Oil-free VS Oil-injected Screw Air Compressor

What is the difference between an oil-free and oil-lubricated air compressor?

• The difference is the oil content in compressed air.
• For the Class 0 oil-free air compressor, we use water as the lubricating medium instead of oil(Water-injected oil-free single-screw air compressor) or use no lubricating medium(Dry oil-free double twin-screw air compressor), so there will be no oil at all. Find the comparison between water-injected type and dry type oil-free screw air compressor.
• For the Oil-lubricated screw air compressor, we use oil as the lubricating medium, so the compressed air will contain oil. But which can be reduced down to 0.003 microns by filters.

Then, Should I go with a Class 0 oil-free air compressor or the oil-lubricated air compressor?

What you need to do is to assess your facility’s requirements.

• If your plant can’t tolerate any oil in contact with the product, choose a Class 0 oil-free air compressor is a must. Such as pharmaceutical, food & beverage, hospital, critical electronics, and other industries. To ensure that there is no chance of contamination by oil.
• But, if there is no need for 100% oil-free, the majority of manufacturing, industrial or small workshops use oil-lubricated compressors. Although there is oil in compressed air, they use filters to reduce the oil content. Because it will be more economical.