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Oil-Lubricated Two-Stage Screw Air Compressor from China Suppliers and Factory: Energy-Efficient Air Compression Solutions
Air-end
⭐ Level 1 Energy Efficiency Certified
Two-stage compression compared to single-stage compression tends to the most energy-saving isothermal compression. From the principle, two-stage compression saves 5–8% more energy than single-stage compression.
Compared with Level 2 Energy Efficiency Grade — saves 10%–15% energy.
Compared with Level 3 Energy Efficiency Grade — saves 20%–30% energy.
Compared with Level 2 Energy Efficiency Grade — saves 10%–15% energy.
Compared with Level 3 Energy Efficiency Grade — saves 20%–30% energy.
- Adopt two-stage independent compression
- The pressure ratio is equal over both stages as well as having a lower compression speed, which helps improve volumetric efficiency
- Oil mist spray cooling is used between the stages to make the entire compression process close to isothermal compression and improve the compression insulation efficiency
- The two-stage rotors are directly driven by the bevel gear respectively, and the compression transmission efficiency is high
- The large diameter and low speed of the rotors reduce stress on the bearings, thus lengthening their life span as well as any other components
Controller
LCD HD touch monitor, PLC control, Human menu interface design.
- Can display multi-line operation parameters and historical records
- Simple operation and inquiry for convenient maintenance
Inverter
The inverter is the brain of the air compressor. All operations are processed and regulated through the inverter, ensuring safe and reliable operation in all aspects.
We typically use inverters from Megmeet, Inovance, and Zoncn — internationally renowned brands with stable and reliable quality and guaranteed after-sales service, providing customers with the best possible air compressor user experience.
Motor
IP55 High-Efficiency Permanent Magnet Motor
- Carefully selected IP55 high-efficiency energy-saving permanent magnet motor (other IP levels available)
- All meet national energy efficiency standards
- F-class insulation, B-class temperature rise — effectively prevents dust ingress
- SKF heavy-duty bearings ensure continuous trouble-free operation over a long period
Frequently Asked Questions
QWhat is the main advantage of two-stage compression over single-stage compression?
Two-stage compression is significantly more energy-efficient. It approaches isothermal compression, saving 5–8% more energy than single-stage compression. Machines with Level 1 Energy Efficiency Certification can save 20–30% energy compared to Level 3 rated units.
QWhat type of controller does the air compressor use?
The air compressor features an LCD HD touch monitor with PLC control and a human-friendly menu interface. It can display multiple lines of operation parameters and historical records, making operation and maintenance simple and convenient.
QWhich inverter brands are used in the air compressor?
We use inverters from internationally recognized brands including Megmeet, Inovance, and Zoncn. These brands are known for stable and reliable quality, with guaranteed after-sales service to ensure the best user experience.
QWhat is the IP rating of the motor, and can it be customized?
The standard motor is rated IP55, providing strong protection against dust and water ingress. Other IP rating levels are also available upon request to suit specific operating environments.
QHow does oil mist spray cooling benefit the compression process?
Oil mist spray cooling is applied between the two compression stages, bringing the entire compression process close to isothermal compression. This significantly improves compression insulation efficiency and reduces energy consumption.
QWhat bearing type is used in the motor, and how does it affect reliability?
The motor uses SKF heavy-duty bearings, which are globally recognized for their durability and precision. These bearings ensure continuous, trouble-free operation over extended periods, reducing maintenance needs and downtime.
