down image

A Complete Guide to Selecting the Perfect Rotary Screw Air Compressor

If you run a factory, workshop, or another kind of industrial facility, then you know how crucial a reliable compressed air system is to keep your operations running smoothly. Rotary screw air compressors are the workhorses that power many manufacturing operations.

But how do you know if the rotary screw compressor is the right one for you? This guide will walk you through Rotary Screw Compressor operations, the benefits of these Compressors, and lastly, the six key factors to consider when selecting an air compressor for your facility.

What is a Rotary Screw Air Compressor?

Rotary screw air compressors Come in different sizes, ranging from 5 to 230 Horsepower and are mainly for heavy-duty usage in factories, plants and other industrial facilities.

They are one of the simple industrial air compressors to maintain due to a built-in cooling system requiring little service. These air compressors work using two rotating screws inside the unit. The screws rotate in opposition to one another, and the inflowing air becomes compressed due to the movement and limited space between the rotors. Rotary screw compressors can efficiently deliver high volumes of compressed air on an ongoing basis, which makes them suitable for applications requiring a constant flow of dry compressed air.

What are the Benefits of Rotary Screw Compressors?

Several advantages make rotary screw compressors a top choice for industrial settings:

High airflow - This compressor delivers more cubic feet per minute (CFM) per horsepower than piston compressors.

Continuous duty - This heavy-duty air compressor runs 24/7 with a 100% duty cycle.

Long lifespan - Will last 6-8 times longer than piston compressors before needing a rebuild.

Low maintenance - The best thing is that it requires less frequent service than other types.

Quiet operation - Top-quality rotary screw compressors operate at lower noise levels compared to piston compressors.

Energy Efficient - They run at lower internal temperatures for reduced energy consumption.

Smaller footprint - These air compressors occupy less floor space than piston compressors.

What are the Main Components of a Rotary Screw Air Compressor?

The main parts of a rotary screw air compressor include:

Air inlet - Where air enters the compressor

Rotary screws - Two helical screws that compress the air

Compression chamber - Housing that contains the screws

Bearings - Allow smooth rotation of the screws

Cooling system - Removes heat generated during compression

Motor and Control System - The motor powers the rotation of the rotors, and the control system controls the motor and monitors the system's operation

Air filters - Remove particulates from the inlet air

Pressure regulator - Controls compressor output pressure

What are the Key Considerations for Choosing a Rotary Screw Air Compressor?

Air demand - Choose a compressor sized for your maximum expected air usage with a bit of extra capacity. Rotary screw compressors are efficient even at smaller sizes.

Type of usage - Consider your operation's duty cycle and usage patterns. Is the air demand constant or fluctuating? Rotary screws excel at constant 24/7 runtimes, but variable speed options can match varying loads.

Operating conditions - Account for the environment and where the compressor will run. Extreme cold or heat impacts performance, and outdoor units require enclosures.

Air quality - Consider what level of air purity your equipment needs. General shop tools can tolerate some moisture and particles in the air supply. However, more sensitive pneumatic machinery like CNC equipment may require dry-filtered air to prevent contamination and corrosion. Know your air quality needs before selecting a compressor.

Noise level - Rotary screw air compressors have lower dB levels compared to piston compressors and are vibration free, which makes them the optimal choice for applications that require low noise levels. 

Budget - Consider upfront costs versus long-term TCO(Total Cost of Ownership). 

Although rotary screw Air compressors do have a higher upfront cost, the benefits that come with the compressor save you money over time!

Choosing the Best Brand for Your Needs

Partnering with MasterAire can ensure that you receive the right rotary screw compressor system for your facility. Our team will assess your usage, conditions, and budget to configure the perfect air compressor solution.

We have high-performing rotary screw air compressors available in 5 HP, 7.5 HP, 10 HP, 20 HP, 30 HP,40 HP, 50 HP, 60 HP, 75 HP, 100 HP, 125 HP, 150 HP, 175 HP, 220 HP and 250 HP. Explore our products now.

Rely on our experienced and knowledgeable team to help you choose the Rotary screw air compressor that will best fit your business needs.