Oil-injected Screw Air Compressor
The Oil-injected Screw Air Compressor Manufacturer!
Shanghai Sollant Energy Saving Technology Co., Ltd. is a compressed air system manufacturer integrating R&D, production, sales, and service.
Why choose us
Quality Assurance
Sollant operates advanced production facilities and holds multiple international certifications such as iso9001 and ce, ensuring top-quality products that meet rigorous industry standards.
Good Service
Our professional manufacturing processes and dedicated r&d team allow us to deliver high-performance air compressors with fast lead times and reliable supply.
Fast Delivery
Sollant provides exceptional after-sales support with a skilled service team ready to assist customers worldwide.
Sales Market
Our main markets are in Europe and North America, which together account for over 70% of our total sales. We have established reliable distributor partnerships in key countries including the United States, Spain, Romania, Mexico, Iran, Saudi Arabia, Kenya, South Africa, Pakistan, Malaysia, Turkey, Australia, Ecuador, Russia, Kazakhstan, Uzbekistan, and more.

High Efficiency: Oil-injected compressors are designed for continuous and reliable operation. Their efficiency is particularly beneficial in heavy-duty industries where air demands are high and continuous.
Longer Lifespan: The oil lubrication reduces wear and tear, prolonging the life of the compressor and minimizing the need for frequent maintenance.
Energy Savings: These compressors often have lower energy consumption compared to other types, as the oil injection reduces internal friction and makes the operation smoother.
Reliability in Harsh Environments: The oil-injection helps these compressors maintain stable performance, even in demanding industrial conditions like high temperatures or heavy usage.
Step-by-step breakdown of the oil-injected screw compressor process
Air Intake
Ambient air is drawn into the compressor's inlet valve.
Oil Injection
As the air enters the compression chamber, oil is injected to reduce friction, cool the air, and create a better seal between the rotors.
Compression
Two helical rotors—male and female—rotate in opposite directions, trapping and compressing the air-oil mixture as it moves down the chamber.
Separation
The compressed air-oil mixture passes through a separator system, typically consisting of mechanical and coalescing elements, which remove nearly all of the oil.
Cooling and Filtration
The separated oil is cooled and filtered before being recirculated, while the compressed air may pass through aftercoolers or dryers depending on the system design.
Delivery
Clean, compressed air is delivered to the end-use application at a stable pressure.
Oil-Injected Screw Air Compressor Applications
Manufacturing
In the manufacturing industry, oil-injected screw air compressors are primarily used in machining, painting, sandblasting, pneumatic hammers, pneumatic drills, pneumatic cutting, sheet metal processing, and pneumatic screwdrivers. Their stability and efficiency improve production efficiency and reduce costs, leading to their widespread use in the manufacturing sector.
Construction
In construction, oil-injected screw air compressors are primarily used in applications such as concrete spraying, ceiling spraying, and interior and exterior wall spraying. Their efficiency and reliability improve construction efficiency and quality, leading to their widespread adoption in the construction industry.
Medical Equipment
In medical equipment, oil-injected screw air compressors are primarily used in oxygen concentrators, oxygen generators, and ventilators. Their high efficiency and low noise levels improve equipment stability and safety, leading to their widespread use in the medical sector.
Food Processing
In food processing, oil-injected screw air compressors are primarily used in bread and biscuit production, canned and bottled food production, and ceiling spraying. Because they are oil-free and pollution-free, ensuring food quality and hygienic safety, they are widely used in the food processing industry.
Compressed air demand: The volume and pressure requirements of your application.
Energy efficiency: Choosing a model with advanced energy-saving features can reduce operational costs.
Size and footprint: Depending on your available space, compact models like ELGi’s industrial screw type air compressors can be a great solution.
Maintenance and serviceability: Opting for compressors with easy-to-access components can simplify maintenance.
Oil separation efficiency: Lower oil carryover ensures cleaner compressed air and reduces filter replacement costs.

Oil-injected Screw Air Compressor packaging process
Screw air compressor packaging is divided into three layers from inside to outside:
- The first layer of protection: spray paint on the surface of the machine to protect the surface of the machine. The fouling pull film is wrapped around the surface of the machine to protect the surface of the paint.
- The second layer of protection: anti-collision protection of the machine. On the basis of lacquer protection, anti-collision buffer cotton is used to protect the machine against collision.
- The third layer of protection: the case adopts the overall packaging of the non-fumigation wooden case to protect the machine during transportation.
















