Why need to Pay Attention to the Lubrication of Rolling Bearing?

Sep 20, 2023

The lubrication of the roll bearings is an important link to ensure the rolling mill's normal operation and extend the roll's service life. Here are some key points for roll-bearing lubrication:

Selection of lubricant

The lubricant for roll bearings should have good anti-wear, anti-oxidation, anti-hydrolysis, high-temperature resistance, and good adhesion and lubricity. Commonly used lubricants include grease, oil, and solid lubricants. For most roll bearings, a suitable grease or oil should be selected for lubrication to ensure durability and reliability.

Determination of lubrication method

The appropriate lubrication method should be selected according to the actual situation of the rolling mill and the use requirements of the roll bearings. Commonly used lubrication methods include:

Continuous lubrication: The roller bearings are continuously lubricated by continuously supplying oil or grease to the roller bearings.

Intermittent lubrication: Supply oil or grease to the roller bearings regularly to supplement lubricant consumption.

Spray lubrication: Spray lubricant in a mist form onto the roll bearings to achieve uniform lubrication.

Drip lubrication: drip lubricant onto the roller bearings in drop form to maintain good lubrication.

Grease grooves and holes can be added according to the user's requirement, and below is the grease grooves for industrial cylindrical roller bearing.

Design of lubrication system

For large and high-speed rolling mills, special lubrication systems should be designed to meet the lubrication needs of the roll bearings. The lubrication system should include the following components:

Oil tank: stores lubricant and provides stable pressure.

Oil pump: draws lubricant from the oil tank and delivers it to the roller bearings.

Oil line: The pipeline system delivers lubricant to various rolling mill parts.

Filter: Filters impurities in the oil circuit to ensure the purity of the lubricant.

Pressure regulating valve: Regulate the pressure of lubricant to adapt to the use needs of different roll bearings.

Sensor: Monitors lubricant temperature, pressure, flow, and other parameters to detect abnormalities and make adjustments in time.

Safety protection device: prevent lubricant from leaking or polluting the environment to ensure the safety of operators.

Key points for use and maintenance

Regularly check the quality and quantity of lubricant, and replenish or replace lubricant in time.

Regularly check various lubrication system components, including oil tanks, pumps, oil lines, filters, etc., to ensure their normal operation.

Adjust the lubricant pressure and flow to suit the use needs of the roll bearings.

Clean the roll bearings and related parts regularly to remove accumulated impurities and old lubricants.

Keep good records, including lubricant replacement time, usage amount, quality, and other information for future reference and analysis.

Strengthen training and education to improve operators' attention to roll bearing lubrication and operational level.

For high-speed rolling mills or rolling mills under special working conditions, higher-level lubricants or special lubrication technology should be used to ensure the roll bearings' normal operation and service life.

In short, the lubrication of roll bearings is a complex and important task, and factors such as its operating conditions, performance requirements, and usage environment must be fully considered. Only by selecting appropriate lubricants and lubrication methods and establishing a complete lubrication system can the normal operation of the rolling mill be ensured and the service life of the roll bearings be extended.

The lubrication of steel mill bearings is very important for bearings. In actual cases, many customers' bearing problems are closely related to the bearings lubrication. When you don't know how to choose the lubrication method for bearings, you can consult us at FV Bearings. Our engineers will provide professional solutions for you. Of course, suppose there is a problem with your bearing. In that case, our engineers can also analyze the possible reasons for you so that customers can avoid some wrong methods in subsequent use so that the bearing can achieve the best use effect and longer service life.