Screw Compressor Guide: Working, Brands & Prices in UAE

Compressed air plays a vital role in modern industries, powering everything from manufacturing equipment to construction tools. Among the different types of compressors, the screw compressor stands out for its efficiency, durability, and ability to deliver a continuous flow of air. Known for supporting both small workshops and large-scale industrial operations, screw compressors are trusted worldwide.

In this guide, we’ll explain what a screw compressor is, how it works, its main parts, and essential maintenance tips. We’ll also highlight leading brands in the UAE and provide insights on pricing, so you can make informed decisions when choosing the right compressor for your needs.

What is a Screw Compressor?

A screw compressor, also known as a rotary screw compressor, is a type of gas compressor that uses two rotating screws (called rotors) to compress air or gas. Unlike piston-based compressors that use up-and-down motion, screw compressors use continuous rotary motion, making them smoother and more efficient.

They’re widely used in industries that need a constant supply of compressed air, such as manufacturing, oil and gas, refrigeration, and even hospitals. You’ll find them in large setups as industrial screw air compressors and in smaller, portable versions like a mini screw compressor.

Screw Compressor Parts and Functions

Like any machine, a screw compressor is made up of several components working together. Here are the main parts of a screw compressor and their roles:

1. Air End (Screw Element):
   This is the heart of the machine where the air compression happens. It contains the male and female rotors that trap and compress the air.
   
   

2. Motor:
   Powers the rotors, ensuring smooth and continuous operation. Depending on the model, it can be electric, diesel, or even gas-powered (diesel screw compressor, gas screw compressor).
   
   

3. Inlet Valve:
   Controls the amount of air entering the compressor.
   
   

4. Oil Filter and Separator:
   Removes impurities and separates the oil from compressed air. Without clean oil, the machine won’t run efficiently.
   
   

5. Cooler:
   Keeps the temperature under control, since compression generates heat.
   
   

6. Control System:
   Monitors performance and allows adjustments. Modern systems, like those in Ingersoll Rand screw air compressors or Kaeser screw compressors, even have smart digital controls.

Screw Compressor Maintenance

Regular maintenance is the secret to extending the life of your compressor. Thankfully, screw compressors are easier to maintain compared to piston compressors, but you still need to keep an eye on them. Here’s how:

• Check and change oil regularly: Screw compressors use special screw compressor oil to lubricate and cool the rotors. Dirty oil reduces efficiency.
  
  

• Inspect filters: Replace air and oil filters on time to avoid blockages.
  
  

• Monitor for leaks: Small leaks can lead to big efficiency losses.
  
  

• Clean the cooler: A dusty or clogged cooler makes the system run hotter.
  
  

• Schedule professional servicing: Brands like Hitachi screw compressors, Frick screw compressors, and Howden screw compressors recommend annual checks by certified technicians.

Screw Compressor Working Principle

The working principle of a screw compressor is simple yet highly effective. Air enters the unit through the inlet valve and moves into the air end, where two rotors one male and one female rotate in opposite directions. As these rotors turn, the air becomes trapped in the cavities between them, and with every rotation, the space gets smaller, forcing the air to compress. Once the air reaches the desired pressure, it is released through the outlet, cooled, and made ready for use. This continuous process ensures a steady flow of compressed air with minimal pulsation, which is why industries often prefer screw compressors over piston-based models.

Best Screw Compressor Brand in the UAE

The UAE market is filled with choices, but a few brands consistently rise above the rest thanks to their quality, efficiency, and reliable after-sales support. Here are some of the leading names trusted across industries:

Boss – Boss Screw compressor  is steadily gaining recognition in the UAE market for its balance of affordability and performance. Their compressors are compact, user-friendly, and designed to deliver strong results for small to mid-sized businesses.

Ingersoll Rand – The Ingersoll Rand Screw compressor is known for its long-lasting performance and advanced technology. Their models are designed to handle heavy-duty industrial tasks while keeping energy costs under control.

Kaeser – Kaeser Screw compressor  is popular for its energy efficiency and low operating noise. These compressors are ideal for businesses that want reliable performance without high maintenance demands.

Howden – Howden Screw compressor specializes in large-scale applications and heavy industries. Their compressors are built to deliver maximum reliability in tough conditions, making them a strong choice for oil, gas, and manufacturing sectors.

Hitachi – Hitachi Screw compressor offers dependable solutions for both small workshops and large industrial facilities. Their designs balance reliability, durability, and modern technology, making them versatile for many applications.

How to Change Oil in a Screw Compressor

Changing the oil is one of the most important maintenance tasks. Here’s a quick step-by-step guide:

1. Turn off the compressor and allow it to cool.

2. Locate the drain plug and empty the old oil into a container.

3. Replace the oil filter if needed.

4. Add fresh screw compressor oil through the fill port.

5. Run the compressor for a few minutes, then check the oil level again.
   
   

Tip: Always use the oil recommended by the manufacturer for better screw compressor efficiency and longer life.

Screw Compressor Price in the UAE

The cost of a screw compressor in the UAE depends on its size, type, and brand. Here’s a quick price overview:

Prices vary across manufacturers such as Ingersoll Rand, Kaeser, Hitachi, and Boss, as well as local suppliers. Always compare efficiency, warranty, and service availability before making a purchase.

Conclusion

Screw compressors remain a reliable choice for industries needing continuous, efficient, and durable air supply. With their advanced design, they outperform piston-based models in both performance and maintenance. From compact workshop units to large industrial systems, they offer versatile solutions for different applications. Choosing the right brand and maintaining it properly ensures long-term efficiency and value.

FAQs

1. What is a rotary screw compressor?
 A rotary screw compressor is simply another name for a screw compressor. Instead of using pistons, it compresses air through two rotating screws, which makes it more efficient and reliable for continuous use.

2. What is the difference between a screw compressor and a reciprocating compressor?
 Screw compressors provide a steady, continuous airflow and operate more quietly. Reciprocating compressors, on the other hand, use pistons, create more noise, and usually require higher maintenance.

3. What is the difference between a rotary compressor and a screw compressor?
 A rotary compressor is a general category that includes several designs, such as vane, scroll, and screw types. A screw compressor is one specific type within this group, designed for high efficiency and durability.

4. Why is it called a screw compressor?
 It gets its name from the two interlocking screw-shaped rotors inside the unit. These rotors trap and compress air as they rotate, producing a smooth flow of compressed air.

5. What is the efficiency of a screw compressor?
 Modern screw compressors are highly efficient, often saving 20–30% more energy than piston compressors. Their continuous operation also makes them ideal for industries where downtime is costly.

6. Which is better, a scroll or a screw compressor?
 Scroll compressors are well-suited for small-scale applications like air conditioning. Screw compressors are better for industrial use since they can handle larger volumes of air more efficiently.

7. What are the main parts of a screw compressor?
 Key parts include the air end (rotors), motor, oil filter, separator, cooler, and control system. Each component plays a role in ensuring smooth and efficient compression.

8. What is a two-stage screw compressor?
 A two-stage screw compressor compresses air in two steps instead of one. This allows it to achieve higher pressures while maintaining better energy efficiency and reduced heat output.

9. What is a diesel screw compressor used for?
 Diesel screw compressors are portable and powered by diesel engines. They are commonly used on construction sites or remote locations where electricity isn’t available.

10. Who are the top screw compressor manufacturers?
Some well-known names include Ingersoll Rand, Kaeser, Hitachi, McQuay, and Howden. These manufacturers are trusted for their durability, efficiency, and service support.