The small rotary screw air compressor is a compact, energy-efficient air supply device built with twin screw rotors as the core compression component. All small rotary screw compressor units integrate a screw host, energy-saving motor, cooling system, air storage tank, and post-processing dryer/filter into one integrated machine. The whole unit adopts intelligent PLC control, automatically adjusting the rotating speed according to air consumption to cut idle power waste. Compared with piston air compressors of equal air volume, screw models reduce energy consumption by 20% to 30%. Mobile portable versions add heavy-duty rubber wheels, traction hooks and shock-absorbing brackets, making them suitable for off-grid outdoor environments without fixed factory installation. Standard supporting accessories include air dryers, precision filters and air tanks, which can be matched freely based on users’ air purity requirements. Whether small processing workshops, construction teams, or maintenance service merchants, this series of portable screw compressors is the preferred air power equipment. If you are interested, please contact YG immediately for more information.
Portable Screw Compressor Parameter
| Model | Rated FAD | Rated Pressure | Engine | Air end | Weight |
| S60T | 18m3/min | 18bar | 162KW YUCHAI | Single Stage | 3000KG |
| S85D/T | 24m3/min | 22bar | 162KW YUCHAI | Two Stage | 3560KG |
| S95CD/T | 29m3/min | 24bar | 162KW YUCHAI | Two Stage | 4700KG |
| S100D/T | 31m3/min | 25bar | 162KW YUCHAI | Two Stage | 5600KG |
| S125D | 36m3/min | 30bar | 162KW YUCHAI | Two Stage | 5600KG |
Full Working Flow of Small Rotary Screw Compressor
1. Air Intake Filtration
At the start of operation, the negative pressure formed by rotating screw rotors draws external ambient air into the machine. Air first passes through a multi-layer air intake filter, which blocks dust, sand, leaves, and tiny debris in the air. This step prevents hard particles from scratching the precision screw rotor, extending the service life of the core host by more than twice. For outdoor mobile compressor models for sale, the filter adopts a thicker, waterproof, dustproof shell to adapt to dusty construction sites.
2. Primary Mixing & Compression
Filtered clean air enters the sealed compression chamber between the male and female screw rotors. As the two rotors rotate and mesh with each other, the volume of the air cavity shrinks continuously. At the same time, cooling lubricating oil is sprayed into the cavity, mixing fully with air to absorb compression heat and form an oil-gas mixture. The oil also forms a sealing film between rotor gaps to avoid air leakage and improve compression efficiency.
3. Oil-Gas Separation
The high-pressure oil-gas mixture discharged from the screw host flows into the built-in oil-gas separation tank. Under centrifugal force and ultra-fine filter separation, more than 99% of the lubricating oil is separated from the compressed air and sinks to the bottom of the tank. The recovered oil is pumped back to the screw rotor for cyclic cooling and lubrication, greatly reducing oil consumption and operation costs.
4. Secondary Cooling
After separation, high-temperature compressed air and circulating lubricating oil are separately sent to the air cooling radiator and oil cooling radiator. The large-flow axial fan automatically adjusts its rotating speed based on temperature, dissipating heat quickly to lower the air temperature from over 100℃ to below 40℃, avoiding high-temperature damage to follow-up pipelines and equipment.
5. Post-Processing Purification
Cooled compressed air flows out of the main unit and enters optional supporting equipment: refrigerated air dryers remove water vapor from the air, while precision filters filter residual oil mist and fine dust. After purification, the compressed air reaches industrial standard clean dry air, free of water and oil, to protect downstream pneumatic tools and processing equipment.
6. Intelligent Pressure Circulation & Air Supply
Purified compressed air is stored in the integrated air tank for a stable output. The PLC control system monitors pipeline pressure in real time: when pressure hits the upper limit, the compressor reduces speed or idles to save power; when pressure drops to the lower limit, the machine automatically accelerates to resume compression. The stable air pressure is continuously delivered to all pneumatic equipment through air pipelines to complete the full work cycle.
