How Effective Is Oil-Air Lubrication? Why 1.5 ml/h Can Be Enough-Yantai Huashun

How Effective Is Oil-Air Lubrication? Why 1.5 ml/h Can Be Enough

Release time:

2026-01-03

A common question from customers is:
Can an oil consumption of just 1.5 ml/h really meet equipment lubrication requirements?
To answer this, it is essential to understand the fundamental principle of lubrication.

The core purpose of lubrication is to create a protective oil film between two surfaces in relative motion. This oil film separates the contact surfaces, reduces friction, and prevents wear. For rolling bearings, the key factor is not the total oil volume, but whether a stable and continuous oil film can be formed between the rolling elements and raceways.Once the oil film is properly established, effective lubrication is achieved—regardless of whether the oil supply is large or small.

In an oil air lubrication system, an oil supply of approximately 1.5 ml/h is sufficient to form and maintain this essential oil film under typical operating conditions. Beyond “supplying oil on demand,” oil-air lubrication offers several key advantages:

High efficiency and energy savings: Oil is delivered precisely as needed, avoiding both over-lubrication (which causes waste and increased mechanical resistance) and under-lubrication (which leads to oil film breakdown and wear). This significantly reduces lubricant consumption and operating costs.
Clean and environmentally friendly operation: Minimal and accurate oil delivery reduces oil leakage and contamination of equipment and the working environment.
Extended equipment service life: A stable oil film effectively lowers friction and wear, reducing failure rates and prolonging the life of bearings and other critical components.
Easy automation and control: Oil-air lubrication systems support automated operation, remote monitoring, and precise adjustment, reducing maintenance workload and labor costs.

It should be noted that 1.5 ml/h is a reference value, not a fixed standard. In actual applications, the oil supply must be adjusted according to bearing size, rotational speed, load, operating temperature, and other working conditions to ensure stable and reliable lubrication performance.

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