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Oil-free air compressor, as the name implies, is an air compressor that does not require the addition or generation of lubricating oil during the compression process. Its working principle is mainly based on the following aspects:

​The principle of centrifugal air compressor is to compress gas by centrifugal force.

Oil-free scroll air compressor is a special air compressor that uses the scroll compressor refrigeration principle to compress gas.

When people think about nitrogen and oxygen, they usually imagine gas cylinders used in hospitals, laboratories, or industrial sites. However, an interesting fact is that the nitrogen and oxygen we use every day are already surrounding us — they are the main components of the air we breathe. So, how can industrial equipment produce high-purity nitrogen or oxygen from ordinary air? The answer lies in advanced air separation technology.

In industrial production, compressed air is often referred to as the "second energy source" after electricity, widely used in pneumatic tools, material conveying, instrumentation control, spraying, and many other applications. The equipment providing this core power—the screw air compressor—directly affects production efficiency and operating costs through its performance and reliability. The Ingersoll Rand RM series oil-flooded screw air compressors are designed as a systematic solution to meet these demands. Their core value is built upon three dimensions: high energy efficiency, reliable stability, and productivity optimization.

In recent years, as industrial gas costs continue to fluctuate, more and more manufacturing plants, laboratories and medical facilities are switching from traditional cylinder supply to on‑site gas generation. Nitrogen and oxygen generators, especially those based on PSA (pressure swing adsorption) and membrane separation technologies, have become invisible but essential pillars of production lines.