As pointed out above, the main reason oil is injected is lubrication and cooling of the engine. With an oil free machine, cooling is achieved through various methods, including water and fans. In addition, hot friction is avoided with an intercooler. After the air is compressed, it is further treated to keep temperatures low.
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Since no lubricant is present, oil free machines tend to have a shorter lifespan than oil injected air compressors. Additionally, oil free compressors are louder to operate. The tradeoff here is they require less maintenance in the form of checking oil. There's also no need for oil filters and separation.
The type of air compressor you choose will come down to your business's needs, applications, and environmental impact concerns. Again, if you work in food, medical, paper production, or anything else requiring ultra clean air, then an oil free machine is likely required. It ensures no impact on your end customers.
As mentioned throughout this article, the only way to achieve Class 0 is with an oil free air compressor. You may come across "technically oil free" machines, but this term shouldn't be used interchangeably. In some cases, an oil injected air compressor might be advertised as "technically oil free" with the right filters. This does not mean it's capable of meeting ISO -1 Class 0 requirements.
In addition to investing in an oil free machine, you'll want the right filters and dryers. If working with the sensitive industries mentioned, you'll likely need a desiccant or adsorption dryer. These are capable of achieving the lowest possible pressure dew point (PDP) for the driest possible air. As described in the intro, it's important to dry and treat compressed air water vapor as much as possible.
While this article focuses on oil free compressors, it's important to stress that both oil injected and oil free machines offer advantages. If you don't work in a sensitive application, an oil injected machine might make the most sense. This is due to its quieter operations and longer lifespan.
It's important to consider your unique needs and what makes the most sense for you. With an oil injected machine, ISO -1 Class 1 is possible through the use of filters, dryers, and other air treatment solutions. This is acceptable for a lot of jobs.
With the information presented in this article, you still might need support in choosing what's right for your facility. Our team is here to help.
Compressed air for any business is an investment. If youre looking for cleaner applications in your industry, you may be interested in an oil-free air compressor. While its not contaminant free, it is more suitable to use in the food, beverage, or medical industries.
Below are some of the concepts you should understand before you set out to buy a new oil-free air compressor. When you become an educated consumer, you can save time and money while buying a compressor that will best suit your needs.
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An oil-free air compressor is a significant investment. Its always a good idea to understand your business needs for this type of air compressor, and exactly what types of demand youll be experiencing. Itll be helpful to understand what types of tools that youll want to use, so that you know what kind of power that youll need.
If you know the maximum level of air pressure that youll need at peak use, that will give you an idea of how powerful of a unit that youll need as well. Understanding all of your potential uses gives you better insight into the type of machine that you will be in the market for. It makes you a smarter consumer.
Chances are youre not out shopping for air compressors or learning every last detail about yours, day in and day out. You have a business to run. But when youre in the market for an oil-free air compressor there is some jargon, or industry-related terms that you should familiarize yourself with. It will help you to be sure that you find the compressor thats right for you.
An understanding of these technical terms can help you to understand what type of oil-free compressor might work best for your organization. But there are far more terms than these common ones. When the compressor repair man, or sales rep starts talking in words that you dont understand, dont be afraid to stop him, and ask him to explain.
The Class 0 air that your oil-free compressor will be using is the highest standard of oil-free air thats available, but it isnt quite contaminant free. This is an important distinction for companies in the food, beverage, or medical industries. There are still many contaminants in atmospheric air that include water vapor, microorganisms, and water aerosols. The compressor itself, storage devices, and the piping can all lead to other contaminants. Filtration systems can help you to remove remaining contaminants from your compressed air.
Each industry and application requires a tailored solution that meets the demands of the job. For instance, the best oil-free air compressor for breweries may not be the best compressor for auto body shops, and vice versa.
When an oil-free air compressor is used for continuous tools, like sanders or grinders for example, a larger air tank will be needed. The simple reason is that it requires a larger amount of air than intermittent usage, from a tool like a nail gun. Our general recommendation would be to find the largest tank that you think you can afford, and that you know youll use.
When an air compressors motor is working hard to continuously fill up the tank, theres more wear and tear on the machine. If the tank is too small, you run a higher chance that the compressed air will be used before its fully cooled and that can cause a condensation build up in the air lines. This can have a damaging effect on the tools and the compressor.
The horsepower dictates the quality of the motor. As we established before, its the motors job to fill up your compressor tank. While it wont necessarily impact tool performance, a higher horsepower will fill the air tank more efficiently and this can have a significant impact on the longevity of your compressor.
The bottom line is shopping for an oil-free compressor is complex. There are a lot of factors to consider. Make sure that you ask a lot of questions and find an air compressor sales company that can explain the complexities to you in a way that you can understand. If you have any questions, feel free to contact our friendly experts today!
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