Oil-free compressor

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کمپرسور بدون روغن | راهنمای خرید کمپرسور | کمسان ایران

Oil-free compressor

These types of compressors are used for low-volume applications that require oil-free air. Due to the use of a special aluminum alloy in the air block, there is no corrosion or wear in these compressors, resulting in a long service life. However, the use of these compressors is not recommended in acidic, alkaline, chemical, or highly humid environments with humidity levels above 50%.
کمپرسور بدون روغن | راهنمای خرید | کمسان ایران

Technical Data
Single stage compressor – max. 110 psig (7.5 barg )
Weight of minimal version lbs (kg)Stroke mm (“)Number and dia. of cylinders mm (“)Recommended motor HP (kw)Power required at shaft**Compressor speed r.p.mCapacity F.A.D* at 90 psig (6 barg ) cfm ( 1/min)Piston Displacement cfm (1/min)MODEL
109 (49)50 (2″)3*85 ( 3 3/8 “)5.5 (4)5.2 (3.80)106017.0 (480)30.0 (850)D 51.2
122 (55)80 (3″)3*85 ( 3 3/8 “)10.0 (7.5)9.8 (7.40)106032.0 (915)48.0 (1360)D 81.2***
Technical Data
Single stage compressor – max. 110 psig (7.5 barg )
Weight of minimal version lbs (kg)Stroke mm (“)Number and dia. of cylinders mm (“)Recommended motor HP (kw)Power required at shaft**Compressor speed r.p.mCapacity F.A.D* at 90 psig (6 barg ) cfm ( 1/min)Piston Displacement cfm (1/min)MODEL
116 (52)50 (2″)3*85 ( 3 3/8 “)
1*45 (1 3/4 “)
5.5 (4)5.2 (3.80)106012.0 (340)19.0 (545)D 52.4

Oil-Free Compressor: A Revolutionary Advancement in Compressed Air Supply

The oil-free compressor is one of the most innovative pieces of equipment in the field of compressed air supply. By eliminating the need for internal lubrication, it has brought about a major transformation across various industries. Due to its ability to produce completely clean air, this type of compressor has found a vital role in sensitive sectors such as medical, pharmaceutical, food, and electronics industries.

What is an Oil-Free Compressor?

As the name suggests, an oil-free model does not use any oil inside the compression chamber for air compression. This feature ensures that the output air is free from any oil particles or contaminants. This is particularly important for industries that require clean and hygienic air.

Unlike conventional compressors that use oil to reduce friction and cool components, oil-free compressors use specialized designs and heat-resistant, friction-resistant materials to eliminate this need—while still offering reliable and stable performance.

How Does an Oil-Free Compressor Work?

The working principle is similar to other types of compressors: it draws in ambient air and compresses it by increasing the pressure. The main difference lies in how internal components are lubricated.

In this type of compressor, materials like wear-resistant alloys, Teflon, ceramics, or special coatings are used to allow the moving parts to operate without oil. Additionally, a precisely engineered cooling system keeps the machine’s temperature within a safe range.

Why Is an Oil-Free Compressor a Better Choice?

There are several reasons why oil-free compressors have become a popular choice across many industries:

Clean and Hygienic Air

The most significant advantage is the production of clean air. Oil-free compressors guarantee 100% oil-free compressed air.

In pharmaceutical, medical, food production, and electronics manufacturing, even the smallest trace of oil in compressed air can lead to product contamination and irreparable damage.

Reduced Maintenance Costs

By eliminating the need for oil changes, oil filters, and costs associated with oil leakage or system contamination, maintenance expenses are significantly reduced.

Environmentally Friendly

These compressors prevent oil emissions into the environment and minimize ecological pollution, making them ideal for settings with strict environmental regulations.

Easier Installation and Operation

The absence of complex lubrication and oil collection systems makes installation and setup faster and easier.

Applications Across Various Industries

Due to their ability to deliver clean compressed air, oil-free compressors are used in diverse sectors. The most notable applications include:

Medical and Dental Industry

In operating rooms and dental clinics, clean and sterile air is crucial. Oil-free compressors provide the required air pressure without contaminating medical equipment.

Pharmaceutical Industry

During drug production, exposure to contaminated air can alter chemical properties. Oil-free compressors ensure that products are manufactured under completely hygienic conditions.

Food Industry

For packaging, transporting, cooking, or drying food items, clean air is essential. Oil-free compressors maintain food safety by leaving no oil residue or particles behind.

Electronics Manufacturing

Clean compressed air is critical in the production of electronic components such as chipsets and sensitive boards, preventing damage caused by oily particles.

Laboratories and Chemical Industries

In laboratory environments where precision and controlled air quality are vital, using oil-free compressors enhances the accuracy of tests and the correct operation of instruments.

Types of Oil-Free Compressors

Oil-free compressors are available in various models and capacities. Depending on the user’s needs, one of the following types may be selected:

  • Piston Compressor:
    Suitable for light and intermittent use, such as in dental offices or small workshops.

  • Scroll Compressor:
    Operates quietly and without vibration, ideal for hospital environments or sensitive laboratories.

  • Oil-Free Screw Compressor:
    Designed for heavy and continuous industrial applications. This model uses a rotary screw design that provides quiet yet powerful operation.

Key Factors in Selecting a Compressor

To make the right purchase, consider the following key factors:

  • Compressed Air Demand: Ensure the compressor’s capacity matches your actual business needs.

  • Required Working Pressure: The produced air pressure must be compatible with your equipment.

  • Noise Level: For enclosed or employee-adjacent spaces, opt for low-noise models.

  • Installation Space: Choose a compressor that fits your physical installation space.

  • Power Supply Type: Some models are single-phase, others are three-phase. Check your site’s electrical infrastructure before purchasing.

Maintenance and After-Sales Service

Although oil-free compressors require less frequent servicing, attention should still be given to the following:

  • Regular inspection of air filters

  • Ensuring the cooling system is functioning properly

  • Checking for leaks or unusual noises

  • Annual professional servicing by certified providers

Having reliable after-sales support, technical assistance, and access to spare parts is another crucial factor when selecting a compressor brand.