Oil-Air Lubrication for Roughing Mill Bearings-Huashun Lubrication

Oil-Air Lubrication for Roughing Mill Bearings

Release time:

2021-10-20

The roughing mill is one of the most heavily loaded sections of a hot rolling line. During operation, the rolling stands apply high forces to reduce the thickness of steel slabs or billets before they enter the subsequent rolling processes.

The bearings supporting the rolls operate under heavy loads, impact forces, vibration, water and high temperatures. Reliable lubrication is therefore essential for maintaining stable rolling performance.

Working Conditions of Roughing Mill Bearings

Roughing mill bearings can experience demanding operating conditions, including:

Heavy rolling loads;
High impact forces;
High rotational torque;
Cooling water and steam;
High ambient temperatures;
Iron oxide scale and dust;
Continuous or frequent operating cycles.

Under these conditions, insufficient lubrication can increase friction and wear, while excessive lubricant may cause unnecessary consumption and heat accumulation.

Water and scale contamination can also reduce lubricant performance and accelerate bearing damage.

Why Use Oil-Air Lubrication?

An oil-air lubrication system supplies a controlled quantity of oil to the required bearing positions with the assistance of compressed air.

The lubricant is accurately metered before being transported through the pipeline to the lubrication points. This allows the system to provide a more consistent lubricant supply than irregular manual lubrication.

Oil-air lubrication can help:

Deliver the required quantity of oil;
Maintain a continuous supply of fresh lubricant;
Reduce excessive lubricant accumulation;
Support bearing cooling;
Reduce the influence of water and dust contamination;
Lower manual lubrication requirements;
Centralize lubrication management.

For suitable high-speed or continuously operating bearings, controlled oil delivery can also help reduce lubrication-related heat and wear.

Customized Roughing Mill Lubrication

The lubrication requirements of different roughing mills are not identical. Huashun designs the system according to the actual equipment and operating conditions.

Important design parameters include:

Bearing type and size;
Roll speed;
Rolling load;
Operating temperature;
Cooling water conditions;
Lubricant viscosity;
Number of lubrication points;
Pipeline distance;
Required monitoring functions.

A complete system may include an oil-air main station, pumps, distributors, pipelines, sensors, PLC control and alarm functions.

Supporting Rolling Mill Reliability

Lubrication is an important part of roughing mill equipment maintenance. A properly designed oil-air lubrication system can help maintain stable bearing lubrication, reduce lubricant waste and support reliable operation under heavy rolling conditions.

Huashun provides customized centralized lubrication engineering for metallurgical equipment, from system design and manufacturing to testing, installation and commissioning.

Huashun — Intelligent Centralized Lubrication Expert.

Oil-Air Lubrication for Wire Rod Mill Pinch Roll and Laying Head Bearings

Oil-Air Lubrication for Intermediate Mill Bearings

Working Conditions of Roughing Mill Bearings

Why Use Oil-Air Lubrication?

Customized Roughing Mill Lubrication

Supporting Rolling Mill Reliability

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