shaped, which can automatically adjust the distance between the inner and outer rings and bear the shaft's bearing load. This bearing is suitable for heavy-load, low-speed, precision, and two-way rolling processing and has high load-bearing capacity and impact resistance.

Tapered Roller Bearings

The tapered roller bearing is a work roll bearing with a high load-bearing capacity and low friction coefficient. Its rolling elements are conical and can bear large radial and axial loads. This bearing is suitable for heavy-load, medium-speed, precision rolling processing and has good impact resistance and high load-bearing capacity.

Four-row tapered roller bearings.

The four-row tapered roller bearing is a work roll bearing with higher load-bearing capacity and better stability. Its rolling elements are conical in four rows and can withstand greater radial and axial loads. This bearing is suitable for heavy-load, low-speed, precision rolling processing, with higher load-bearing capacity and better stability.

The picture above is a four-row tapered roller bearing produced by FV for work rolls.

Rolling guide bearings

Rolling guide bearing is a work roll bearing with high precision and stability. Its rolling elements are short cylindrical and can withstand large radial and axial loads. This bearing is suitable for high-precision, high-speed, light-load rolling processing and has high load-bearing capacity, low friction coefficient and good stability.

Spherical bearing

The spherical plain bearing is a work roll bearing suitable for unique working environments. It has a simple structure, small size, easy maintenance, and can adapt to large axial and radial displacements. This bearing is suitable for rolling processing with heavy load, low speed, and sizeable axial displacement, and it has good load-bearing capacity and adaptability.

The above are several joint work roll bearings and their characteristics. Different bearings have different application ranges and characteristics. Choosing the appropriate bearing can effectively improve the performance and production efficiency of the rolling mill. In actual use, selection and configuration must also be made according to the specific working environment and rolling requirements. At the same time, it is also necessary to strengthen the maintenance of bearings. Regular inspection and replacement of lubricants, cleaning and overhauling of internal parts of bearings and other measures can effectively extend the service life of bearings and ensure the stable operation of equipment.