Oil-Air Lubrication for Intermediate Mill Bearings-Huashun Lubrication

Oil-Air Lubrication for Intermediate Mill Bearings

Release time:

2021-10-13

Intermediate rolling mills play an important role between roughing and finishing processes. Their rolls operate at considerable speed while continuously processing steel material.

The bearings supporting these rolls require stable lubrication to reduce friction, control operating temperature and maintain reliable rolling performance.

Lubrication Challenges in Intermediate Mills

Compared with many general industrial machines, intermediate mill bearings operate in a particularly demanding environment.

Typical conditions include:

Continuous rotation;
High mechanical loads;
Increasing roll speed;
Cooling water;
High ambient temperature;
Scale and dust;
Vibration and mechanical impact.

Both insufficient and excessive lubrication can create problems. An insufficient lubricant supply may increase friction and bearing wear, while excessive lubricant can result in unnecessary consumption and heat generation.

How Oil-Air Lubrication Supports the Bearings

Oil-air lubrication uses a small and controlled amount of oil combined with compressed air.

The oil is metered according to the lubrication requirements and transported to the bearing through a centralized pipeline system.

This approach provides several potential benefits:

Precise Lubricant Delivery

Each lubrication point can receive a controlled quantity of oil according to its operating requirements.

Continuous Fresh Lubricant

A continuous or scheduled supply helps maintain a stable lubrication condition around the bearing.

Supporting Cooling

Compressed air can provide a supporting cooling effect, which can be useful for bearings operating at elevated temperatures.

Contamination Protection

Depending on the bearing housing and sealing arrangement, positive pressure can help reduce the entry of water, dust and scale.

Centralized Management

Multiple lubrication points can be supplied and monitored from a centralized lubrication station.

Huashun Oil-Air System Design

Huashun designs oil-air lubrication systems based on the actual structure and working conditions of the rolling mill.

The engineering process can include:

Equipment Analysis → Lubrication Point Identification → Oil-Air System Design → Component Selection → Manufacturing → Testing → Installation → Commissioning

The system may integrate pumps, oil-air distributors, pipelines, pressure monitoring, oil-level monitoring, PLC control and alarm functions.

Improving Intermediate Mill Reliability

Stable bearing lubrication can contribute to lower friction, controlled operating temperature and reduced lubrication-related wear.

For metallurgical rolling equipment, the objective is not simply to supply more lubricant. The key is to provide the right lubricant, at the right quantity, at the right time and at the right lubrication point.

Huashun develops customized oil-air lubrication solutions for steel mills and other heavy industrial applications.

Huashun — Precision Lubrication for Demanding Metallurgical Equipment.

Oil-Air Lubrication for Roughing Mill Bearings

Oil-Air Lubrication for Finishing Mill Bearings