Exploring the Key Features of Oil-Free Piston Compressors

oil free piston compressor manufacturers

The quality of compressed air depends on its purity. Exposure to oil makes it more expensive to maintain clean air. Many businesses use oil-less air or oil free piston compressors to allay this worry. Similar to an oil-injected compressor, an oil-free air compressor is lubricated without the use of oil.

Oil free compressors are becoming more popular nowadays because they are affordable, don’t harm the environment, and work reliably. In this blog, we will tell you the key features of oil free piston compressors, industrial compressor manufacturers and. We will tell you, Warning Signs That Your Car Air Compressor Is Failing.


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How do Oil Free Air Compressors operate?

These compressors either use different materials to protect the mechanism without the need for lubrication, or they have no mechanical contact inside the compression chamber. To keep the mechanism operating smoothly, the majority of oil-free compressors use other materials like water or a Teflon coating.


Proper sealing keeps any oil from contaminating the compressed air because bearings and gears are all lubricated externally to the compression chamber. A 100% oil-free air supply is the end result. Certain oil free piston compressor manufacturers’ oil-free designs have gone so far as to remove metal-to-metal contact in the compression chamber. Thereby doing away with the requirement for synthetic and oil-based lubrication entirely.


These advantages for purity and the environment can frequently be translated into additional savings, which could lower your total cost of ownership. If you’re thinking about moving to an oil-free model, here are some things to take into account:


  •         Condensate that is heavy in oil doesn’t need to be collected or disposed of.
  •         Since downstream filters do not filter oil, their replacement needs are lower.
  •         Because there is no need to apply more force filtration can cause a downstream. Pressure drop in some fluid-flooded units energy costs are kept to a minimum.
  •         lower oil expenses because you don’t have to keep filling up your compressor.
  •         When unloaded, these units will typically consume about 18% of their maximum load horsepower and can unload in two seconds when given the command.

Operational Procedures for Oil-Less Air Compressors

The best way to understand how oil-free air compressors operate and why they endure as long as they do is to go over each function step by step. Let’s take a look at how an oil-less air compressor operates and gives you the necessary compressed air.


Drawing in Air

To make sure the air is clean, oil-free air compressors begin by drawing in outside. air through their unloader valve and put it through an inlet air filter (or filters). The filter will prevent harm to the internal parts of your compressor. Usually, these filters are fine enough to exclude tiny particles of debris, dust, and dirt.


In order to help the compressor pump air into its chamber and put it in the “loaded” position, the unloader valve opens. The compressor starts operating in the “unloaded” state when the valve closes. Usually, your compressor will run out of air to draw in while it is actively delivering compressed air.


The low-pressure compressor element is where the air goes first when your compressor turns on and begins to draw air through an open unloader valve.


Initial Compressor Part

It’s likely that you’ve noticed that your air compressor produces heat. This is typically caused by the low-pressure compressor element, which operates without oil. The unit can run at a temperature of up to 180 degrees just by compressing air, and the typical compressor element will operate at about 2.5 bar. 


Because there isn’t a flowing medium to dissipate heat. that temperature can be more than twice as high as what oil-lubricated compressors can reach. The air will be compressed by oil-free elements, which will then pass it through your compressor to cool it down so you can use it in your applications.


Access to Intercoolers

The air is first compressed and then allowed to cool in an intercooler before being compressed again by pistons. This step will either advance it to the second compression phase or the final one, depending on your particular compressor.


Heat produced during compression lowers the air’s oxygen content and lowers its density. When the air compressor is operating in conjunction with a combustion engine, cooling the air essentially serves as a straightforward way to enable denser and more oxygen-rich air to be utilized by the engine once more. This increases fuel supply and boosts power output.


There are two reasons intercoolers are necessary. To reduce the possibility of any heat-related damage, they first cool the air to the appropriate temperature. Second, two-stage pumps with intercoolers can compress air at significantly higher PSIs. Which reduces wear in the second stage through the cooling process.


There may be some condensation from cooling air, and intercoolers typically have built-in filters to take moisture. And water out of the air. This filter is usually identify as a moisture trap.



Oil-free air compressors are a more deliberate option that needs to be carefully considered for your business. If you are looking for industrial compressor manufacturers then you should visit our website. We are one the best compressor manufacturers and suppliers.