Rotary screw air compressor is essential to ranges of industries and facilities thanks to its high work efficiency and long-term reliability. So how to select the right rotary screw air compressor to better develop customers’ business becomes quiet significant. Here is a complete guide to help you choose a right rotary screw air compressor widely.
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What is rotary screw air compressor?
A rotary screw air compressor is a type of positive displacement compressor. It utilizes two meshing helical rotors (screws) to continuously compress air. As the male and female rotors rotate, the air is trapped between them. The gap gradually decreases, and the pressure inside increases. Thus the air is compressed and emitted through this pressure difference. That is it through such compression process to provide a stable and continuous air supply for trucks and semi-trailers.
Why choose a rotary screw air compressor?
- More efficient than piston compressors and other traditional air compressors
- Available for continuous and stable air supply
- Lower long-term maintenance
Where is the rotary screw air compressor used?
Rotary screw air compressors are commonly used in:
- Dry bulk discharging (silo tankers, cement, food powders)
- Construction sites
- Food
- Animal feed
- Chemical
How to choose the right rotary screw air compressor that fits your facility?
Different type, size and speed of rotary screw air compressor will have great influence on your works. Having a detailed understanding of the rotary screw air compressors will help you make the right choice and bring you good returns.
Choose the right rotary screw air compressor type
Whether choosing the oil-free rotary screw air compressors or oil-injected rotary screw air compressors depends on your air purity requirements.
- Oil-free rotary screw air compressors
Oil-free rotary screw air compressor can offer food-grade clean air supply without oil pollution. Therefore, it is the first choice for industries with high requirements for air cleanliness. Using it will be much easier to obtain various quality inspection licenses, such as HACCP, GMP, and ISO 8573 Class 0 certifications. Moreover, oil-free rotary screw air compressors will not emit any oil fumes or wastewater, which is more environmental friendly. Therefore, oil-free rotary screw air compressor has a wide use in food, chemicals, animal feed, and dry bulk industries. However, it is a little expensive and not suitable for budget-conscious users. - Oil-injected rotary screw air compressors
Oil-injected rotary screw air compressor is an economical option for budget-sensitive customers. Because it typically costs only 50%-70% of oil-free rotary screw air compressor price. Although it is more cost-effective, it requires more maintenance and cannot be used in the food and chemical industry.
Choose the right rotary screw air compressor size
Select large rotary screw air compressors or small rotary screw air compressors? It depends on your space requirements.
- Large rotary screw air compressors
If you don’t worry about the working space and require high airflow, then a large rotary screw air compressor is your Mr. right. Large rotary screw air compressor can provide higher airflow and pressure, meeting your continuous heavy-duty application requirements. It is also more efficient under high load conditions in heavy industrial operations. However, it is not convenient to install for its high weight. Furthermore, it will cost one to two times that of a small rotary screw air compressor. - Small rotary screw air compressors
Small rotary screw air compressor is designed with compact structure and easy installation. So users with limited space and light workloads like it very much. Moreover, it is easy to use even in mobile spaces, hence the name “portable rotary screw air compressor.” However, its airflow and heavy-duty performance are inferior to large rotary screw air compressors.
Choose the right rotary screw air compressor drive method
Whether using belt-driven rotary screw air compressors or gear drive rotary screw air compressors? Distinguishing what driven method is more suitable for your operation.
- Belt-driven rotary screw air compressors
Belt-driven screw air compressor is also called economical screw type air compressor. Benefits for its simple structure and low cost, it is popular among small and medium-sized enterprises. And you can adjust the speed via the belt to suit your different business applications. However, you need to maintain regularly the belts because it is easy to aging and loosening. And its efficiency is not as good as that of gear-driven rotary screw air compressors. - Gear-driven rotary screw air compressors
Gear-driven rotary screw air compressor features good stability, wear resistance, and heat resistance. It is right for offers long-term use requiring high reliability. And it transmission efficiency can reach up to 98%. However, it may generate some mechanical noise and it’s more expensive than belt-driven rotary screw air compressors.
Choose the right rotary screw air compressor speed
Whether choosing basic speed rotary screw air compressors or high speed rotary screw air compressors depends on your requirements of working speed and efficiency.
- Basic speed rotary screw air compressors
First, basic-speed rotary screw air compressor has the pros of less rotor wear, less maintenance, and longer service life. Second, basic speed rotary screw air compressor generates less noise, suitable for noise-sensitive industries. Third, basic speed rotary screw air compressor facilitates heat dissipation, reducing the failure rate. However, it cannot meet the needs of high speed operations. - High speed rotary screw air compressors
For industries requires high operational efficiency, the high-speed rotary screw air compressor is the right one. It can help you maximum complete tasks in the shortest time, significantly saving time and labor costs. However, prolonged high-load operation will faster wear of bearings and rotors.
Which kind of rotary screw air compressor is recommended?
In my opinion, the most versatile combination might be an oil-free screw type air compressor. Here, I recommend the XW Mech truck mounted oil-free rotary screw screw air compressor for sale.
XW Mech truck mounted oil-free rotary screw air compressors are favored by dry bulk transport users for their compact structure, light weight, and flexible installation. The oil-free design provides a Class 0 clean and stable air source, suitable for applications requiring high gas purity, such as those in the food, chemical, and feed industries. Morevoer, XW Mech oil-free truck mounted rotary screw air compressors can match to various of packages. XW Mech offers two configurations: Basic-speed and High-speed. The Basic-speed truck mounted oil-free rotary screw air compressor features a simpler structure, intuitive control, and lower costs. It is suitable for trailers with stable loads and frequent unloading. The High-speed truck mounted oil-free rotary screw air compressor can achieve higher airflow and pressure in a smaller size and lighter weight. It is more suitable for users with limited installation space, weight sensitivity, complex operating conditions.
Conclusion
Overall, if you want to choose the right rotary screw air compressor for sale, you should have a good grasp of the information——not only the types and configurations of rotary screw air compressors, but also your operational requirements. Only when your requirements and device configurations match can you find the best rotary screw air compressor solution. Here, XW Mech truck mounted oil-free rotary screw air compressor stands out. It maintain both lightweight design and high efficiency. And it can provide customers with a choice from basic economical models to high-performance lightweight units, making them an excellent solution for upgrading the air supply system of dry bulk vehicles. So if you’re unsure where to start, or feeling overwhelmed by comparisons, you can give XW Mech a try.