7 Application Scenarios of Portable Screw Compressor
1. Small Machinery Processing Workshops
Small metal fabrication, woodworking, and plastic processing factories are the largest user groups of the small rotary screw air compressor. These factories need stable compressed air to drive pneumatic grinders, punching machines, spray guns, and clamping fixtures. Fixed cabinet-type small screw compressors can be placed independently in the workshop corner, occupying less than 3 square meters of space. The constant air pressure avoids unstable processing size caused by fluctuating air supply, and the low noise design (62- 72 dB) meets indoor workshop environmental standards. Many small factories choose this model to replace bulky, high-failure piston compressors, cutting monthly maintenance time by over 70%.
2. Road & Municipal Construction Sites
A wheeled mobile compressor for sale is essential equipment for outdoor construction teams. Road repair, pipeline laying, and municipal renovation sites frequently move work zones, and the portable screw compressor with traction wheels can be towed by small trucks or manpower. It provides power for air picks, road surface chipping machines, sandblasting equipment, and concrete cutting tools. The fully sealed, dustproof, and rainproof casing adapts to muddy, dusty open-air environments, and the independent fuel tank or grid power dual design supports construction in remote areas without an industrial electricity supply.
3. Car & Equipment Repair Shops
Auto repair, engineering machinery maintenance, and ship repair stores widely adopt portable screw compressors. Mechanics use compressed air for tire inflation, pneumatic wrenches, sandblasting rust removal, and surface paint spraying. The compact mobile design allows staff to push the machine beside vehicles or equipment without laying a long pipeline. The matched drying filter produces oil-free dry air, preventing water and oil from corroding car paint and metal parts during spraying and rust cleaning, greatly improving the finished quality.
4. Agricultural & Greenhouse Operations
Large farms, fruit packaging plants, and agricultural greenhouses rely on the small rotary screw compressor. Compressed air drives fruit sorting pneumatic push rods, greenhouse ventilation control valves, agricultural pesticide sprayers, and grain drying equipment. Mobile screw models can be moved between different greenhouses and processing areas at will. The energy-saving variable frequency function reduces power consumption during intermittent agricultural work, helping farmers lower daily operating electricity costs.
5. Interior Decoration & Advertising Production
Decoration teams and signboard factories need portable air power for wall sanding, paint spraying, carving machine air-assisted systems, and metal character welding auxiliary equipment. Lightweight portable screw compressor with small air tanks is easy to carry up stairs for high-rise indoor construction. Low-vibration operation avoids wall shaking during fine decoration work, and stable air pressure ensures uniform spray paint without sagging or uneven color, improving construction efficiency and finished effect.
6. Mining & Small Tunneling Projects
Small mine exploration and small tunnel excavation teams select heavy-duty mobile screw compressors from our mobile compressor for sale range. The explosion-proof optional version meets underground mining safety standards, supplying air for rock drilling machines and ventilation auxiliary equipment. The strong cooling system runs stably under high underground temperatures, and the wear-resistant screw rotor reduces shutdown maintenance frequency, shortening project construction cycles.
YG Small Rotary Screw Air Compressor-Factory Direct Sales
The small rotary screw air compressor has replaced traditional piston air compressors in most small and medium air demand industries with advantages of energy saving, stable air supply, low noise, and flexible mobility. Its complete six-stage compression workflow guarantees continuous, clean, dry compressed air output, while diversified application scenarios cover indoor fixed production and all kinds of outdoor mobile operation demands.
Whether you run a small processing factory, construction engineering team, auto repair shop, or agricultural processing plant, the small rotary screw compressor series has customized fixed and mobile models to match your air volume, power, and mobility requirements. Our complete machine supports one-stop matching of dryers, filters and air storage tanks, with intelligent control systems to reduce long-term energy and maintenance costs.
If you are looking for cost-effective, reliable portable air power equipment, inquire about the YG mobile compressor for sale and our full range of small rotary screw air compressor models. YG Machinery’s professional technical team will recommend the most suitable portable screw compressor solution according to your daily air consumption, working environment, and long-term production plans.
