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Oil-Lubricated Two-stage Screw Air Compressor

Two-stage compression compared to single-stage compression, the two compression tends to the most provincial power of the isothermal compression,from the principle, the single-stage compression of the two compression energy saving 5~8%. And a two-stage is much closer to isothermal compression. This is achieved by the injection of fresh oil between the stages which reduces the inlet temperature to the second stage. This lower inlet temperature increases efficiency by reducing the compression ratio between the stages. In addition, leakage between the rotor seals is significantly reduced resulting in outstanding volumetric efficiency.
Features of the two-stage air Compressor:
● Self-developed variable speed technology which increases efficiency and offers energy savings.
● SKF Bearing , GHH RAND / Rotor Comp Air End(optional)
●  Enhanced stability and reliability as well as cost-effectiveness.
● Reduce power consumption by around 35% compared to traditional frequency machines.
Our Two Stage Air Compressor employs advanced dual-stage compression technology to elevate air compression to higher pressures. This sophisticated design ensures not only enhanced energy efficiency and reduced energy consumption but also delivers stable airflow outputs for your processes and more consistent outlet temperatures.
Whether in industrial manufacturing, construction, or energy production, our Two-Stage Screw Air Compressor caters to your needs. Offering precise control, efficient energy utilization, and enduring durability, it empowers you to achieve more efficient production and significant energy-saving benefits for your operations.

    Details
    Air-end
    Two-stage compression compared to single-stage compression, the two compression tends to the most provincial power of the isothermal compression,from the principle, the single-stage compression of the two compression energy saving 5~8%.
    Won the award of Level 1 energy Efficiency Grade Certification. Compared with Level 2 Energy Efficiency GradeSave 10%-15% energy. Compared with Level 3 Energy Efficiency GradeSave 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
    Controller
    LCD HD touch monitor, PLC control ,Human menu interface design.
    Can display multi line operation parameters, historical records
    Simple operation,inquiry, convenient maintenance.
    Inverter
    Inverter
    The inverter is the brain of the air compressor, and all operations of the air compressor are processed and regulated through the inverter, ensuring the safe and reliable operation of the air compressor system in all aspects. We typically use inverters from Megmeet, Inovance, and Zoncn, which are internationally renowned brands with stable and reliable quality and guaranteed after-sales service, providing customers with the best possible air compressor user experience.
    Motor
    Motor
    The main motor is an IP55 high-efficiency energy-saving permanent magnet motor carefully selected according to the application of the air compressor. (other IP level available)
    All meet the national energy efficiency standards, F-class insulation, B-class temperature rise, effectively prevent the entry of dust,SKF heavy-duty bearings ensure continuous trouble-free operation for a long time.

    Two-stage PM VSD Screw Air Compressor Technical Parameters

    Model

    SAT-30HP

    SAT-50HP

    SAT-60HP

    SAT-75HP

    SAT-100HP

    SAT-125HP

    SAT-150HP

    Power(KW)

    22

    37

    45

    55

    75

    90

    110

    Horsepower(HP)

    30

    50

    60

    75

    100

    125

    150

    Air Displacement/
    Pressure(m³/min/MPa)

    4.5/0.7

    7.4/0.7

    10.5/0.7

    13.6/0.7

    16.0/0.7

    20.7/0.7

    24.8/0.7

    4.2/0.8

    7.1/0.8

    9.9/0.8

    12.3/0.8

    15.5/0.8

    19.5/0.8

    24.0/0.8

    3.4/1.0

    6.0/1.0

    6.8/1.0

    10.2/1.0

    12.8/1.0

    16.2/1.0

    20.2/1.0

    2.6/1.3

    4.6/1.3

    5.7/1.3

    7.0/1.3

    10.2/1.3

    13.2/1.3

    15.2/1.3

    Air Outlet Size

    DN25

    DN40

    DN50

    DN50

    DN50

    DN65

    DN65

    Noise db(A)

    68±2

    68±2

    72±2

    76±2

    76±2

    76±2

    76±2

    Driven Method

    Direct Driven

    Type

    PM VSD

    Start Method

    Variable Frequency Start

    Length (mm)

    1150

    1280

    1280

    1850

    1850

    2400

    2800

    Width (mm)

    800

    950

    950

    1250

    1250

    1500

    1650

    Height (mm)

    1200

    1350

    1350

    1650

    1650

    1800

    1900

    Weight (kg)

    400

    500

    700

    1000

    1300

    1800

    2300


    Two-stage PM VSD Screw Air Compressor Technical Parameters

    Model

    SAT-175HP

    SAT-220HP

    SAT-250HP

    SAT-275HP

    SAT-300HP

    SAT-350HP

    Power(KW)

    132

    160

    185

    200

    220

    250

    Horsepower(HP)

    175

    220

    250

    275

    300

    350

    Air Displacement/
    Pressure(m³/min/MPa)

