OIL LUBRICATED VS OIL FREE COMPRESSORS
Advantages
Both oil-free and oil-lubricated compressors have unique benefits. Oil-free compressors are an excellent choice when air quality is of utmost importance. They eliminate the risk of oil contamination, have lower maintenance costs, and are environmentally friendly. On the other hand, oil-lubricated compressors are cost-effective upfront and suitable for a wide range of applications across various industries. They offer established and reliable technology with a broad selection of sizes and capacities.
Considerations
When deciding between oil-free and oil-lubricated compressors, factors like the specific needs of your application, budget constraints, and environmental considerations come into play. Making an informed choice ensures that your compressed air aligns perfectly with your operational requirements.
Air Quality Classes for Oil Free Compressors
Compressed air quality is a vital consideration when selecting an air compressor technology. Air Quality Standard ISO 8573-1 serves as the benchmark, evaluating the size and quantity of contaminants, such as oil, dust, and water, in the compressed air. Air quality classes are defined, with most applications favoring Class 2 or lower due to lower oil content. More sensitive industries may opt for Class 1 or the highest standard, Class 0, which provides the best air quality. For reference, here are some recommended air quality classes by industry:
Class 0: Food & Beverage, Pharma, Electronics
Maintenance Costs
Oil-free screw air compressors may have a higher initial cost but lead to lower maintenance expenses. They rely on oil solely for internal lubrication, reducing overall maintenance needs.
Noise Levels
It’s important to note that oil-free screw compressors may produce slightly higher noise levels due to their dry technology. When selecting an oil free air compressor, the compressor’s location within your facility should be considered to mitigate noise-related concerns.
