Selection and Usage of Rolling Mill Bearings-NEWS-www.fv-bearing.com
Loading...

Selection and Usage of Rolling Mill Bearings

Jun 15, 2022

The roll bearing of the rolling mill is very important and is the core component for the normal operation and normal rotation of the roll. The working environment of rolling mill bearings requires it to have large bearing capacity, strong impact resistance, and unstable working temperature, so it is necessary to choose suitable bearings to reduce the downtime of rolling mill failures. However, some customers still do not know how to choose suitable bearings. Today, Luoyang FV will explain how to choose suitable bearings for rolling mills.


Selection of rolling mill bearings

Four-row cylindrical roller bearings: Under the same external dimensions, multi-row cylindrical roller bearings can withstand larger loads than double-row cylindrical roller bearings, and can adapt to higher working speeds. However, it cannot bear the axial load, so when choosing four-row cylindrical roller bearings, needle roller bearings, etc., it is necessary to match the thrust bearing to bear the axial load, so that the multi-row cylindrical roller bearing can bear the radial load.

The roller of the four-row tapered roller bearing has an included angle with the horizontal during installation, so it can bear both radial load and axial load.

The double row radial spherical roller bearing also has a certain angle with the horizontal during installation, which can bear both radial load and small axial load, and has the characteristics of self-aligning.

four row cylindrical roller bearing

The selection of roll bearings should not only be based on the size and structure of the roll, but also consider the load of the bearing. The Load, in particular, is the most important factor in determining bearing life. Calculating the lifespan is more complicated, the easiest way is to consult our engineers, who will provide you with suitable suggestions and options. After selecting the appropriate bearing, the next step is the installation of the roll neck bearing.


Installation of Roll Neck Bearings

During the installation of the multi-row cylindrical roller bearing, in order to maintain a high degree of coaxiality, the inner ring of the bearing is heated in the oil tank to make the inner hole of the inner ring and the roll diameter of the roller to be hot-pressed and assembled. After completion, the final size of the bearing inner ring raceway is ground based on the roll body to improve the radial rotation accuracy.

installation of rolling mill bearing

When installing the four-row tapered roller bearing, first put the whole set of bearings into the bearing seat, and then put the roll neck of the roll into the inner hole of the bearing. Therefore, the roll neck and the inner hole of the bearing can only use clearance fit, and at the same time, oil grooves should be provided on the surface of the inner hole of the bearing, the end face of the inner ring, the surface of the roll neck, and the end face of the axial inner retaining ring.

When installing double-row spherical roller bearings, the matching between the inner hole of the bearing and the shaft adopts a clearance fit.

sealed four-row tapered roller bearing

Properly use and maintain roll bearings

When the working time of the bearing reaches 1/3 of the service life, a comprehensive inspection and cleaning must be carried out, and the internal clearance of the bearing must be checked. When it is greater than twice the original clearance, it should be adjusted; when the bearing outer ring is cleaned, after that, rotate the outer ring of the bearing by 90°, that is, replace the load-bearing area and then assemble it.

For the roll bearing seat, check regularly, if it does not meet the original design requirements, it should be replaced in time.

Strictly implement the maintenance procedures for cleaning bearings.


In general, the design service life of the work roll bearing is 3000~5000h, but in fact it is far from reaching this target value. In order to avoid or reduce the damage of the bearing, some necessary measures should also be taken to improve the service life of the roll bearing: for example, rationally use the bending force, improve the bearing capacity of the roll bearing, and improve the lubrication conditions of the roll bearing, etc.

A Leading Industrial Bearings Supplier

Why Choose FV Bearings?

FV Bearing is a leading supplier of precision bearings and bearings related products across a large spectrum of customers – preimarily OEMs and major distributors.

Leading industrial ball bearings with best materials

Accurate response to client’s request

FV Bearings Co.Ltd has rich experiences in bearings manufacturing and processing, the professional bearing engineers can handle your requirements on bearings exactly and output the accurate bearing products.

World’s leading roller bearings manufacturer

FV Bearings is a leading roller bearings manufacturer provides high quality and durable roller bearings for different industries such as automotive, aerospace, machinery, power plants, chemistry industry, agriculture and other fields.

Solutions for special bearings and high end bearings

If you are looking for special bearings and high end bearings, FV bearings can help you to customize any special bearings according to your needs based on advanced bearings manufacturing technology.

Send us an Email for Quote

sales@fv-bearing.com

Start your project and business
with FV Bearings!

Advanced Industrial Bearing Technology

Latest Bearings News & Knowledge

News and knowledge about ball bearings, roller bearings, special bearings,
deep groove ball bearings, and thrust roller bearings

Selection and Usage of Rolling Mill Bear...

The roll bearing of the rolling mill is very important and is the core component for the normal operation and normal rotation of the roll. The working...

Design Features and Advantages of FV Tap...

​Tapered roller bearings are widely used bearings. According to their structure, they can be divided into: single-row tapered roller bearings, double-...

Classification and Characteristics of Gr...

Soap GreaseCalcium Soap GreaseIn a typical manufacturing process of calcium soap grease, mineral oil, fatty acid, calcium hydroxide (hydrated lime) an...

Get a Quote

Customize Your Bearings
For Your Project

Describe your needs such as bearing type and bearing code, or parameter.

Get a Quote from FV Bearings

Get the latest bearings price lsit from FV bearings. We’ll reply within 48 hrs