    29.0/0.7

    34.0/0.7

    39.0/0.7

    43.2/0.7

    48.5/0.7

    51.8/0.7

    28.0/0.8

    32.5/0.8

    38.0/0.8

    42.0/0.8

    46.2/0.8

    51.0/0.8

    23.2/1.0

    28.0/1.0

    32.0/1.0

    38.1/1.0

    41.2/1.0

    45.8/1.0

    18.8/1.3

    23.2/1.3

    27.7/1.3

    31.9/1.3

    31.6/1.3

    37.2/1.3

    Air Outlet Size

    DN80

    DN80

    DN100

    DN100

    DN100

    DN100

    Noise db(A)

    78±2

    78±2

    78±2

    78±2

    82±2

    84±2

    Driven Method

    Direct driven

    Type

    PM VSD

    Start Method

    Variable Frequency Start

    Length (mm)

    2800

    3000

    3500

    3500

    3900

    3900

    Width (mm)

    1650

    1850

    1950

    1950

    2200

    2200

    Height (mm)

    1900

    2000

    2200

    2200

    2400

    2400

    Weight (kg)

    2600

    3200

    4000

    4300

    5000

    5300


    Q: How to choose air compressor?
    A: When selecting an air compressor, it’s important to consider the specific needs of your site. Factors to consider include the required flow rate, desired pressure, whether an oil-based or oil-free machine is preferred, and the dew point temperature of the compressed air. By taking these factors into account, you can choose an air compressor that meets your specific needs and ensures optimal performance.
    Q: Which payment terms you can accept?
    A: We can accept flexible payment include Bank Transfer, LC, DP, or Combination terms as negotiation.
    Q: Which shipping way can you provide?
    A: We can provide shipping by sea, by air , by express and etc according to customer requirements.
    Q: Can you do OEM and ODM?
    A: Yes, OEM and ODM are both available for us. With the requirements customization of the material, colors, style, the basic quantities will be advised after we discussed together.
    Q: How to place order?
    A: When you are ready to order, please contact us for confirm the suitable solution & plan & model. What cannot be ignored is you should provide a copy purchase order to ensure that your order is processed properly.
    Q: What is the MOQ?
    A: The MOQ, or minimum order quantity, for sample orders is just 1 set. However, for compressors ranging from 7.5-37kw, the minimum quantity is 3-5 sets. For compressors over 55KW, the MOQ is 1-2 sets. It’s important to note that the MOQ can be adjusted based on your specific situation, so be sure to discuss your needs with our team.
    Q: How long will you take to arrange production?
    A: As an experienced air compressor manufacturer, our standard production time is typically between 20-25 days.
    Q: How about your after-sales service?
    A: 1. Provide customers with installation and commissioning online instructions.
    2. Prepare and Well-trained engineers available to overseas service within one year.
    3. Worldwide agents and after service available.
      Senovair boasts a 15,000 ㎡ production base equipped with a specialized testing validation workshop, ensuring stable performance and energy efficiency of every air compressor before delivery.We have also built a full-process production line for air tanks, allowing us to provide a more complete and integrated product portfolio. We are committed to supplying customers with highly competitive products and tailored compressed air system solutions.
      Senovair employs a professional technical team that leads industry innovation.Backed by a complete pre-sales and after-sales service team offering product consultation and reliable technical support,we are dedicated to bringing high-quality air compressors to the global market and advancing green, sustainable development across the industry.
    Q: How to choose air compressor?
    A: When selecting an air compressor, it’s important to consider the specific needs of your site. Factors to consider include the required flow rate, desired pressure, whether an oil-based or oil-free machine is preferred, and the dew point temperature of the compressed air. By taking these factors into account, you can choose an air compressor that meets your specific needs and ensures optimal performance.
    Q: Which payment terms you can accept?
    A: We can accept flexible payment include Bank Transfer, LC, DP, or Combination terms as negotiation.
    Q: Which shipping way can you provide?
    A: We can provide shipping by sea, by air , by express and etc according to customer requirements.
    Q: Can you do OEM and ODM?
    A: Yes, OEM and ODM are both available for us. With the requirements customization of the material, colors, style, the basic quantities will be advised after we discussed together.
    Q: How to place order?
    A: When you are ready to order, please contact us for confirm the suitable solution & plan & model. What cannot be ignored is you should provide a copy purchase order to ensure that your order is processed properly.
    Q: What is the MOQ?
    A: The MOQ, or minimum order quantity, for sample orders is just 1 set. However, for compressors ranging from 7.5-37kw, the minimum quantity is 3-5 sets. For compressors over 55KW, the MOQ is 1-2 sets. It’s important to note that the MOQ can be adjusted based on your specific situation, so be sure to discuss your needs with our team.
    Q: How long will you take to arrange production?
    A: As an experienced air compressor manufacturer, our standard production time is typically between 20-25 days.
    Q: How about your after-sales service?
    A: 1. Provide customers with installation and commissioning online instructions.
    2. Prepare and Well-trained engineers available to overseas service within one year.
    3. Worldwide agents and after service available.
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