How Much Compressed Air Does an Oil-Air Lubrication System Consume?
Release time:
2022-07-27
Compressed air is an essential part of an oil-air lubrication system. It transports lubricant through pipelines, helps form a stable oil-air mixture, and provides cooling and sealing protection for lubrication points.
The compressed air supply pressure required for an oil-air lubrication system is generally 0.4–0.6 MPa. The actual air consumption depends on several factors, including:
- Air pressure and flow rate
- Bearing size
- Sealing condition
- Number of lubrication points
- Pipeline length and system design
Under normal operating conditions, the compressed air consumption for each lubrication point is approximately 1.5 Nm³/h.
Different Applications Require Different Air Consumption
The air consumption varies depending on the lubrication method:
Air Used Mainly for Lubricant Transportation
When compressed air is mainly used to transport lubricant through the pipeline, the required air volume is relatively low.
The airflow carries lubricant gradually to the lubrication point, ensuring continuous and stable lubrication.
Air Used for Direct Lubricant Spraying
When compressed air is also used to spray lubricant directly onto components such as gears or other exposed surfaces, the air consumption will increase.
This is because a higher airflow rate is required to achieve sufficient spray coverage and lubrication performance.
Proper Air Supply Improves Lubrication Efficiency
A correctly designed compressed air system helps oil-air lubrication achieve:
- Stable oil-air flow
- Precise lubricant delivery
- Effective cooling performance
- Positive pressure sealing
- Reduced lubricant consumption
For heavy-duty equipment in steel mills and metallurgical applications, selecting the proper compressed air supply is essential for maintaining reliable lubrication performance and extending equipment service life.
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